{"id":35716,"date":"2025-05-06T17:14:44","date_gmt":"2025-05-06T09:14:44","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/35716.html"},"modified":"2025-05-06T17:14:44","modified_gmt":"2025-05-06T09:14:44","slug":"%e6%95%b0%e6%8d%ae%e7%bb%93%e6%9e%84%e5%b0%8f%e6%89%ab%e5%b0%be-%e6%a0%88","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/35716.html","title":{"rendered":"\u6570\u636e\u7ed3\u6784\u5c0f\u626b\u5c3e\u2014\u2014\u6808"},"content":{"rendered":"<h2>\u6570\u636e\u7ed3\u6784\u5c0f\u626b\u5c3e\u2014\u2014\u6808<\/h2>\n<p>&#064;jarringslee<\/p>\n<\/p>\n<h4>\u6587\u7ae0\u76ee\u5f55<\/h4>\n<ul>\n<li>\u6570\u636e\u7ed3\u6784\u5c0f\u626b\u5c3e\u2014\u2014\u6808<\/li>\n<li>\n<ul>\n<li>\u6808\u672c\u8d28\u4e0a\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u7ebf\u6027\u8868\u3002<\/li>\n<li>\n<ul>\n<li>&#xff08;\u4e00&#xff09;\u7ebf\u6027\u8868\u7684\u5b9a\u4e49<\/li>\n<li>&#xff08;\u4e8c&#xff09;\u7ebf\u6027\u8868\u7684\u8fd0\u7b97<\/li>\n<\/ul>\n<\/li>\n<li>\u4ec0\u4e48\u662f\u6808\u3002<\/li>\n<li>\n<ul>\n<li>&#xff08;\u4e00&#xff09;\u6808\u7684\u5b9a\u4e49<\/li>\n<li>&#xff08;\u4e8c&#xff09;\u6808\u7684\u5206\u7c7b<\/li>\n<li>&#xff08;\u4e09&#xff09;\u6808\u7684\u5b58\u50a8\u7ed3\u6784<\/li>\n<li>&#xff08;\u56db&#xff09;\u6808\u7684\u793a\u4f8b<\/li>\n<\/ul>\n<\/li>\n<li>\u4e8c\u3001\u6808\u7684\u5b9e\u73b0<\/li>\n<li>\n<ul>\n<li>&#xff08;\u4e00&#xff09;\u987a\u5e8f\u6808\u7684\u5b9e\u73b0<\/li>\n<li>&#xff08;\u4e8c&#xff09;\u94fe\u6808\u7684\u5b9e\u73b0<\/li>\n<\/ul>\n<\/li>\n<li>\u6808\u7684\u5e94\u7528<\/li>\n<li>\n<ul>\n<li>&#xff08;\u4e00&#xff09;\u62ec\u53f7\u5339\u914d<\/li>\n<li>&#xff08;\u4e8c&#xff09;\u4e2d\u7f00\u8868\u8fbe\u5f0f\u8f6c\u540e\u7f00\u8868\u8fbe\u5f0f<\/li>\n<\/ul>\n<\/li>\n<li>\u4f8b\u9898<\/li>\n<li>\n<ul>\n<li>[20. \u6709\u6548\u7684\u62ec\u53f7 &#8211; \u529b\u6263&#xff08;LeetCode&#xff09;](https:\/\/leetcode.cn\/problems\/valid-parentheses\/)<\/li>\n<li>[150. \u9006\u6ce2\u5170\u8868\u8fbe\u5f0f\u6c42\u503c &#8211; \u529b\u6263&#xff08;LeetCode&#xff09;](https:\/\/leetcode.cn\/problems\/evaluate-reverse-polish-notation\/)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p> \u200b <\/p>\n<p>\u200b \u6808stack\u4f5c\u4e3a\u4e00\u79cd\u91cd\u8981\u7684\u6570\u636e\u7ed3\u6784&#xff0c;\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\u6709\u7740\u5e7f\u6cdb\u7684\u5e94\u7528&#xff0c;\u5982\u51fd\u6570\u8c03\u7528\u3001\u8868\u8fbe\u5f0f\u6c42\u503c\u7b49\u3002<\/p>\n<p>\u200b<\/p>\n<h3>\u6808\u672c\u8d28\u4e0a\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u7ebf\u6027\u8868\u3002<\/h3>\n<h4>&#xff08;\u4e00&#xff09;\u7ebf\u6027\u8868\u7684\u5b9a\u4e49<\/h4>\n<p>\u7ebf\u6027\u8868\u662f\u4e00\u79cd\u6700\u57fa\u7840\u7684\u6570\u636e\u7ed3\u6784&#xff0c;\u5b83\u7531\u5177\u6709\u76f8\u540c\u7279\u6027\u7684\u6570\u636e\u5143\u7d20\u6784\u6210&#xff0c;\u8fd9\u4e9b\u6570\u636e\u5143\u7d20\u4e4b\u95f4\u5b58\u5728\u7740\u7ebf\u6027\u5173\u7cfb&#xff0c;\u5373\u7b2c\u4e00\u4e2a\u5143\u7d20\u79f0\u4e3a\u8868\u5934&#xff0c;\u6700\u540e\u4e00\u4e2a\u5143\u7d20\u79f0\u4e3a\u8868\u5c3e&#xff0c;\u9664\u7b2c\u4e00\u4e2a\u5143\u7d20\u5916&#xff0c;\u6bcf\u4e2a\u5143\u7d20\u6709\u4e14\u53ea\u6709\u4e00\u4e2a\u524d\u9a71&#xff0c;\u9664\u6700\u540e\u4e00\u4e2a\u5143\u7d20\u5916&#xff0c;\u6bcf\u4e2a\u5143\u7d20\u6709\u4e14\u53ea\u6709\u4e00\u4e2a\u540e\u7ee7\u3002\u7ebf\u6027\u8868\u53ef\u4ee5\u987a\u5e8f\u5b58\u50a8&#xff0c;\u4e5f\u53ef\u4ee5\u94fe\u5f0f\u5b58\u50a8\u3002<\/p>\n<h4>&#xff08;\u4e8c&#xff09;\u7ebf\u6027\u8868\u7684\u8fd0\u7b97<\/h4>\n<p>1. **\u63d2\u5165** &#xff1a;\u5728\u8868\u4e2d\u6307\u5b9a\u4f4d\u7f6e\u63d2\u5165\u4e00\u4e2a\u5143\u7d20\u3002<br \/>\n2. **\u5220\u9664** &#xff1a;\u5220\u9664\u8868\u4e2d\u6307\u5b9a\u4f4d\u7f6e\u7684\u5143\u7d20\u3002<br \/>\n3. **\u67e5\u627e** &#xff1a;\u67e5\u627e\u8868\u4e2d\u6ee1\u8db3\u7279\u5b9a\u6761\u4ef6\u7684\u5143\u7d20\u3002<\/p>\n<h3>\u4ec0\u4e48\u662f\u6808\u3002<\/h3>\n<h4>&#xff08;\u4e00&#xff09;\u6808\u7684\u5b9a\u4e49<\/h4>\n<p>\u6808\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u7ebf\u6027\u8868&#xff0c;\u5b83\u6ee1\u8db3\u540e\u8fdb\u5148\u51fa\u7684\u7279\u6027&#xff0c;\u5373\u6700\u540e\u88ab\u63d2\u5165\u7684\u5143\u7d20\u6700\u5148\u88ab\u5220\u9664\u3002\u6808\u7684\u63d2\u5165\u548c\u5220\u9664\u64cd\u4f5c\u90fd\u53ea\u80fd\u5728\u6808\u9876\u8fdb\u884c\u3002<\/p>\n<p>\u5c31\u50cf\u4e00\u4e2a\u6876\u3002\u6211\u4eec\u628a\u4e1c\u897f\u6309\u987a\u5e8f\u653e\u8fdb\u53bb&#xff0c;\u6700\u540e\u4e00\u4e2a\u5c31\u653e\u5728\u4e86\u6876\u7684\u6700\u9876\u7aef\u3002\u6211\u4eec\u9700\u8981\u62ff\u51fa\u6765\u7684\u65f6\u5019&#xff0c;\u5148\u62ff\u51fa\u6765\u6700\u540e\u653e\u8fdb\u53bb\u7684&#xff0c;\u6700\u540e\u62ff\u51fa\u6765\u7b2c\u4e00\u4e2a\u653e\u8fdb\u53bb\u7684\u3002\u8d77\u5230\u4e86\u4e00\u4e2a\u9006\u5e8f\u7684\u8fc7\u7a0b\u3002<\/p>\n<h4>&#xff08;\u4e8c&#xff09;\u6808\u7684\u5206\u7c7b<\/h4>\n<ul>\n<li>\u987a\u5e8f\u6808 &#xff1a;\u4f7f\u7528\u6570\u7ec4\u5b9e\u73b0\u7684\u6808&#xff0c;\u5143\u7d20\u5728\u6570\u7ec4\u4e2d\u8fde\u7eed\u5b58\u50a8\u3002<\/li>\n<li>\u94fe\u6808 &#xff1a;\u4f7f\u7528\u94fe\u8868\u5b9e\u73b0\u7684\u6808&#xff0c;\u5143\u7d20\u901a\u8fc7\u6307\u9488\u94fe\u63a5\u5728\u4e00\u8d77\u3002<\/li>\n<\/ul>\n<h4>&#xff08;\u4e09&#xff09;\u6808\u7684\u5b58\u50a8\u7ed3\u6784<\/h4>\n<p>\u6808\u901a\u5e38\u4f7f\u7528\u987a\u5e8f\u6808\u548c\u94fe\u6808\u6765\u5b58\u50a8\u3002\u987a\u5e8f\u6808\u7684\u5b58\u50a8\u7ed3\u6784\u5982\u4e0b&#xff1a;<\/p>\n<p><span class=\"token keyword\">typedef<\/span> <span class=\"token keyword\">int<\/span> DataType<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">typedef<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">Stack<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    DataType<span class=\"token operator\">*<\/span> a<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/\u5b58\u653e\u6808\u5143\u7d20\u7684\u6570\u7ec4<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> top<span class=\"token punctuation\">;<\/span>     <span class=\"token comment\">\/\/\u6808\u9876\u6307\u9488<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> capacity<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/\u6808\u7684\u6700\u5927\u5bb9\u91cf<\/span><br \/>\n<span class=\"token punctuation\">}<\/span> Stack<span class=\"token punctuation\">;<\/span><\/p>\n<p>\u94fe\u6808\u7684\u5b58\u50a8\u7ed3\u6784\u5982\u4e0b&#xff1a;<\/p>\n<p><span class=\"token keyword\">typedef<\/span> <span class=\"token keyword\">int<\/span> DataType<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">typedef<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">Node<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    DataType data<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">Node<\/span><span class=\"token operator\">*<\/span> next<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span> Node<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">typedef<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">LinkStack<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    Node<span class=\"token operator\">*<\/span> top<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/\u6808\u9876\u6307\u9488<\/span><br \/>\n<span class=\"token punctuation\">}<\/span> LinkStack<span class=\"token punctuation\">;<\/span><\/p>\n<h4>&#xff08;\u56db&#xff09;\u6808\u7684\u793a\u4f8b<\/h4>\n<p>\u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u987a\u5e8f\u6808 [1, 2, 3, 4, 5]&#xff0c;\u5176\u4e2d 5 \u662f\u6808\u9876\u5143\u7d20\u3002\u5f53\u63d2\u5165\u5143\u7d20 6 \u65f6&#xff0c;\u6808\u53d8\u4e3a [1, 2, 3, 4, 5, 6]\u3002\u5f53\u5220\u9664\u5143\u7d20\u65f6&#xff0c;\u6808\u53d8\u4e3a [1, 2, 3, 4, 5]\u3002<\/p>\n<h3>\u4e8c\u3001\u6808\u7684\u5b9e\u73b0<\/h3>\n<h4>&#xff08;\u4e00&#xff09;\u987a\u5e8f\u6808\u7684\u5b9e\u73b0<\/h4>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;stdlib.h&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;stdio.h&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;assert.h&gt;<\/span><\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u5b9a\u4e49\u6808\u4e2d\u5b58\u50a8\u7684\u6570\u636e\u7c7b\u578b\u4e3a\u6574\u578b<\/span><br \/>\n<span class=\"token keyword\">typedef<\/span> <span class=\"token keyword\">int<\/span> DataType<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u5b9a\u4e49\u987a\u5e8f\u6808\u7684\u7ed3\u6784\u4f53&#xff0c;\u5305\u542b\u5b58\u50a8\u5143\u7d20\u7684\u6570\u7ec4\u3001\u6808\u9876\u6307\u9488\u548c\u6808\u7684\u6700\u5927\u5bb9\u91cf<\/span><br \/>\n<span class=\"token keyword\">typedef<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">Stack<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    DataType<span class=\"token operator\">*<\/span> a<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5b58\u653e\u6808\u5143\u7d20\u7684\u6570\u7ec4<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> top<span class=\"token punctuation\">;<\/span>     <span class=\"token comment\">\/\/ \u6808\u9876\u6307\u9488&#xff0c;\u521d\u59cb\u503c\u4e3a -1 \u8868\u793a\u6808\u4e3a\u7a7a<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> capacity<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u6808\u7684\u6700\u5927\u5bb9\u91cf<\/span><br \/>\n<span class=\"token punctuation\">}<\/span> Stack<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u6808\u7684\u521d\u59cb\u5316\u51fd\u6570<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">StackInit<\/span><span class=\"token punctuation\">(<\/span>Stack<span class=\"token operator\">*<\/span> pstack<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">assert<\/span><span class=\"token punctuation\">(<\/span>pstack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u65ad\u8a00\u786e\u4fdd\u4f20\u5165\u7684\u6307\u9488\u975e\u7a7a<\/span><br \/>\n    pstack<span class=\"token operator\">-&gt;<\/span>a <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span>DataType<span class=\"token operator\">*<\/span><span class=\"token punctuation\">)<\/span><span class=\"token function\">malloc<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">sizeof<\/span><span class=\"token punctuation\">(<\/span>DataType<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">*<\/span> <span class=\"token number\">4<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5206\u914d\u521d\u59cb\u5927\u5c0f\u4e3a 4 \u7684\u52a8\u6001\u6570\u7ec4<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>pstack<span class=\"token operator\">-&gt;<\/span>a <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token comment\">\/\/ \u5224\u65ad\u5185\u5b58\u5206\u914d\u662f\u5426\u6210\u529f<\/span><br \/>\n        <span class=\"token function\">perror<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;malloc fail&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u82e5\u5206\u914d\u5931\u8d25&#xff0c;\u8f93\u51fa\u9519\u8bef\u4fe1\u606f<\/span><br \/>\n        <span class=\"token keyword\">return<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    pstack<span class=\"token operator\">-&gt;<\/span>top <span class=\"token operator\">&#061;<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u6808\u9876\u6307\u9488\u521d\u59cb\u5316\u4e3a -1<\/span><br \/>\n    pstack<span class=\"token operator\">-&gt;<\/span>capacity <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">4<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u6808\u7684\u521d\u59cb\u5bb9\u91cf\u8bbe\u4e3a 4<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u6808\u7684\u9500\u6bc1\u51fd\u6570<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">StackDestroy<\/span><span class=\"token punctuation\">(<\/span>Stack<span class=\"token operator\">*<\/span> pstack<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">assert<\/span><span class=\"token punctuation\">(<\/span>pstack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u65ad\u8a00\u786e\u4fdd\u4f20\u5165\u7684\u6307\u9488\u975e\u7a7a<\/span><br \/>\n    <span class=\"token function\">free<\/span><span class=\"token punctuation\">(<\/span>pstack<span class=\"token operator\">-&gt;<\/span>a<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u91ca\u653e\u52a8\u6001\u5206\u914d\u7684\u6570\u7ec4\u5185\u5b58<\/span><br \/>\n    pstack<span class=\"token operator\">-&gt;<\/span>a <span class=\"token operator\">&#061;<\/span> <span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5c06\u6570\u7ec4\u6307\u9488\u7f6e\u4e3a\u7a7a&#xff0c;\u907f\u514d\u91ce\u6307\u9488<\/span><br \/>\n    pstack<span class=\"token operator\">-&gt;<\/span>top <span class=\"token operator\">&#061;<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u6808\u9876\u6307\u9488\u91cd\u7f6e\u4e3a -1<\/span><br \/>\n    pstack<span class=\"token operator\">-&gt;<\/span>capacity <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u6808\u7684\u5bb9\u91cf\u91cd\u7f6e\u4e3a 0<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u6808\u7684\u63d2\u5165&#xff08;\u538b\u6808&#xff09;\u64cd\u4f5c<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">StackPush<\/span><span class=\"token punctuation\">(<\/span>Stack<span class=\"token operator\">*<\/span> pstack<span class=\"token punctuation\">,<\/span> DataType x<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">assert<\/span><span class=\"token punctuation\">(<\/span>pstack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u65ad\u8a00\u786e\u4fdd\u4f20\u5165\u7684\u6307\u9488\u975e\u7a7a<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u5224\u65ad\u6808\u662f\u5426\u5df2\u6ee1&#xff0c;\u82e5\u6808\u6ee1\u5219\u6269\u5bb9<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>pstack<span class=\"token operator\">-&gt;<\/span>top <span class=\"token operator\">&#061;&#061;<\/span> pstack<span class=\"token operator\">-&gt;<\/span>capacity <span class=\"token operator\">&#8211;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        DataType<span class=\"token operator\">*<\/span> tmp <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span>DataType<span class=\"token operator\">*<\/span><span class=\"token punctuation\">)<\/span><span class=\"token function\">realloc<\/span><span class=\"token punctuation\">(<\/span>pstack<span class=\"token operator\">-&gt;<\/span>a<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">sizeof<\/span><span class=\"token punctuation\">(<\/span>DataType<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">*<\/span> pstack<span class=\"token operator\">-&gt;<\/span>capacity <span class=\"token operator\">*<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>tmp <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token comment\">\/\/ \u5224\u65ad\u5185\u5b58\u91cd\u65b0\u5206\u914d\u662f\u5426\u6210\u529f<\/span><br \/>\n            <span class=\"token function\">perror<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;realloc fail&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u82e5\u6269\u5bb9\u5931\u8d25&#xff0c;\u8f93\u51fa\u9519\u8bef\u4fe1\u606f<\/span><br \/>\n            <span class=\"token keyword\">return<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        pstack<span class=\"token operator\">-&gt;<\/span>a <span class=\"token operator\">&#061;<\/span> tmp<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u66f4\u65b0\u6570\u7ec4\u6307\u9488<\/span><br \/>\n        pstack<span class=\"token operator\">-&gt;<\/span>capacity <span class=\"token operator\">*&#061;<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u6808\u7684\u5bb9\u91cf\u7ffb\u500d<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    pstack<span class=\"token operator\">-&gt;<\/span>a<span class=\"token punctuation\">[<\/span><span class=\"token operator\">&#043;&#043;<\/span>pstack<span class=\"token operator\">-&gt;<\/span>top<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> x<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u6808\u9876\u6307\u9488\u589e 1 \u540e\u5b58\u5165\u65b0\u5143\u7d20<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u6808\u7684\u5220\u9664&#xff08;\u5f39\u6808&#xff09;\u64cd\u4f5c<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">StackPop<\/span><span class=\"token punctuation\">(<\/span>Stack<span class=\"token operator\">*<\/span> pstack<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">assert<\/span><span class=\"token punctuation\">(<\/span>pstack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u65ad\u8a00\u786e\u4fdd\u4f20\u5165\u7684\u6307\u9488\u975e\u7a7a<\/span><br \/>\n    <span class=\"token function\">assert<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span><span class=\"token function\">StackEmpty<\/span><span class=\"token punctuation\">(<\/span>pstack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u65ad\u8a00\u786e\u4fdd\u6808\u4e0d\u4e3a\u7a7a&#xff0c;\u9632\u6b62\u6ea2\u51fa<\/span><br \/>\n    pstack<span class=\"token operator\">-&gt;<\/span>top<span class=\"token operator\">&#8212;<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u6808\u9876\u6307\u9488\u51cf 1&#xff0c;\u5b9e\u73b0\u5143\u7d20\u51fa\u6808<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u5224\u65ad\u6808\u662f\u5426\u4e3a\u7a7a\u7684\u51fd\u6570<\/span><br \/>\nbool <span class=\"token function\">StackEmpty<\/span><span class=\"token punctuation\">(<\/span>Stack<span class=\"token operator\">*<\/span> pstack<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">assert<\/span><span class=\"token punctuation\">(<\/span>pstack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u65ad\u8a00\u786e\u4fdd\u4f20\u5165\u7684\u6307\u9488\u975e\u7a7a<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> pstack<span class=\"token operator\">-&gt;<\/span>top <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u82e5\u6808\u9876\u6307\u9488\u4e3a -1 \u5219\u6808\u4e3a\u7a7a&#xff0c;\u8fd4\u56de true&#xff0c;\u5426\u5219\u8fd4\u56de false<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u83b7\u53d6\u6808\u9876\u5143\u7d20\u7684\u51fd\u6570<\/span><br \/>\nDataType <span class=\"token function\">StackTop<\/span><span class=\"token punctuation\">(<\/span>Stack<span class=\"token operator\">*<\/span> pstack<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">assert<\/span><span class=\"token punctuation\">(<\/span>pstack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u65ad\u8a00\u786e\u4fdd\u4f20\u5165\u7684\u6307\u9488\u975e\u7a7a<\/span><br \/>\n    <span class=\"token function\">assert<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span><span class=\"token function\">StackEmpty<\/span><span class=\"token punctuation\">(<\/span>pstack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u65ad\u8a00\u786e\u4fdd\u6808\u4e0d\u4e3a\u7a7a&#xff0c;\u9632\u6b62\u8bbf\u95ee\u8d8a\u754c<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> pstack<span class=\"token operator\">-&gt;<\/span>a<span class=\"token punctuation\">[<\/span>pstack<span class=\"token operator\">-&gt;<\/span>top<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u8fd4\u56de\u6808\u9876\u5143\u7d20\u7684\u503c<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u83b7\u53d6\u6808\u4e2d\u5143\u7d20\u4e2a\u6570\u7684\u51fd\u6570<\/span><br \/>\n<span class=\"token keyword\">int<\/span> <span class=\"token function\">StackSize<\/span><span class=\"token punctuation\">(<\/span>Stack<span class=\"token operator\">*<\/span> pstack<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">assert<\/span><span class=\"token punctuation\">(<\/span>pstack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u65ad\u8a00\u786e\u4fdd\u4f20\u5165\u7684\u6307\u9488\u975e\u7a7a<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> pstack<span class=\"token operator\">-&gt;<\/span>top <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u6808\u9876\u6307\u9488\u52a0 1 \u5373\u4e3a\u6808\u4e2d\u5143\u7d20\u4e2a\u6570<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>&#xff08;\u4e8c&#xff09;\u94fe\u6808\u7684\u5b9e\u73b0<\/h4>\n<p><span class=\"token comment\">\/\/ \u5b9a\u4e49\u6808\u4e2d\u5b58\u50a8\u7684\u6570\u636e\u7c7b\u578b\u4e3a\u6574\u578b<\/span><br \/>\n<span class=\"token keyword\">typedef<\/span> <span class=\"token keyword\">int<\/span> DataType<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u5b9a\u4e49\u94fe\u6808\u8282\u70b9\u7684\u7ed3\u6784\u4f53&#xff0c;\u5305\u542b\u5b58\u50a8\u7684\u6570\u636e\u548c\u6307\u5411\u4e0b\u4e00\u4e2a\u8282\u70b9\u7684\u6307\u9488<\/span><br \/>\n<span class=\"token keyword\">typedef<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">Node<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    DataType data<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u8282\u70b9\u5b58\u50a8\u7684\u6570\u636e<\/span><br \/>\n    <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">Node<\/span><span class=\"token operator\">*<\/span> next<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u6307\u5411\u4e0b\u4e00\u4e2a\u8282\u70b9\u7684\u6307\u9488<\/span><br \/>\n<span class=\"token punctuation\">}<\/span> Node<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u5b9a\u4e49\u94fe\u6808\u7684\u7ed3\u6784\u4f53&#xff0c;\u5305\u542b\u6307\u5411\u6808\u9876\u7684\u6307\u9488<\/span><br \/>\n<span class=\"token keyword\">typedef<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">LinkStack<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    Node<span class=\"token operator\">*<\/span> top<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u6808\u9876\u6307\u9488&#xff0c;\u521d\u59cb\u503c\u4e3a NULL \u8868\u793a\u6808\u4e3a\u7a7a<\/span><br \/>\n<span class=\"token punctuation\">}<\/span> LinkStack<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u94fe\u6808\u7684\u521d\u59cb\u5316\u51fd\u6570<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">LinkStackInit<\/span><span class=\"token punctuation\">(<\/span>LinkStack<span class=\"token operator\">*<\/span> pstack<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">assert<\/span><span class=\"token punctuation\">(<\/span>pstack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u65ad\u8a00\u786e\u4fdd\u4f20\u5165\u7684\u6307\u9488\u975e\u7a7a<\/span><br \/>\n    pstack<span class=\"token operator\">-&gt;<\/span>top <span class=\"token operator\">&#061;<\/span> <span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u6808\u9876\u6307\u9488\u521d\u59cb\u5316\u4e3a\u7a7a<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u94fe\u6808\u7684\u9500\u6bc1\u51fd\u6570<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">LinkStackDestroy<\/span><span class=\"token punctuation\">(<\/span>LinkStack<span class=\"token operator\">*<\/span> pstack<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">assert<\/span><span class=\"token punctuation\">(<\/span>pstack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u65ad\u8a00\u786e\u4fdd\u4f20\u5165\u7684\u6307\u9488\u975e\u7a7a<\/span><br \/>\n    Node<span class=\"token operator\">*<\/span> cur <span class=\"token operator\">&#061;<\/span> pstack<span class=\"token operator\">-&gt;<\/span>top<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u4ece\u6808\u9876\u5f00\u59cb\u904d\u5386<\/span><br \/>\n    <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span>cur<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token comment\">\/\/ \u904d\u5386\u94fe\u6808\u4e2d\u7684\u6bcf\u4e2a\u8282\u70b9<\/span><br \/>\n        Node<span class=\"token operator\">*<\/span> next <span class=\"token operator\">&#061;<\/span> cur<span class=\"token operator\">-&gt;<\/span>next<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u4fdd\u5b58\u4e0b\u4e00\u4e2a\u8282\u70b9\u7684\u5730\u5740<\/span><br \/>\n        <span class=\"token function\">free<\/span><span class=\"token punctuation\">(<\/span>cur<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u91ca\u653e\u5f53\u524d\u8282\u70b9\u7684\u5185\u5b58<\/span><br \/>\n        cur <span class=\"token operator\">&#061;<\/span> next<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u79fb\u52a8\u5230\u4e0b\u4e00\u4e2a\u8282\u70b9<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    pstack<span class=\"token operator\">-&gt;<\/span>top <span class=\"token operator\">&#061;<\/span> <span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u9500\u6bc1\u540e\u6808\u9876\u6307\u9488\u7f6e\u4e3a\u7a7a<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u94fe\u6808\u7684\u63d2\u5165&#xff08;\u538b\u6808&#xff09;\u64cd\u4f5c<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">LinkStackPush<\/span><span class=\"token punctuation\">(<\/span>LinkStack<span class=\"token operator\">*<\/span> pstack<span class=\"token punctuation\">,<\/span> DataType x<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">assert<\/span><span class=\"token punctuation\">(<\/span>pstack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u65ad\u8a00\u786e\u4fdd\u4f20\u5165\u7684\u6307\u9488\u975e\u7a7a<\/span><br \/>\n    Node<span class=\"token operator\">*<\/span> new_node <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span>Node<span class=\"token operator\">*<\/span><span class=\"token punctuation\">)<\/span><span class=\"token function\">malloc<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">sizeof<\/span><span class=\"token punctuation\">(<\/span>Node<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u52a8\u6001\u5206\u914d\u65b0\u8282\u70b9\u5185\u5b58<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>new_node <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token comment\">\/\/ \u5224\u65ad\u5185\u5b58\u5206\u914d\u662f\u5426\u6210\u529f<\/span><br \/>\n        <span class=\"token function\">perror<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;malloc fail&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u82e5\u5206\u914d\u5931\u8d25&#xff0c;\u8f93\u51fa\u9519\u8bef\u4fe1\u606f<\/span><br \/>\n        <span class=\"token keyword\">return<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    new_node<span class=\"token operator\">-&gt;<\/span>data <span class=\"token operator\">&#061;<\/span> x<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5c06\u6570\u636e\u5b58\u5165\u65b0\u8282\u70b9<\/span><br \/>\n    new_node<span class=\"token operator\">-&gt;<\/span>next <span class=\"token operator\">&#061;<\/span> pstack<span class=\"token operator\">-&gt;<\/span>top<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u65b0\u8282\u70b9\u7684 next \u6307\u9488\u6307\u5411\u539f\u6808\u9876<\/span><br \/>\n    pstack<span class=\"token operator\">-&gt;<\/span>top <span class=\"token operator\">&#061;<\/span> new_node<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u66f4\u65b0\u6808\u9876\u6307\u9488\u4e3a\u65b0\u8282\u70b9<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u94fe\u6808\u7684\u5220\u9664&#xff08;\u5f39\u6808&#xff09;\u64cd\u4f5c<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">LinkStackPop<\/span><span class=\"token punctuation\">(<\/span>LinkStack<span class=\"token operator\">*<\/span> pstack<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">assert<\/span><span class=\"token punctuation\">(<\/span>pstack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u65ad\u8a00\u786e\u4fdd\u4f20\u5165\u7684\u6307\u9488\u975e\u7a7a<\/span><br \/>\n    <span class=\"token function\">assert<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span><span class=\"token function\">LinkStackEmpty<\/span><span class=\"token punctuation\">(<\/span>pstack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u65ad\u8a00\u786e\u4fdd\u6808\u4e0d\u4e3a\u7a7a&#xff0c;\u9632\u6b62\u6ea2\u51fa<\/span><br \/>\n    Node<span class=\"token operator\">*<\/span> tmp <span class=\"token operator\">&#061;<\/span> pstack<span class=\"token operator\">-&gt;<\/span>top<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u4fdd\u5b58\u5f53\u524d\u6808\u9876\u8282\u70b9<\/span><br \/>\n    pstack<span class=\"token operator\">-&gt;<\/span>top <span class=\"token operator\">&#061;<\/span> pstack<span class=\"token operator\">-&gt;<\/span>top<span class=\"token operator\">-&gt;<\/span>next<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u66f4\u65b0\u6808\u9876\u6307\u9488\u4e3a\u4e0b\u4e00\u4e2a\u8282\u70b9<\/span><br \/>\n    <span class=\"token function\">free<\/span><span class=\"token punctuation\">(<\/span>tmp<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u91ca\u653e\u539f\u6808\u9876\u8282\u70b9\u5185\u5b58<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u5224\u65ad\u94fe\u6808\u662f\u5426\u4e3a\u7a7a\u7684\u51fd\u6570<\/span><br \/>\nbool <span class=\"token function\">LinkStackEmpty<\/span><span class=\"token punctuation\">(<\/span>LinkStack<span class=\"token operator\">*<\/span> pstack<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">assert<\/span><span class=\"token punctuation\">(<\/span>pstack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u65ad\u8a00\u786e\u4fdd\u4f20\u5165\u7684\u6307\u9488\u975e\u7a7a<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> pstack<span class=\"token operator\">-&gt;<\/span>top <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u82e5\u6808\u9876\u6307\u9488\u4e3a\u7a7a\u5219\u6808\u4e3a\u7a7a&#xff0c;\u8fd4\u56de true&#xff0c;\u5426\u5219\u8fd4\u56de false<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u83b7\u53d6\u94fe\u6808\u6808\u9876\u5143\u7d20\u7684\u51fd\u6570<\/span><br \/>\nDataType <span class=\"token function\">LinkStackTop<\/span><span class=\"token punctuation\">(<\/span>LinkStack<span class=\"token operator\">*<\/span> pstack<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">assert<\/span><span class=\"token punctuation\">(<\/span>pstack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u65ad\u8a00\u786e\u4fdd\u4f20\u5165\u7684\u6307\u9488\u975e\u7a7a<\/span><br \/>\n    <span class=\"token function\">assert<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span><span class=\"token function\">LinkStackEmpty<\/span><span class=\"token punctuation\">(<\/span>pstack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u65ad\u8a00\u786e\u4fdd\u6808\u4e0d\u4e3a\u7a7a&#xff0c;\u9632\u6b62\u8bbf\u95ee\u8d8a\u754c<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> pstack<span class=\"token operator\">-&gt;<\/span>top<span class=\"token operator\">-&gt;<\/span>data<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u8fd4\u56de\u6808\u9876\u5143\u7d20\u7684\u503c<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u83b7\u53d6\u94fe\u6808\u4e2d\u5143\u7d20\u4e2a\u6570\u7684\u51fd\u6570<\/span><br \/>\n<span class=\"token keyword\">int<\/span> <span class=\"token function\">LinkStackSize<\/span><span class=\"token punctuation\">(<\/span>LinkStack<span class=\"token operator\">*<\/span> pstack<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">assert<\/span><span class=\"token punctuation\">(<\/span>pstack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u65ad\u8a00\u786e\u4fdd\u4f20\u5165\u7684\u6307\u9488\u975e\u7a7a<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> size <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u521d\u59cb\u5316\u8ba1\u6570\u5668\u4e3a 0<\/span><br \/>\n    Node<span class=\"token operator\">*<\/span> cur <span class=\"token operator\">&#061;<\/span> pstack<span class=\"token operator\">-&gt;<\/span>top<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u4ece\u6808\u9876\u5f00\u59cb\u904d\u5386<\/span><br \/>\n    <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span>cur<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token comment\">\/\/ \u904d\u5386\u94fe\u6808\u4e2d\u7684\u6bcf\u4e2a\u8282\u70b9<\/span><br \/>\n        size<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u6bcf\u904d\u5386\u4e00\u4e2a\u8282\u70b9\u8ba1\u6570\u5668\u52a0 1<\/span><br \/>\n        cur <span class=\"token operator\">&#061;<\/span> cur<span class=\"token operator\">-&gt;<\/span>next<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u79fb\u52a8\u5230\u4e0b\u4e00\u4e2a\u8282\u70b9<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> size<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u8fd4\u56de\u94fe\u6808\u4e2d\u5143\u7d20\u7684\u603b\u4e2a\u6570<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h3>\u6808\u7684\u5e94\u7528<\/h3>\n<h4>&#xff08;\u4e00&#xff09;\u62ec\u53f7\u5339\u914d<\/h4>\n<p>\u62ec\u53f7\u5339\u914d\u662f\u4e00\u79cd\u7ecf\u5178\u7684\u6808\u5e94\u7528&#xff0c;\u7528\u4e8e\u68c0\u67e5\u8868\u8fbe\u5f0f\u4e2d\u7684\u62ec\u53f7\u662f\u5426\u6b63\u786e\u5339\u914d\u3002<\/p>\n<p><span class=\"token comment\">\/\/ \u5224\u65ad\u62ec\u53f7\u5339\u914d\u7684\u51fd\u6570<\/span><br \/>\nbool <span class=\"token function\">isValid<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">char<\/span><span class=\"token operator\">*<\/span> s<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    Stack stack<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5b9a\u4e49\u4e00\u4e2a\u987a\u5e8f\u6808<\/span><br \/>\n    <span class=\"token function\">StackInit<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u521d\u59cb\u5316\u6808<\/span><br \/>\n    <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> s<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">!&#061;<\/span> <span class=\"token char\">&#039;\\\\0&#039;<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token comment\">\/\/ \u904d\u5386\u5b57\u7b26\u4e32\u4e2d\u7684\u6bcf\u4e2a\u5b57\u7b26<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>s<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token char\">&#039;(&#039;<\/span> <span class=\"token operator\">||<\/span> s<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token char\">&#039;[&#039;<\/span> <span class=\"token operator\">||<\/span> s<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token char\">&#039;{&#039;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token comment\">\/\/ \u82e5\u5b57\u7b26\u4e3a\u5de6\u62ec\u53f7<\/span><br \/>\n            <span class=\"token function\">StackPush<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">,<\/span> s<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5c06\u5de6\u62ec\u53f7\u538b\u5165\u6808\u4e2d<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token comment\">\/\/ \u82e5\u5b57\u7b26\u4e3a\u53f3\u62ec\u53f7<\/span><br \/>\n            <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token function\">StackEmpty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token comment\">\/\/ \u5224\u65ad\u6808\u662f\u5426\u4e3a\u7a7a&#xff0c;\u82e5\u4e3a\u7a7a\u8bf4\u660e\u6ca1\u6709\u5339\u914d\u7684\u5de6\u62ec\u53f7<\/span><br \/>\n                <span class=\"token function\">StackDestroy<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u9500\u6bc1\u6808\u4ee5\u91ca\u653e\u8d44\u6e90<\/span><br \/>\n                <span class=\"token keyword\">return<\/span> false<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u8fd4\u56de\u4e0d\u5339\u914d\u7684\u7ed3\u679c<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n            <span class=\"token keyword\">char<\/span> top <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">StackTop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u53d6\u51fa\u6808\u9876\u5143\u7d20&#xff08;\u6700\u8fd1\u7684\u5de6\u62ec\u53f7&#xff09;<\/span><br \/>\n            <span class=\"token function\">StackPop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5c06\u6808\u9876\u5143\u7d20\u5f39\u51fa<\/span><br \/>\n            <span class=\"token comment\">\/\/ \u5224\u65ad\u53f3\u62ec\u53f7\u4e0e\u5de6\u62ec\u53f7\u662f\u5426\u5339\u914d<\/span><br \/>\n            <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span>s<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token char\">&#039;)&#039;<\/span> <span class=\"token operator\">&amp;&amp;<\/span> top <span class=\"token operator\">!&#061;<\/span> <span class=\"token char\">&#039;(&#039;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">||<\/span> <span class=\"token punctuation\">(<\/span>s<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token char\">&#039;]&#039;<\/span> <span class=\"token operator\">&amp;&amp;<\/span> top <span class=\"token operator\">!&#061;<\/span> <span class=\"token char\">&#039;[&#039;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">||<\/span> <span class=\"token punctuation\">(<\/span>s<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token char\">&#039;}&#039;<\/span> <span class=\"token operator\">&amp;&amp;<\/span> top <span class=\"token operator\">!&#061;<\/span> <span class=\"token char\">&#039;{&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token function\">StackDestroy<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u9500\u6bc1\u6808\u4ee5\u91ca\u653e\u8d44\u6e90<\/span><br \/>\n                <span class=\"token keyword\">return<\/span> false<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u82e5\u4e0d\u5339\u914d&#xff0c;\u8fd4\u56de\u4e0d\u5339\u914d\u7684\u7ed3\u679c<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    bool result <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">StackEmpty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u82e5\u904d\u5386\u7ed3\u675f\u6808\u4e3a\u7a7a&#xff0c;\u5219\u6240\u6709\u62ec\u53f7\u5339\u914d&#xff1b;\u5426\u5219\u5b58\u5728\u672a\u5339\u914d\u7684\u5de6\u62ec\u53f7<\/span><br \/>\n    <span class=\"token function\">StackDestroy<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u9500\u6bc1\u6808\u4ee5\u91ca\u653e\u8d44\u6e90<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> result<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u8fd4\u56de\u5224\u65ad\u7ed3\u679c<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>&#xff08;\u4e8c&#xff09;\u4e2d\u7f00\u8868\u8fbe\u5f0f\u8f6c\u540e\u7f00\u8868\u8fbe\u5f0f<\/h4>\n<p>\u4e2d\u7f00\u8868\u8fbe\u5f0f\u8f6c\u540e\u7f00\u8868\u8fbe\u5f0f\u662f\u53e6\u4e00\u79cd\u7ecf\u5178\u7684\u6808\u5e94\u7528\u3002<\/p>\n<p><span class=\"token comment\">\/\/ \u5224\u65ad\u5b57\u7b26\u662f\u5426\u4e3a\u8fd0\u7b97\u7b26\u7684\u8f85\u52a9\u51fd\u6570<\/span><br \/>\nbool <span class=\"token function\">isOperator<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">char<\/span> c<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> c <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token char\">&#039;&#043;&#039;<\/span> <span class=\"token operator\">||<\/span> c <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token char\">&#039;-&#039;<\/span> <span class=\"token operator\">||<\/span> c <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token char\">&#039;*&#039;<\/span> <span class=\"token operator\">||<\/span> c <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token char\">&#039;\/&#039;<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u82e5\u5b57\u7b26\u662f\u5176\u4e2d\u4e4b\u4e00&#xff0c;\u5219\u8fd4\u56de true \u8868\u793a\u662f\u8fd0\u7b97\u7b26<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u83b7\u53d6\u8fd0\u7b97\u7b26\u4f18\u5148\u7ea7\u7684\u8f85\u52a9\u51fd\u6570<\/span><br \/>\n<span class=\"token keyword\">int<\/span> <span class=\"token function\">precedence<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">char<\/span> op<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>op <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token char\">&#039;&#043;&#039;<\/span> <span class=\"token operator\">||<\/span> op <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token char\">&#039;-&#039;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token comment\">\/\/ \u52a0\u51cf\u8fd0\u7b97\u7b26\u4f18\u5148\u7ea7\u8f83\u4f4e&#xff0c;\u8fd4\u56de 1<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>op <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token char\">&#039;*&#039;<\/span> <span class=\"token operator\">||<\/span> op <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token char\">&#039;\/&#039;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token comment\">\/\/ \u4e58\u9664\u8fd0\u7b97\u7b26\u4f18\u5148\u7ea7\u8f83\u9ad8&#xff0c;\u8fd4\u56de 2<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token comment\">\/\/ \u5176\u4ed6\u5b57\u7b26\u4e0d\u662f\u8fd0\u7b97\u7b26&#xff0c;\u8fd4\u56de 0<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u4e2d\u7f00\u8868\u8fbe\u5f0f\u8f6c\u540e\u7f00\u8868\u8fbe\u5f0f\u7684\u51fd\u6570<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">infixToPostfix<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">char<\/span><span class=\"token operator\">*<\/span> infix<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">char<\/span><span class=\"token operator\">*<\/span> postfix<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    Stack stack<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5b9a\u4e49\u4e00\u4e2a\u987a\u5e8f\u6808<\/span><br \/>\n    <span class=\"token function\">StackInit<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u521d\u59cb\u5316\u6808<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> j <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u7528\u4e8e\u8bb0\u5f55\u540e\u7f00\u8868\u8fbe\u5f0f\u4e2d\u5b57\u7b26\u7684\u4f4d\u7f6e<\/span><br \/>\n    <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> infix<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">!&#061;<\/span> <span class=\"token char\">&#039;\\\\0&#039;<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token comment\">\/\/ \u904d\u5386\u4e2d\u7f00\u8868\u8fbe\u5f0f\u7684\u6bcf\u4e2a\u5b57\u7b26<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>infix<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token char\">&#039;(&#039;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token comment\">\/\/ \u82e5\u9047\u5230\u5de6\u62ec\u53f7&#xff0c;\u76f4\u63a5\u538b\u6808<\/span><br \/>\n            <span class=\"token function\">StackPush<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">,<\/span> infix<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>infix<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token char\">&#039;)&#039;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token comment\">\/\/ \u82e5\u9047\u5230\u53f3\u62ec\u53f7<\/span><br \/>\n            <span class=\"token comment\">\/\/ \u4f9d\u6b21\u5f39\u51fa\u6808\u4e2d\u7684\u8fd0\u7b97\u7b26\u76f4\u5230\u9047\u5230\u5de6\u62ec\u53f7&#xff0c;\u5e76\u5c06\u5f39\u51fa\u7684\u8fd0\u7b97\u7b26\u52a0\u5165\u540e\u7f00\u8868\u8fbe\u5f0f<\/span><br \/>\n            <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span><span class=\"token function\">StackEmpty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&amp;&amp;<\/span> <span class=\"token function\">StackTop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">!&#061;<\/span> <span class=\"token char\">&#039;(&#039;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                postfix<span class=\"token punctuation\">[<\/span>j<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">StackTop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                <span class=\"token function\">StackPop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n            <span class=\"token function\">StackPop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5f39\u51fa\u5de6\u62ec\u53f7&#xff0c;\u4f46\u4e0d\u52a0\u5165\u540e\u7f00\u8868\u8fbe\u5f0f<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token function\">isOperator<\/span><span class=\"token punctuation\">(<\/span>infix<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token comment\">\/\/ \u82e5\u9047\u5230\u8fd0\u7b97\u7b26<\/span><br \/>\n            <span class=\"token comment\">\/\/ \u5c06\u6808\u4e2d\u4f18\u5148\u7ea7\u5927\u4e8e\u7b49\u4e8e\u5f53\u524d\u8fd0\u7b97\u7b26\u7684\u8fd0\u7b97\u7b26\u4f9d\u6b21\u5f39\u51fa\u5e76\u52a0\u5165\u540e\u7f00\u8868\u8fbe\u5f0f<\/span><br \/>\n            <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span><span class=\"token function\">StackEmpty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&amp;&amp;<\/span> <span class=\"token function\">precedence<\/span><span class=\"token punctuation\">(<\/span>infix<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&#061;<\/span> <span class=\"token function\">precedence<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">StackTop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                postfix<span class=\"token punctuation\">[<\/span>j<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">StackTop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                <span class=\"token function\">StackPop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n            <span class=\"token function\">StackPush<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">,<\/span> infix<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5c06\u5f53\u524d\u8fd0\u7b97\u7b26\u538b\u6808<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token comment\">\/\/ \u82e5\u662f\u64cd\u4f5c\u6570&#xff0c;\u76f4\u63a5\u52a0\u5165\u540e\u7f00\u8868\u8fbe\u5f0f<\/span><br \/>\n            postfix<span class=\"token punctuation\">[<\/span>j<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> infix<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u5f39\u51fa\u6808\u4e2d\u5269\u4f59\u7684\u8fd0\u7b97\u7b26\u5e76\u52a0\u5165\u540e\u7f00\u8868\u8fbe\u5f0f<\/span><br \/>\n    <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span><span class=\"token function\">StackEmpty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        postfix<span class=\"token punctuation\">[<\/span>j<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">StackTop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token function\">StackPop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    postfix<span class=\"token punctuation\">[<\/span>j<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token char\">&#039;\\\\0&#039;<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5728\u540e\u7f00\u8868\u8fbe\u5f0f\u672b\u5c3e\u6dfb\u52a0\u5b57\u7b26\u4e32\u7ed3\u675f\u6807\u5fd7<\/span><br \/>\n    <span class=\"token function\">StackDestroy<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u9500\u6bc1\u6808\u4ee5\u91ca\u653e\u8d44\u6e90<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h3>\u4f8b\u9898<\/h3>\n<h4>20. \u6709\u6548\u7684\u62ec\u53f7 &#8211; \u529b\u6263&#xff08;LeetCode&#xff09;<\/h4>\n<p>\u7ed9\u5b9a\u4e00\u4e2a\u53ea\u5305\u542b\u4e09\u79cd\u62ec\u53f7\u5b57\u7b26 &#039;(&#039;\u3001&#039;)&#039;\u3001&#039;{&#039;\u3001&#039;}&#039;\u3001&#039;[&#039; \u548c &#039;]&#039; \u7684\u5b57\u7b26\u4e32 s&#xff0c;\u5224\u65ad s \u662f\u5426\u662f\u6709\u6548\u7684\u62ec\u53f7\u5b57\u7b26\u4e32\u3002<\/p>\n<p>\u793a\u4f8b 1:<\/p>\n<p> \u8f93\u5165&#xff1a;s &#061; &#034;()&#034;<br \/>\n\u8f93\u51fa&#xff1a;true<\/p>\n<p>\u793a\u4f8b 2:<\/p>\n<p> \u8f93\u5165&#xff1a;s &#061; &#034;()[]{}&#034;<br \/>\n\u8f93\u51fa&#xff1a;true<\/p>\n<p>\u793a\u4f8b 3:<\/p>\n<p> \u8f93\u5165&#xff1a;s &#061; &#034;(]&#034;<br \/>\n\u8f93\u51fa&#xff1a;false<\/p>\n<p>\u200b \u6211\u4eec\u9996\u5148\u521d\u59cb\u5316\u4e00\u4e2a\u7a7a\u6808&#xff0c;\u7136\u540e\u904d\u5386\u5b57\u7b26\u4e32\u4e2d\u7684\u6bcf\u4e00\u4e2a\u5b57\u7b26\u3002\u5982\u679c\u5b57\u7b26\u4e32\u662f\u5de6\u62ec\u53f7&#xff0c;\u5219\u538b\u5165\u6808\u3002\u5982\u679c\u5b57\u7b26\u662f\u53f3\u62ec\u53f7&#xff0c;\u5219\u68c0\u67e5\u6808\u9876\u5143\u7d20\u662f\u5426\u5339\u914d&#xff0c;\u5339\u914d\u5219\u5f39\u6808&#xff0c;\u5426\u5219\u8fd4\u56de false\u3002\u5982\u679c\u5b57\u7b26\u662f\u53f3\u62ec\u53f7&#xff0c;\u5219\u68c0\u67e5\u6808\u9876\u5143\u7d20\u662f\u5426\u5339\u914d&#xff0c;\u5339\u914d\u5219\u5f39\u6808&#xff0c;\u5426\u5219\u8fd4\u56de false<\/p>\n<p><span class=\"token comment\">\/\/ \u5224\u65ad\u62ec\u53f7\u5339\u914d\u7684\u51fd\u6570&#xff08;\u4e0e\u524d\u9762\u7684 isValid \u51fd\u6570\u4e00\u81f4&#xff09;<\/span><br \/>\nbool <span class=\"token function\">isValid<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">char<\/span><span class=\"token operator\">*<\/span> s<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    Stack stack<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">StackInit<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> s<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">!&#061;<\/span> <span class=\"token char\">&#039;\\\\0&#039;<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>s<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token char\">&#039;(&#039;<\/span> <span class=\"token operator\">||<\/span> s<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token char\">&#039;[&#039;<\/span> <span class=\"token operator\">||<\/span> s<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token char\">&#039;{&#039;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token function\">StackPush<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">,<\/span> s<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token function\">StackEmpty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token function\">StackDestroy<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                <span class=\"token keyword\">return<\/span> false<span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n            <span class=\"token keyword\">char<\/span> top <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">StackTop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token function\">StackPop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span>s<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token char\">&#039;)&#039;<\/span> <span class=\"token operator\">&amp;&amp;<\/span> top <span class=\"token operator\">!&#061;<\/span> <span class=\"token char\">&#039;(&#039;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">||<\/span> <span class=\"token punctuation\">(<\/span>s<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token char\">&#039;]&#039;<\/span> <span class=\"token operator\">&amp;&amp;<\/span> top <span class=\"token operator\">!&#061;<\/span> <span class=\"token char\">&#039;[&#039;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">||<\/span> <span class=\"token punctuation\">(<\/span>s<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token char\">&#039;}&#039;<\/span> <span class=\"token operator\">&amp;&amp;<\/span> top <span class=\"token operator\">!&#061;<\/span> <span class=\"token char\">&#039;{&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token function\">StackDestroy<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                <span class=\"token keyword\">return<\/span> false<span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    bool result <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">StackEmpty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">StackDestroy<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> result<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>150. \u9006\u6ce2\u5170\u8868\u8fbe\u5f0f\u6c42\u503c &#8211; \u529b\u6263&#xff08;LeetCode&#xff09;<\/h4>\n<p>\u6839\u636e\u9006\u6ce2\u5170\u8868\u793a\u6cd5&#xff0c;\u6c42\u8868\u8fbe\u5f0f\u7684\u503c\u3002<\/p>\n<p>\u6709\u6548\u7684\u7b97\u7b26\u5305\u62ec &#043;\u3001-\u3001* \u548c \/\u3002\u6bcf\u4e2a\u8fd0\u7b97\u5bf9\u8c61\u53ef\u4ee5\u662f\u6574\u6570&#xff0c;\u4e5f\u53ef\u4ee5\u662f\u53e6\u4e00\u4e2a\u9006\u6ce2\u5170\u8868\u8fbe\u5f0f\u3002<\/p>\n<p>\u793a\u4f8b 1:<\/p>\n<p> \u8f93\u5165&#xff1a;tokens &#061; [&#034;2&#034;,&#034;1&#034;,&#034;&#043;&#034;,&#034;3&#034;,&#034;*&#034;]<br \/>\n\u8f93\u51fa&#xff1a;9<br \/>\n\u89e3\u91ca&#xff1a;\u8be5\u7b97\u5f0f\u8f6c\u5316\u4e3a\u5e38\u89c1\u7684\u4e2d\u7f00\u9006\u6ce2\u5170\u8868\u8fbe\u5f0f\u4e3a&#xff1a;((2 &#043; 1) * 3) &#061; 9<\/p>\n<p>\u793a\u4f8b 2:<\/p>\n<p> \u8f93\u5165&#xff1a;tokens &#061; [&#034;4&#034;,&#034;13&#034;,&#034;5&#034;,&#034;\/&#034;,&#034;&#043;&#034;]<br \/>\n\u8f93\u51fa&#xff1a;6<br \/>\n\u89e3\u91ca&#xff1a;\u8be5\u7b97\u5f0f\u8f6c\u5316\u4e3a\u5e38\u89c1\u7684\u4e2d\u7f00\u9006\u6ce2\u5170\u8868\u8fbe\u5f0f\u4e3a&#xff1a;(4 &#043; (13 \/ 5)) &#061; 6<\/p>\n<p>\u200b \u4f9d\u65e7\u662f\u521d\u59cb\u5316\u4e00\u4e2a\u7a7a\u6808&#xff0c;\u7136\u540e\u904d\u5386\u9006\u6ce2\u5170\u8868\u8fbe\u5f0f\u3002\u5982\u679c\u5143\u7d20\u662f\u6570\u5b57&#xff0c;\u5219\u538b\u5165\u6808\u3002\u5982\u679c\u5143\u7d20\u662f\u8fd0\u7b97\u7b26&#xff0c;\u5219\u5f39\u51fa\u6808\u9876\u7684\u4e24\u4e2a\u6570\u5b57\u8fdb\u884c\u8fd0\u7b97&#xff0c;\u5c06\u7ed3\u679c\u538b\u5165\u6808\u3002\u6700\u540e\u6808\u9876\u5143\u7d20\u5373\u4e3a\u7ed3\u679c\u3002<\/p>\n<p><span class=\"token comment\">\/\/ \u9006\u6ce2\u5170\u8868\u8fbe\u5f0f\u6c42\u503c\u7684\u51fd\u6570<\/span><br \/>\n<span class=\"token keyword\">int<\/span> <span class=\"token function\">evalRPN<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">char<\/span><span class=\"token operator\">*<\/span><span class=\"token operator\">*<\/span> tokens<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> tokensSize<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    Stack stack<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">StackInit<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> tokensSize<span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token comment\">\/\/ \u904d\u5386\u9006\u6ce2\u5170\u8868\u8fbe\u5f0f\u7684\u6bcf\u4e2a\u6807\u8bb0<\/span><br \/>\n        <span class=\"token keyword\">char<\/span><span class=\"token operator\">*<\/span> token <span class=\"token operator\">&#061;<\/span> tokens<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/ \u5224\u65ad\u662f\u5426\u4e3a\u8fd0\u7b97\u7b26<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token function\">strcmp<\/span><span class=\"token punctuation\">(<\/span>token<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;&#043;&#034;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token function\">assert<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span><span class=\"token function\">StackEmpty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u786e\u4fdd\u6808\u4e2d\u6709\u8db3\u591f\u7684\u64cd\u4f5c\u6570<\/span><br \/>\n            <span class=\"token keyword\">int<\/span> b <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">StackTop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u53d6\u51fa\u6808\u9876\u5143\u7d20\u4f5c\u4e3a\u7b2c\u4e8c\u4e2a\u64cd\u4f5c\u6570<\/span><br \/>\n            <span class=\"token function\">StackPop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">int<\/span> a <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">StackTop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u53d6\u51fa\u4e0b\u4e00\u4e2a\u6808\u9876\u5143\u7d20\u4f5c\u4e3a\u7b2c\u4e00\u4e2a\u64cd\u4f5c\u6570<\/span><br \/>\n            <span class=\"token function\">StackPop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token function\">StackPush<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">,<\/span> a <span class=\"token operator\">&#043;<\/span> b<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5c06\u8fd0\u7b97\u7ed3\u679c\u538b\u6808<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token function\">strcmp<\/span><span class=\"token punctuation\">(<\/span>token<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;-&#034;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token function\">assert<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span><span class=\"token function\">StackEmpty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">int<\/span> b <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">StackTop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token function\">StackPop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">int<\/span> a <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">StackTop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token function\">StackPop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token function\">StackPush<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">,<\/span> a <span class=\"token operator\">&#8211;<\/span> b<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token function\">strcmp<\/span><span class=\"token punctuation\">(<\/span>token<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;*&#034;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token function\">assert<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span><span class=\"token function\">StackEmpty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">int<\/span> b <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">StackTop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token function\">StackPop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">int<\/span> a <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">StackTop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token function\">StackPop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token function\">StackPush<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">,<\/span> a <span class=\"token operator\">*<\/span> b<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token function\">strcmp<\/span><span class=\"token punctuation\">(<\/span>token<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;\/&#034;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token function\">assert<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span><span class=\"token function\">StackEmpty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">int<\/span> b <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">StackTop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token function\">StackPop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">int<\/span> a <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">StackTop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token function\">StackPop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token function\">StackPush<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">,<\/span> a <span class=\"token operator\">\/<\/span> b<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token comment\">\/\/ \u82e5\u662f\u64cd\u4f5c\u6570&#xff0c;\u5219\u8f6c\u6362\u4e3a\u6574\u578b\u540e\u538b\u6808<\/span><br \/>\n            <span class=\"token function\">StackPush<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">,<\/span> <span class=\"token function\">atoi<\/span><span class=\"token punctuation\">(<\/span>token<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> result <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">StackTop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u6700\u7ec8\u7ed3\u679c\u4f4d\u4e8e\u6808\u9876<\/span><br \/>\n    <span class=\"token function\">StackDestroy<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> result<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token 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