{"id":120526,"date":"2026-10-31T21:09:15","date_gmt":"2026-10-31T13:09:15","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/120526.html"},"modified":"2026-10-31T21:09:15","modified_gmt":"2026-10-31T13:09:15","slug":"%e4%bc%98%e9%80%89%e7%ae%97%e6%b3%95-%e3%80%90%e5%8f%8c%e6%8c%87%e9%92%88%e7%ae%97%e6%b3%952%e3%80%91c%e5%ae%9e%e7%8e%b0","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/120526.html","title":{"rendered":"\u4f18\u9009\u7b97\u6cd5\u2014\u2014\u3010\u53cc\u6307\u9488\u7b97\u6cd52\u3011C++\u5b9e\u73b0"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261031130911-6ae5e87795959.gif\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>&#x1f308;\u4e2a\u4eba\u4e3b\u9875&#x1f91e; &#064;\uaa94\u5c0f\u6797Y \u2728\u4e2a\u4eba\u4e13\u680f&#x1f917; \u300aC&#043;&#043;\u300b \u300aC\u8bed\u8a00\u300b \u300a\u6570\u636e\u7ed3\u6784\u5165\u95e8\u2014\u2014\u4ece\u539f\u7406\u5230\u5b9e\u6218\u300b \u300a\u62fe\u5149Linux\u300b \u300a\u7f51\u7edc\u5b89\u5168\u300b \u300a\u4f18\u9009\u7b97\u6cd5\u300b &#x1f340;\u4ee3\u7801\u4fe1\u6761 <font color=\"#9370DB\" size=\"4\" face=\"\u534e\u6587\u884c\u6977\">\u6bcf\u4e00\u884c\u4ee3\u7801\u90fd\u662f\u6210\u957f\u7684\u811a\u5370&#x1f463;&#xff0c;\u6bcf\u4e00\u6b21\u8c03\u8bd5\u6210\u529f\u90fd\u662f\u5bf9\u575a\u6301\u7684\u56de\u5e94<\/font><\/p>\n<\/p>\n<h4>\u76ee\u5f55<\/h4>\n<ul>\n<li>\u53cc\u6307\u9488\u7b97\u6cd52<\/li>\n<li>\n<ul>\n<li>5.\u53cc\u6307\u9488_\u6709\u6548\u4e09\u89d2\u5f62\u4e2a\u6570<\/li>\n<li>\n<ul>\n<li>\u601d\u8def<\/li>\n<li>\u4ee3\u7801\u5b9e\u73b0<\/li>\n<\/ul>\n<\/li>\n<li>6.\u53cc\u6307\u9488_\u548c\u4e3as\u7684\u4e24\u4e2a\u6570<\/li>\n<li>\n<ul>\n<li>\u601d\u8def<\/li>\n<li>\u4ee3\u7801\u5b9e\u73b0<\/li>\n<\/ul>\n<\/li>\n<li>7.\u53cc\u6307\u9488_\u4e09\u6570\u4e4b\u548c<\/li>\n<li>\n<ul>\n<li>\u601d\u8def<\/li>\n<li>\u4ee3\u7801\u5b9e\u73b0<\/li>\n<\/ul>\n<\/li>\n<li>8.\u53cc\u6307\u9488_\u56db\u6570\u4e4b\u548c<\/li>\n<li>\n<ul>\n<li>\u601d\u8def<\/li>\n<li>\u4ee3\u7801\u5b9e\u73b0<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>\u53cc\u6307\u9488\u7b97\u6cd52<\/h2>\n<h3>5.\u53cc\u6307\u9488_\u6709\u6548\u4e09\u89d2\u5f62\u4e2a\u6570<\/h3>\n<p>611.\u6709\u6548\u4e09\u89d2\u5f62\u4e2a\u6570 <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261031130912-6ae5e87860590.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h4>\u601d\u8def<\/h4>\n<p>\u89e3\u6cd5\u4e00&#xff1a;\u5229\u7528\u4e09\u89d2\u5f62\u4efb\u610f\u4e24\u8fb9\u4e4b\u548c\u5927\u4e8e\u7b2c\u4e09\u8fb9\u7684\u7279\u6027\u4f7f\u7528\u66b4\u529b\u679a\u4e3e\u6765\u89e3\u8fd9\u9053\u9898&#xff0c;\u4f46\u8fd9\u4e2a\u89e3\u6cd5\u65f6\u95f4\u590d\u6742\u5ea6\u80af\u5b9a\u975e\u5e38\u4e4b\u9ad8&#xff0c;\u6240\u4ee5\u5c31\u4e0d\u8003\u8651\u4e86\u3002 \u89e3\u6cd5\u4e8c&#xff1a;\u5229\u7528\u5355\u8c03\u6027&#xff0c;\u4f7f\u7528\u53cc\u6307\u9488\u7b97\u6cd5\u6765\u89e3\u51b3\u95ee\u9898\u3002 \u30101\u3011\u9996\u5148\u9700\u8981\u5bf9\u6570\u7ec4\u6765\u6392\u4e2a\u5e8f \u30102\u3011\u56fa\u5b9a\u6700\u5927\u7684\u6570&#xff0c;\u800c\u540e\u5c06\u5de6\u8fb9\u7684\u6570\u4f5c\u4e3a\u4e00\u4e2a\u533a\u95f4\u5229\u7528\u53cc\u6307\u9488\u6765\u7edf\u8ba1\u7b26\u5408\u4e09\u5143\u7ec4\u8981\u6c42\u7684\u4e2a\u6570\u3002 \u30103\u3011\u5982\u56fe&#xff0c;\u5148\u5224\u65adL&#043;R\u662f\u5426\u5927\u4e8e\u56fa\u5b9a\u7684M&#xff1a; \u5982\u679c &#xff08;L&#043;R&#xff09;&gt;M&#xff0c;\u5219\u8bf4\u660eR\u52a0\u533a\u95f4\u4efb\u4f55\u4e00\u4e2a\u6570\u90fd\u5927\u4e8eM&#xff0c;\u8fd9\u65f6\u5c31\u53ef\u4ee5\u76f4\u63a5\u7edf\u8ba1\u4e09\u5143\u7ec4\u4e2a\u6570&#xff0c;\u7136\u540e\u5c06R\u5411\u5de6\u79fb\u52a8\u4e00\u4e0b&#xff1b; \u5982\u679c&#xff08;L&#043;R&#xff09;&lt;&#061;M&#xff0c;\u5219\u8bf4\u660eL\u52a0\u533a\u95f4\u4efb\u4f55\u4e00\u4e2a\u6570\u80af\u5b9a\u90fd\u5c0f\u4e8eM&#xff0c;\u8fd9\u65f6\u53ea\u9700\u8981\u5c06L\u5411\u53f3\u79fb\u52a8\u4e00\u4e0b\u3002 <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261031130912-6ae5e87878902.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> \u30104\u3011\u76f4\u5230L&gt;&#061;R&#xff0c;\u6b64\u65f6\u53ea\u9700\u8981\u5c06\u56fa\u5b9a\u7684\u6570\u51cf\u51cf&#xff0c;\u53c8\u4f1a\u6709\u4e00\u4e2a\u65b0\u7684\u533a\u95f4&#xff0c;\u7ee7\u7eed\u91cd\u590d\u4e0a\u8ff0\u6b65\u9aa4\u5c31\u53ef\u4ee5\u4e86\u3002 <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261031130912-6ae5e87890d5c.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261031130912-6ae5e878af935.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h4>\u4ee3\u7801\u5b9e\u73b0<\/h4>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Solution<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> <span class=\"token function\">triangleNumber<\/span><span class=\"token punctuation\">(<\/span>vector<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token operator\">&amp;<\/span> nums<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token function\">sort<\/span><span class=\"token punctuation\">(<\/span>nums<span class=\"token punctuation\">.<\/span><span class=\"token function\">begin<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>nums<span class=\"token punctuation\">.<\/span><span class=\"token function\">end<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/\u56fa\u5b9a\u6700\u5927\u6570&#xff0c;\u5229\u7528\u53cc\u6307\u9488\u7b97\u6cd5\u5feb\u901f\u7edf\u8ba1\u7b26\u5408\u8981\u6c42\u7684\u4e09\u5143\u7ec4\u4e2a\u6570<\/span><br \/>\n        <span class=\"token keyword\">int<\/span> numb<span class=\"token operator\">&#061;<\/span><span class=\"token number\">0<\/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> M<span class=\"token operator\">&#061;<\/span>nums<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span>M<span class=\"token operator\">&gt;<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span>M<span class=\"token operator\">&#061;<\/span>M<span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token keyword\">int<\/span> L<span class=\"token operator\">&#061;<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span>R<span class=\"token operator\">&#061;<\/span>M<span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">while<\/span><span class=\"token punctuation\">(<\/span>L<span class=\"token operator\">&lt;<\/span>R<span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>nums<span class=\"token punctuation\">[<\/span>L<span class=\"token punctuation\">]<\/span><span class=\"token operator\">&#043;<\/span>nums<span class=\"token punctuation\">[<\/span>R<span class=\"token punctuation\">]<\/span><span class=\"token operator\">&gt;<\/span>nums<span class=\"token punctuation\">[<\/span>M<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><br \/>\n                <span class=\"token punctuation\">{<\/span><br \/>\n                    numb<span class=\"token operator\">&#043;&#061;<\/span><span class=\"token punctuation\">(<\/span>R<span class=\"token operator\">&#8211;<\/span>L<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                    R<span class=\"token operator\">&#8212;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                <span class=\"token punctuation\">}<\/span><br \/>\n                <span class=\"token keyword\">else<\/span> L<span class=\"token operator\">&#043;&#043;<\/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\">return<\/span> numb<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h3>6.\u53cc\u6307\u9488_\u548c\u4e3as\u7684\u4e24\u4e2a\u6570<\/h3>\n<p>179.\u67e5\u627e\u603b\u4ef7\u683c\u4e3a\u76ee\u6807\u4ef7\u503c\u7684\u4e24\u4e2a\u5546\u54c1 <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261031130912-6ae5e878c80f0.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h4>\u601d\u8def<\/h4>\n<p>\u89e3\u6cd5\u4e00&#xff1a;\u66b4\u529b\u679a\u4e3e&#xff0c;\u4ece2\u5f00\u59cb\u5411\u540e\u679a\u4e3e\u5e76\u548ctarget\u6bd4\u8f83&#xff0c;\u65f6\u95f4\u590d\u6742\u5ea6O(n^2)&#xff0c;\u6240\u4ee5\u4e0d\u8003\u8651\u3002 <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261031130912-6ae5e878e900b.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> \u89e3\u6cd5\u4e8c&#xff1a;\u5229\u7528\u5355\u8c03\u6027&#xff0c;\u4f7f\u7528\u53cc\u6307\u9488\u7b97\u6cd5\u89e3\u51b3\u95ee\u9898 \u30101\u3011\u5b9a\u4e49\u4e24\u4e2a\u6307\u9488left\u5728\u6700\u5de6\u8fb9&#xff0c;right\u5728\u6700\u53f3\u8fb9 <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261031130913-6ae5e8790cd9a.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> \u30102\u3011\u5c06\u4e24\u6307\u9488\u6240\u5728\u4f4d\u7f6e\u6570\u7ec4\u5143\u7d20\u4e4b\u548c\u4e0etarget\u6bd4\u8f83 \u30103\u3011sum&gt;target&#xff0c;\u5219\u8bf4\u660eright\u548cright\u5de6\u8fb9\u4efb\u610f\u4e00\u6570\u76f8\u52a0\u90fd\u5927\u4e8etarget&#xff0c;\u6240\u4ee5right- &#8211; sum&lt;target&#xff0c;\u5219\u8bf4\u660e&#xff0c;left\u548cleft\u53f3\u8fb9\u4efb\u610f\u4e00\u6570\u76f8\u52a0\u90fd\u5c0f\u4e8etarget&#xff0c;\u6240\u4ee5left&#043;&#043; sum&#061;target,\u8fd4\u56de\u7ed3\u679c <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261031130913-6ae5e87924248.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h4>\u4ee3\u7801\u5b9e\u73b0<\/h4>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Solution<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    vector<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token function\">twoSum<\/span><span class=\"token punctuation\">(<\/span>vector<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token operator\">&amp;<\/span> price<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> target<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">int<\/span> left<span class=\"token operator\">&#061;<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span>right<span class=\"token operator\">&#061;<\/span>price<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">while<\/span><span class=\"token punctuation\">(<\/span>left<span class=\"token operator\">&lt;<\/span>right<span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token keyword\">int<\/span> sum<span class=\"token operator\">&#061;<\/span>price<span class=\"token punctuation\">[<\/span>right<span class=\"token punctuation\">]<\/span><span class=\"token operator\">&#043;<\/span>price<span class=\"token punctuation\">[<\/span>left<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>sum<span class=\"token operator\">&gt;<\/span>target<span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token punctuation\">{<\/span><br \/>\n                right<span class=\"token operator\">&#8212;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n            <span class=\"token keyword\">else<\/span> <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>sum<span class=\"token operator\">&lt;<\/span>target<span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token punctuation\">{<\/span><br \/>\n                left<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n          <span class=\"token keyword\">else<\/span> <span class=\"token keyword\">return<\/span> <span class=\"token punctuation\">{<\/span>price<span class=\"token punctuation\">[<\/span>left<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> price<span class=\"token punctuation\">[<\/span>right<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 keyword\">return<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/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><span class=\"token punctuation\">;<\/span><\/p>\n<h3>7.\u53cc\u6307\u9488_\u4e09\u6570\u4e4b\u548c<\/h3>\n<p>15.\u4e09\u6811\u4e4b\u548c <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261031130913-6ae5e87940869.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h4>\u601d\u8def<\/h4>\n<p>\u89e3\u6cd5\u4e00&#xff1a;\u9996\u5148\u770b\u5230\u8fd9\u4e2a\u9898&#xff0c;\u8fd8\u662f\u4f1a\u5148\u60f3\u5230\u66b4\u529b\u89e3\u6cd5&#xff1a;\u6392\u5e8f&#043;\u66b4\u529b\u679a\u4e3e&#043;set\u53bb\u91cd&#xff0c;\u65f6\u95f4\u590d\u6742\u5ea6O(N^3)&#xff0c;\u7531\u4e8e\u590d\u6742\u5ea6\u592a\u9ad8&#xff0c;\u6240\u4ee5\u4e0d\u8003\u8651\u3002 \u89e3\u6cd5\u4e8c&#xff1a;\u6392\u5e8f&#043;\u53cc\u6307\u9488 \u30101\u3011\u9996\u5148\u5bf9\u8fd9\u4e2a\u6570\u7ec4\u8fdb\u884c\u6392\u5e8f \u30102\u3011\u5176\u6b21\u4ece\u5de6\u5f80\u53f3\u56fa\u5b9a\u4e00\u4e2a\u6570M&#xff0c;\u5728\u8fd9\u4e2a\u6570\u7684\u540e\u9762\u533a\u95f4\u5185\u4f7f\u7528\u53cc\u6307\u9488\u7b97\u6cd5&#xff0c;\u5feb\u901f\u627e\u5230\u4e24\u4e2a\u548c\u4e3a-M\u7684\u6570&#xff08;\u8fd9\u91cc\u53ef\u4ee5\u53c2\u7167\u4e0a\u4e00\u9898\u7684\u601d\u8def&#xff09; <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261031130913-6ae5e879845cb.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> \u30103\u3011\u4f18\u5316&#xff0c;\u6211\u4eec\u5728\u4ece\u5230\u5230\u53f3\u56fa\u5b9aM\u8fd9\u4e2a\u6570\u65f6&#xff0c;\u5982\u679cM&gt;0\u65f6&#xff0c;\u533a\u95f4\u53f3\u8fb9\u7684\u6570\u80af\u5b9a\u4e5f\u90fd\u662f\u5927\u4e8e0\u7684&#xff0c;\u6240\u4ee5\u4e0d\u53ef\u80fd\u627e\u5230\u4e24\u6b63\u6570\u76f8\u52a0\u7b49\u4e8e\u8d1f\u6570\u7684\u60c5\u51b5&#xff0c;\u56e0\u800c\u53ef\u4ee5\u76f4\u63a5\u8df3\u51fa\u5faa\u73af \u30104\u3011\u4f46\u662f\u5728\u5904\u7406\u8fc7\u7a0b\u4e2d\u9700\u8981\u6ce8\u610f\u5230\u4e24\u4e2a\u7ec6\u8282\u95ee\u9898 \u7ec6\u8282\u4e00&#xff1a;\u4e0d\u80fd\u6f0f\u6389\u4efb\u4f55\u4e00\u7ec4\u6570&#xff1a; \u5728\u91c7\u7528\u53cc\u6307\u9488\u7b97\u6cd5\u627etarget\u65f6&#xff0c;\u82e5\u9047\u5230\u4e86\u7b26\u5408\u8981\u6c42\u7684\u4e00\u7ec4\u6570&#xff0c;\u4e0d\u80fd\u50cf\u4e0a\u4e00\u9898\u4e00\u6837\u76f4\u63a5\u8fd4\u56de\u8fd9\u7ec4\u6570&#xff0c;\u800c\u662f\u5c06\u5176\u5b58\u8d77\u6765&#xff0c;\u7136\u540eleft&#043;&#043;&#xff0c;right- -\u7ee7\u7eed\u5bfb\u627e\u4e0b\u4e00\u7ec4\u6570&#xff0c;\u76f4\u5230left&gt;&#061;right \u7ec6\u8282\u4e8c&#xff1a;\u53bb\u91cd&#xff1a; \u3010\u53bb\u91cd1\u3011&#xff0c;\u9898\u76ee\u4e2d\u8981\u6c42\u4e0d\u53ef\u5305\u542b\u91cd\u590d\u7684\u4e09\u5143\u7ec4&#xff0c;\u6240\u4ee5\u5728\u627e\u5230\u9898\u76ee\u8981\u6c42\u7684\u4e00\u7ec4\u6570\u8fdb\u884cleft&#043;&#043;\u548cright- -\u4e4b\u540e\u8fd8\u9700\u8981\u5224\u65ad\u662f\u5426\u91cd\u590d&#xff0c;\u91cd\u590d\u5219\u7ee7\u7eedleft&#043;&#043;\u6216\u8005right\u2013\u8df3\u8fc7\u91cd\u590d\u5143\u7d20\u3002\u5982\u56fe&#xff1a; <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261031130913-6ae5e879a72e0.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> \u3010\u53bb\u91cd2\u3011\u4e0d\u4ec5M\u540e\u9762\u533a\u95f4\u7684\u6570\u8981\u53bb\u91cd&#xff0c;M\u672c\u8eab\u5728\u52a0\u52a0\u7684\u8fc7\u7a0b\u4e2d\u4e5f\u9700\u8981\u53bb\u91cd\u3002\u5982\u56fe&#xff1a; <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261031130913-6ae5e879cfabd.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> \u7ec6\u8282\u4e09&#xff1a;\u9632\u6b62\u8d8a\u754c\u8bbf\u95ee&#xff1a; \u5728\u5904\u7406\u4e0a\u8ff0\u53bb\u91cd\u95ee\u9898\u65f6&#xff0c;\u8981\u9632\u6b62left&#043;&#043;\u76f4\u81f3\u8d8a\u754c\u7684\u95ee\u9898&#xff1b;\u8fd8\u8981\u9632\u6b62M\u5728\u53bb\u91cd\u8fc7\u7a0b\u4e2d&#xff0c;\u4e00\u76f4&#043;&#043;\u5bfc\u81f4\u8d8a\u754c\u7684\u95ee\u9898\u3002 \u4f9d\u636e\u4e0a\u8ff0\u601d\u8def&#xff0c;\u4e0b\u9762\u6765\u5199\u4ee3\u7801&#xff1a;<\/p>\n<h4>\u4ee3\u7801\u5b9e\u73b0<\/h4>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Solution<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    vector<span class=\"token operator\">&lt;<\/span>vector<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;&gt;<\/span> <span class=\"token function\">threeSum<\/span><span class=\"token punctuation\">(<\/span>vector<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token operator\">&amp;<\/span> nums<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/\u30101\u3011\u9996\u5148\u5bf9\u6570\u7ec4\u8fdb\u884c\u6392\u5e8f<\/span><br \/>\n        std<span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">sort<\/span><span class=\"token punctuation\">(<\/span>nums<span class=\"token punctuation\">.<\/span><span class=\"token function\">begin<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> nums<span class=\"token punctuation\">.<\/span><span class=\"token function\">end<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/\u5229\u7528ans\u6765\u5b58\u50a8\u7ed3\u679c<\/span><br \/>\n        vector<span class=\"token operator\">&lt;<\/span>vector<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;&gt;<\/span> ans<span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/\u5229\u7528for\u5faa\u73af&#xff0c;\u56fa\u5b9aM<\/span><br \/>\n        <span class=\"token keyword\">for<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> M<span class=\"token operator\">&#061;<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span>M<span class=\"token operator\">&lt;<\/span>nums<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/\u30103\u3011\u4f18\u5316&#xff1a;<\/span><br \/>\n            <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>nums<span class=\"token punctuation\">[<\/span>M<span class=\"token punctuation\">]<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">break<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">int<\/span> target<span class=\"token operator\">&#061;<\/span><span class=\"token operator\">&#8211;<\/span>nums<span class=\"token punctuation\">[<\/span>M<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">int<\/span> left<span class=\"token operator\">&#061;<\/span>M<span class=\"token operator\">&#043;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span>right<span class=\"token operator\">&#061;<\/span>nums<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token comment\">\/\/\u30102\u3011\u53cc\u6307\u9488\u7b97\u6cd5<\/span><br \/>\n            <span class=\"token keyword\">while<\/span><span class=\"token punctuation\">(<\/span>left<span class=\"token operator\">&lt;<\/span>right<span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token punctuation\">{<\/span><br \/>\n              <span class=\"token keyword\">int<\/span> sum<span class=\"token operator\">&#061;<\/span>nums<span class=\"token punctuation\">[<\/span>left<span class=\"token punctuation\">]<\/span><span class=\"token operator\">&#043;<\/span>nums<span class=\"token punctuation\">[<\/span>right<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n              <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>sum<span class=\"token operator\">&gt;<\/span>target<span class=\"token punctuation\">)<\/span> right<span class=\"token operator\">&#8212;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n              <span class=\"token keyword\">else<\/span> <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>sum<span class=\"token operator\">&lt;<\/span>target<span class=\"token punctuation\">)<\/span> left<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n              <span class=\"token keyword\">else<\/span><span class=\"token punctuation\">{<\/span><br \/>\n                  ans<span class=\"token punctuation\">.<\/span><span class=\"token function\">push_back<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span>nums<span class=\"token punctuation\">[<\/span>M<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span>nums<span class=\"token punctuation\">[<\/span>left<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span>nums<span class=\"token punctuation\">[<\/span>right<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                  <span class=\"token comment\">\/\/\u7ec6\u8282\u4e00&#xff1a;\u4e0d\u80fd\u6f0f\u6389\u4efb\u4f55\u4e00\u7ec4\u6570<\/span><br \/>\n                  left<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">,<\/span>right<span class=\"token operator\">&#8212;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                  <span class=\"token comment\">\/\/\u7ec6\u8282\u4e09&#xff1a;\u9632\u6b62\u8d8a\u754c\u8bbf\u95ee  &amp;&amp;  \u7ec6\u8282\u4e8c&#xff1a;M\u540e\u7684\u533a\u95f4left&#xff0c;right\u53bb\u91cd\u95ee\u9898\u89e3\u51b3  <\/span><br \/>\n                 <span class=\"token keyword\">while<\/span><span class=\"token punctuation\">(<\/span>left<span class=\"token operator\">&lt;<\/span>right<span class=\"token operator\">&amp;&amp;<\/span>nums<span class=\"token punctuation\">[<\/span>left<span class=\"token punctuation\">]<\/span><span class=\"token operator\">&#061;&#061;<\/span>nums<span class=\"token punctuation\">[<\/span>left<span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span> left<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                 <span class=\"token keyword\">while<\/span><span class=\"token punctuation\">(<\/span>left<span class=\"token operator\">&lt;<\/span>right<span class=\"token operator\">&amp;&amp;<\/span>nums<span class=\"token punctuation\">[<\/span>right<span class=\"token punctuation\">]<\/span><span class=\"token operator\">&#061;&#061;<\/span>nums<span class=\"token punctuation\">[<\/span>right<span class=\"token operator\">&#043;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span> right<span class=\"token operator\">&#8212;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                <span class=\"token punctuation\">}<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n            M<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token comment\">\/\/\u7ec6\u8282\u4e09&#xff1a;\u9632\u6b62M\u51fa\u73b0\u8d8a\u754c\u8bbf\u95ee  &amp;&amp;  \u7ec6\u8282\u4e8c&#xff1a;M&#043;&#043;\u540e\u7684\u53bb\u91cd\u95ee\u9898\u89e3\u51b3  <\/span><br \/>\n            <span class=\"token keyword\">while<\/span><span class=\"token punctuation\">(<\/span>M<span class=\"token operator\">&lt;<\/span>nums<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token operator\">&amp;&amp;<\/span>nums<span class=\"token punctuation\">[<\/span>M<span class=\"token punctuation\">]<\/span><span class=\"token operator\">&#061;&#061;<\/span>nums<span class=\"token punctuation\">[<\/span>M<span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span> M<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> ans<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h3>8.\u53cc\u6307\u9488_\u56db\u6570\u4e4b\u548c<\/h3>\n<p>18.\u56db\u6570\u4e4b\u548c <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261031130913-6ae5e879f2250.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h4>\u601d\u8def<\/h4>\n<p>\u89e3\u6cd5\u4e00&#xff1a;\u6392\u5e8f&#043;\u66b4\u529b\u679a\u4e3e&#043;set\u53bb\u91cd&#xff0c;\u7531\u4e8e\u65f6\u95f4\u590d\u6742\u5ea6\u8fc7\u5927\u8d85\u51fa\u65f6\u95f4\u9650\u5236&#xff0c;\u56e0\u800c\u4e0d\u8003\u8651 \u89e3\u6cd5\u4e8c&#xff1a;\u548c\u4e0a\u4e00\u9898\u4e09\u6570\u4e4b\u548c\u9898\u89e3\u601d\u8def\u76f8\u540c&#xff0c;\u6392\u5e8f&#043;\u53cc\u6307\u9488 \u30101\u3011\u6392\u5e8f \u30102\u3011\u4ece\u5de6\u5f80\u53f3\u4f9d\u6b21\u5148\u56fa\u5b9a\u4e00\u4e2a\u6570a\u3002 \u7136\u540e\u5c06\u540e\u9762\u7684\u6570\u6309\u7167\u6c42\u4e09\u4e2a\u6570\u4e4b\u548c\u7684\u601d\u8def&#xff1a;\u56fa\u5b9a\u4e00\u4e2a\u6570b&#xff0c;\u5c06\u540e\u9762\u533a\u95f4\u7684\u6570\u8fd0\u7528\u53cc\u6307\u9488\u7b97\u6cd5&#xff0c;\u627e\u51fa\u76ee\u6807\u503c\u3002\u5982\u56fe&#xff1a; <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261031130914-6ae5e87a1f50b.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> \u5f53a\u540e\u9762\u7684\u6570\u627e\u5b8c\u4e00\u8f6e\u76ee\u6807\u503c\u65f6&#xff0c;a\u7ee7\u7eed&#043;&#043;&#xff0c;\u800c\u540e\u7ee7\u7eed\u91cd\u590d\u4e0a\u8ff0\u6b65\u9aa4\u3002 \u30103\u3011\u540c\u65f6\u4e0d\u8981\u5fd8\u8bb0\u540c\u6837\u7684\u7ec6\u8282\u95ee\u9898&#xff1a;\u4e0d\u6f0f\u6389\u4efb\u4f55\u4e00\u7ec4\u6570&#xff0c;a&#xff0c;b&#xff0c;L&#xff0c;R\u53bb\u91cd&#xff0c;\u9632\u6b62\u8d8a\u754c\u95ee\u9898<\/p>\n<h4>\u4ee3\u7801\u5b9e\u73b0<\/h4>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Solution<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    vector<span class=\"token operator\">&lt;<\/span>vector<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;&gt;<\/span> <span class=\"token function\">fourSum<\/span><span class=\"token punctuation\">(<\/span>vector<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token operator\">&amp;<\/span> nums<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> target<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        vector<span class=\"token operator\">&lt;<\/span>vector<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;&gt;<\/span> ans<span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/\u6392\u5e8f<\/span><br \/>\n        std<span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">sort<\/span><span class=\"token punctuation\">(<\/span>nums<span class=\"token punctuation\">.<\/span><span class=\"token function\">begin<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>nums<span class=\"token punctuation\">.<\/span><span class=\"token function\">end<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/\u7528for\u5faa\u73af\u5d4c\u5957<\/span><br \/>\n        <span class=\"token keyword\">for<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> a<span class=\"token operator\">&#061;<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span>a<span class=\"token operator\">&lt;<\/span>nums<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token keyword\">int<\/span> n<span class=\"token operator\">&#061;<\/span>nums<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/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> b<span class=\"token operator\">&#061;<\/span>a<span class=\"token operator\">&#043;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span>b<span class=\"token operator\">&lt;<\/span>nums<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token keyword\">int<\/span> target1<span class=\"token operator\">&#061;<\/span>target<span class=\"token operator\">&#8211;<\/span>nums<span class=\"token punctuation\">[<\/span>a<span class=\"token punctuation\">]<\/span><span class=\"token operator\">&#8211;<\/span>nums<span class=\"token punctuation\">[<\/span>b<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                <span class=\"token keyword\">int<\/span> L<span class=\"token operator\">&#061;<\/span>b<span class=\"token operator\">&#043;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span>R<span class=\"token operator\">&#061;<\/span>n<span class=\"token punctuation\">;<\/span><br \/>\n                <span class=\"token keyword\">while<\/span><span class=\"token punctuation\">(<\/span>L<span class=\"token operator\">&lt;<\/span>R<span class=\"token punctuation\">)<\/span><br \/>\n                <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token comment\">\/\/\u53cc\u6307\u9488\u7b97\u6cd5&#xff0c;\u627e\u76ee\u6807\u503c<\/span><br \/>\n                   <span class=\"token keyword\">int<\/span> sum<span class=\"token operator\">&#061;<\/span>nums<span class=\"token punctuation\">[<\/span>L<span class=\"token punctuation\">]<\/span><span class=\"token operator\">&#043;<\/span>nums<span class=\"token punctuation\">[<\/span>R<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                  <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>sum<span class=\"token operator\">&lt;<\/span>target1<span class=\"token punctuation\">)<\/span> L<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                  <span class=\"token keyword\">else<\/span> <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>sum<span class=\"token operator\">&gt;<\/span>target1<span class=\"token punctuation\">)<\/span> R<span class=\"token operator\">&#8212;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                  <span class=\"token keyword\">else<\/span><span class=\"token punctuation\">{<\/span><br \/>\n                      ans<span class=\"token punctuation\">.<\/span><span class=\"token function\">push_back<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span>nums<span class=\"token punctuation\">[<\/span>a<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span>nums<span class=\"token punctuation\">[<\/span>b<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span>nums<span class=\"token punctuation\">[<\/span>L<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span>nums<span class=\"token punctuation\">[<\/span>R<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                      <span class=\"token comment\">\/\/\u4e0d\u6f0f\u6389\u4efb\u4f55\u4e00\u7ec4\u6570&#xff0c;\u7ee7\u7eedL&#043;&#043;&#xff0c;R&#8211;<\/span><br \/>\n                      L<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">,<\/span>R<span class=\"token operator\">&#8212;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                      <span class=\"token keyword\">while<\/span><span class=\"token punctuation\">(<\/span>L<span class=\"token operator\">&lt;<\/span>R<span class=\"token operator\">&amp;&amp;<\/span>nums<span class=\"token punctuation\">[<\/span>L<span class=\"token punctuation\">]<\/span><span class=\"token operator\">&#061;&#061;<\/span>nums<span class=\"token punctuation\">[<\/span>L<span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span> L<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/L\u53bb\u91cd<\/span><br \/>\n                      <span class=\"token keyword\">while<\/span><span class=\"token punctuation\">(<\/span>L<span class=\"token operator\">&lt;<\/span>R<span class=\"token operator\">&amp;&amp;<\/span>nums<span class=\"token punctuation\">[<\/span>R<span class=\"token punctuation\">]<\/span><span class=\"token operator\">&#061;&#061;<\/span>nums<span class=\"token punctuation\">[<\/span>R<span class=\"token operator\">&#043;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span> R<span class=\"token operator\">&#8212;<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/R\u53bb\u91cd<\/span><br \/>\n                      <span class=\"token punctuation\">}<\/span><br \/>\n                <span class=\"token punctuation\">}<\/span><br \/>\n                b<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                <span class=\"token keyword\">while<\/span><span class=\"token punctuation\">(<\/span>b<span class=\"token operator\">&lt;<\/span>n<span class=\"token operator\">&amp;&amp;<\/span>nums<span class=\"token punctuation\">[<\/span>b<span class=\"token punctuation\">]<\/span><span class=\"token operator\">&#061;&#061;<\/span>nums<span class=\"token punctuation\">[<\/span>b<span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span> b<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/b\u53bb\u91cd<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n            a<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">while<\/span><span class=\"token punctuation\">(<\/span>a<span class=\"token operator\">&lt;<\/span>n<span class=\"token operator\">&amp;&amp;<\/span>nums<span class=\"token punctuation\">[<\/span>a<span class=\"token punctuation\">]<\/span><span class=\"token operator\">&#061;&#061;<\/span>nums<span class=\"token punctuation\">[<\/span>a<span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span> a<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/a\u53bb\u91cd<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> ans<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u6b64\u65f6\u6211\u4eec\u63d0\u4ea4\u4ee3\u7801\u4e4b\u540e\u4f1a\u53d1\u73b0\u51fa\u73b0\u6ea2\u51fa\u7684\u9519\u8bef&#xff0c;\u8fd9\u662f\u7531\u4e8etarget1\u8fc7\u5927\u5bfc\u81f4int\u65e0\u6cd5\u88c5\u4e0b&#xff0c;\u6b64\u65f6\u6211\u4eec\u5c31\u53ef\u4ee5\u6362\u4e0along long\u7c7b\u578b <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261031130914-6ae5e87a46d17.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> \u5c06int target1&#061;target-nums[a]-nums[b];\u8fd9\u53e5\u6362\u6210 long long target1&#061;(long long)target-nums[a]-nums[b];\u8fd9\u65f6\u5c31\u53ef\u4ee5\u63d0\u4ea4\u901a\u8fc7\u5566&#xff01;\u8fd9\u65f6\u5019\u65f6\u95f4\u590d\u6742\u5ea6\u4e3aO&#xff08;N^3&#xff09;<\/p>\n<p><font color=\"#7766DB\" size=\"4\" 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