{"id":118642,"date":"2026-10-27T22:16:38","date_gmt":"2026-10-27T14:16:38","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/118642.html"},"modified":"2026-10-27T22:16:38","modified_gmt":"2026-10-27T14:16:38","slug":"c-dictionary-%e4%bb%8e%e9%9b%b6%e5%85%a5%e9%97%a8%ef%bc%9a%e5%88%9d%e5%ad%a6%e8%80%85%e5%bf%85%e7%9c%8b%e7%9a%84%e9%94%ae%e5%80%bc%e5%af%b9%e5%ae%8c%e5%85%a8%e6%8c%87%e5%8d%97","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/118642.html","title":{"rendered":"C# Dictionary \u4ece\u96f6\u5165\u95e8\uff1a\u521d\u5b66\u8005\u5fc5\u770b\u7684\u952e\u503c\u5bf9\u5b8c\u5168\u6307\u5357"},"content":{"rendered":"<h2>C# Dictionary \u4ece\u96f6\u5165\u95e8&#xff1a;\u521d\u5b66\u8005\u5fc5\u770b\u7684\u952e\u503c\u5bf9\u5b8c\u5168\u6307\u5357<\/h2>\n<p>\u5173\u952e\u8bcd&#xff1a;C# Dictionary\u3001C# \u5b57\u5178\u3001Dictionary \u7528\u6cd5\u3001\u952e\u503c\u5bf9\u96c6\u5408\u3001.NET \u65b0\u624b\u6559\u7a0b<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261027141635-6ae0b24348e18.png\" alt=\"\u8bf7\u6dfb\u52a0\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<hr \/>\n<h3>\u524d\u8a00&#xff1a;\u4e3a\u4ec0\u4e48\u4f60\u4e00\u5b9a\u8981\u638c\u63e1 Dictionary&#xff1f;<\/h3>\n<p>\u5982\u679c\u4f60\u5199\u8fc7 C# \u4ee3\u7801&#xff0c;\u5927\u6982\u7387\u7528\u8fc7 List&lt;T&gt;\u3002\u4f46\u5f53\u4f60\u9700\u8981\u901a\u8fc7\u67d0\u4e2a&#034;\u540d\u5b57&#034;\u5feb\u901f\u627e\u5230\u5bf9\u5e94\u7684\u6570\u636e\u65f6&#xff0c;List \u5c31\u5f00\u59cb\u529b\u4e0d\u4ece\u5fc3\u4e86\u2014\u2014\u4f60\u5f97\u5faa\u73af\u904d\u5386\u6bcf\u4e00\u4e2a\u5143\u7d20&#xff0c;\u4e00\u4e2a\u4e2a\u6bd4\u5bf9&#xff0c;\u6570\u636e\u91cf\u4e00\u5927&#xff0c;\u6027\u80fd\u76f4\u63a5\u62c9\u80ef\u3002<\/p>\n<p>\u8fd9\u65f6\u5019&#xff0c;Dictionary&lt;TKey, TValue&gt;&#xff08;\u5b57\u5178&#xff09;\u5c31\u767b\u573a\u4e86\u3002\u5b83\u662f C# \u4e2d\u6700\u5e38\u7528\u3001\u4e5f\u6700\u5b9e\u7528\u7684\u96c6\u5408\u7c7b\u578b\u4e4b\u4e00&#xff0c;\u51e0\u4e4e\u6240\u6709\u7a0d\u5fae\u590d\u6742\u4e00\u70b9\u7684\u9879\u76ee\u91cc\u90fd\u80fd\u770b\u5230\u5b83\u7684\u8eab\u5f71\u3002<\/p>\n<p>\u8fd9\u7bc7\u6587\u7ae0\u9762\u5411\u96f6\u57fa\u7840\u521d\u5b66\u8005&#xff0c;\u7528\u6700\u901a\u4fd7\u7684\u8bed\u8a00\u628a Dictionary \u8bb2\u900f&#xff0c;\u770b\u5b8c\u4f60\u5c31\u80fd\u5728\u5b9e\u9645\u9879\u76ee\u91cc\u7528\u8d77\u6765\u3002<\/p>\n<hr \/>\n<h3>\u4e00\u3001Dictionary \u5230\u5e95\u662f\u4ec0\u4e48&#xff1f;<\/h3>\n<p>\u5148\u522b\u6025\u7740\u770b\u5b98\u65b9\u5b9a\u4e49&#xff0c;\u6211\u4eec\u7528\u751f\u6d3b\u4e2d\u7684\u4f8b\u5b50\u6765\u7406\u89e3\u3002<\/p>\n<p>\u60f3\u8c61\u4e00\u672c\u901a\u8baf\u5f55&#xff1a;\u4f60\u60f3\u627e\u67d0\u4e2a\u4eba\u7684\u7535\u8bdd&#xff0c;\u4e0d\u662f\u4ece\u7b2c\u4e00\u9875\u5f00\u59cb\u4e00\u9875\u4e00\u9875\u7ffb&#xff0c;\u800c\u662f\u76f4\u63a5\u6309\u540d\u5b57\u67e5\u5230\u5bf9\u5e94\u7684\u90a3\u4e00\u9875&#xff0c;\u7136\u540e\u8bfb\u51fa\u7535\u8bdd\u53f7\u7801\u3002<\/p>\n<p>Dictionary \u5c31\u662f\u8fd9\u6837\u4e00\u672c&#034;\u901a\u8baf\u5f55&#034;&#xff1a;<\/p>\n<ul>\n<li>\u952e&#xff08;Key&#xff09;&#xff1a;\u901a\u8baf\u5f55\u91cc\u7684\u540d\u5b57&#xff0c;\u6bd4\u5982 \u201c\u5f20\u4e09\u201d<\/li>\n<li>\u503c&#xff08;Value&#xff09;&#xff1a;\u5bf9\u5e94\u7684\u7535\u8bdd\u53f7\u7801&#xff0c;\u6bd4\u5982 \u201c138xxxx1234\u201d<\/li>\n<li>\u952e\u503c\u5bf9&#xff08;Key-Value Pair&#xff09;&#xff1a;\u540d\u5b57\u548c\u53f7\u7801\u662f\u7ed1\u5b9a\u5728\u4e00\u8d77\u7684\u4e00\u5bf9<\/li>\n<\/ul>\n<p>\u5b83\u7684\u6838\u5fc3\u7279\u70b9\u5c31\u662f&#xff1a;\u901a\u8fc7\u952e\u53ef\u4ee5\u5feb\u901f\u627e\u5230\u5bf9\u5e94\u7684\u503c&#xff0c;\u67e5\u627e\u65f6\u95f4\u51e0\u4e4e\u662f\u5e38\u6570\u7ea7\u7684&#xff08;O(1)&#xff09;&#xff0c;\u4e0d\u7528\u50cf List \u90a3\u6837\u4ece\u5934\u5230\u5c3e\u904d\u5386\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261027141636-6ae0b24404947.png\" alt=\"\u8bf7\u6dfb\u52a0\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h4>\u5173\u952e\u7279\u6027\u4e00\u89c8<\/h4>\n<table>\n<tr>\u7279\u6027\u8bf4\u660e<\/tr>\n<tbody>\n<tr>\n<td>\u952e\u552f\u4e00<\/td>\n<td>\u540c\u4e00\u4e2a\u5b57\u5178\u91cc\u4e0d\u80fd\u6709\u4e24\u4e2a\u76f8\u540c\u7684\u952e<\/td>\n<\/tr>\n<tr>\n<td>\u67e5\u627e\u5feb<\/td>\n<td>\u901a\u8fc7\u952e\u53d6\u503c&#xff0c;\u6027\u80fd\u63a5\u8fd1\u5e38\u6570\u65f6\u95f4<\/td>\n<\/tr>\n<tr>\n<td>\u6cdb\u578b\u652f\u6301<\/td>\n<td>\u952e\u548c\u503c\u7684\u7c7b\u578b\u53ef\u4ee5\u4efb\u610f\u6307\u5b9a<\/td>\n<\/tr>\n<tr>\n<td>\u5141\u8bb8\u7a7a\u503c<\/td>\n<td>\u503c\u53ef\u4ee5\u4e3a null&#xff0c;\u4f46\u952e\u4e0d\u80fd\u4e3a null&#xff08;\u5f15\u7528\u7c7b\u578b&#xff09;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr \/>\n<h3>\u4e8c\u3001\u521b\u5efa\u548c\u521d\u59cb\u5316 Dictionary<\/h3>\n<h4>2.1 \u6700\u57fa\u672c\u7684\u521b\u5efa\u65b9\u5f0f<\/h4>\n<p><span class=\"token comment\">\/\/ \u521b\u5efa\u4e00\u4e2a\u952e\u4e3a string\u3001\u503c\u4e3a int \u7684\u5b57\u5178<\/span><br \/>\n<span class=\"token class-name\">Dictionary<span class=\"token punctuation\">&lt;<\/span><span class=\"token keyword\">string<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> studentScores <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">Dictionary<span class=\"token punctuation\">&lt;<\/span><span class=\"token keyword\">string<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u8fd9\u884c\u4ee3\u7801\u7684\u610f\u601d\u662f&#xff1a;\u6211\u8981\u5efa\u4e00\u4e2a\u5b57\u5178&#xff0c;\u952e\u7684\u7c7b\u578b\u662f\u5b57\u7b26\u4e32&#xff08;\u5b66\u751f\u540d\u5b57&#xff09;&#xff0c;\u503c\u7684\u7c7b\u578b\u662f\u6574\u6570&#xff08;\u8003\u8bd5\u5206\u6570&#xff09;\u3002<\/p>\n<h4>2.2 \u5e26\u521d\u59cb\u6570\u636e\u7684\u521b\u5efa<\/h4>\n<p><span class=\"token class-name\">Dictionary<span class=\"token punctuation\">&lt;<\/span><span class=\"token keyword\">string<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> studentScores <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">Dictionary<span class=\"token punctuation\">&lt;<\/span><span class=\"token keyword\">string<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span><span class=\"token punctuation\">&gt;<\/span><\/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 string\">&#034;\u5f20\u4e09&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">90<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span> <span class=\"token string\">&#034;\u674e\u56db&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">85<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span> <span class=\"token string\">&#034;\u738b\u4e94&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">95<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u6ce8\u610f\u8fd9\u4e2a\u8bed\u6cd5&#xff1a;\u6bcf\u4e00\u7ec4\u952e\u503c\u5bf9\u7528\u5927\u62ec\u53f7\u5305\u8d77\u6765&#xff0c;\u9017\u53f7\u5206\u9694\u3002<\/p>\n<h4>2.3 \u96c6\u5408\u521d\u59cb\u5316\u5668&#xff08;\u66f4\u7b80\u6d01\u7684\u5199\u6cd5&#xff09;<\/h4>\n<p>C# 6.0 \u4ee5\u540e\u652f\u6301\u66f4\u76f4\u89c2\u7684\u5199\u6cd5&#xff1a;<\/p>\n<p><span class=\"token class-name\">Dictionary<span class=\"token punctuation\">&lt;<\/span><span class=\"token keyword\">string<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> studentScores <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">Dictionary<span class=\"token punctuation\">&lt;<\/span><span class=\"token keyword\">string<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span><span class=\"token punctuation\">&gt;<\/span><\/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 string\">&#034;\u5f20\u4e09&#034;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">90<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;\u674e\u56db&#034;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">85<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;\u738b\u4e94&#034;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">95<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u8fd9\u79cd\u5199\u6cd5\u66f4\u63a5\u8fd1&#034;\u8d4b\u503c&#034;\u7684\u611f\u89c9&#xff0c;\u63a8\u8350\u65e5\u5e38\u4f7f\u7528\u3002<\/p>\n<hr \/>\n<h3>\u4e09\u3001\u589e\u5220\u6539\u67e5&#xff1a;\u6700\u5e38\u7528\u7684\u56db\u4e2a\u64cd\u4f5c<\/h3>\n<p>\u8fd9\u662f Dictionary \u7684\u6838\u5fc3&#xff0c;\u5fc5\u987b\u70c2\u719f\u4e8e\u5fc3\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261027141636-6ae0b24450b53.png\" alt=\"\u8bf7\u6dfb\u52a0\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h4>3.1 \u6dfb\u52a0\u5143\u7d20&#xff1a;Add \u65b9\u6cd5<\/h4>\n<p><span class=\"token class-name\">Dictionary<span class=\"token punctuation\">&lt;<\/span><span class=\"token keyword\">string<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> scores <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">Dictionary<span class=\"token punctuation\">&lt;<\/span><span class=\"token keyword\">string<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u6dfb\u52a0\u4e00\u4e2a\u952e\u503c\u5bf9<\/span><br \/>\nscores<span class=\"token punctuation\">.<\/span><span class=\"token function\">Add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u8d75\u516d&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">88<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u5982\u679c\u952e\u5df2\u7ecf\u5b58\u5728&#xff0c;Add \u4f1a\u629b\u51fa\u5f02\u5e38&#xff01;<\/span><br \/>\nscores<span class=\"token punctuation\">.<\/span><span class=\"token function\">Add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u8d75\u516d&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">99<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u8fd0\u884c\u65f6\u62a5\u9519&#xff1a;ArgumentException<\/span><\/p>\n<p>\u65b0\u624b\u6ce8\u610f&#xff1a;\u7528 Add \u6dfb\u52a0\u4e4b\u524d&#xff0c;\u4e00\u5b9a\u8981\u5148\u786e\u8ba4\u8fd9\u4e2a\u952e\u4e0d\u5b58\u5728&#xff0c;\u5426\u5219\u4f1a\u76f4\u63a5\u629b\u5f02\u5e38\u3002<\/p>\n<p>\u66f4\u5b89\u5168\u7684\u5199\u6cd5\u662f\u7528\u7d22\u5f15\u5668&#xff1a;<\/p>\n<p><span class=\"token comment\">\/\/ \u952e\u4e0d\u5b58\u5728\u5c31\u6dfb\u52a0&#xff0c;\u5b58\u5728\u5c31\u8986\u76d6<\/span><br \/>\nscores<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;\u8d75\u516d&#034;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">88<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h4>3.2 \u83b7\u53d6\u5143\u7d20&#xff1a;\u901a\u8fc7\u952e\u53d6\u503c<\/h4>\n<p><span class=\"token comment\">\/\/ \u65b9\u5f0f\u4e00&#xff1a;\u76f4\u63a5\u7528\u7d22\u5f15\u5668&#xff08;\u952e\u4e0d\u5b58\u5728\u4f1a\u629b\u5f02\u5e38&#xff09;<\/span><br \/>\n<span class=\"token class-name\"><span class=\"token keyword\">int<\/span><\/span> score <span class=\"token operator\">&#061;<\/span> scores<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;\u5f20\u4e09&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u65b9\u5f0f\u4e8c&#xff1a;TryGetValue&#xff08;\u63a8\u8350&#xff0c;\u66f4\u5b89\u5168&#xff09;<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>scores<span class=\"token punctuation\">.<\/span><span class=\"token function\">TryGetValue<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u5f20\u4e09&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">out<\/span> <span class=\"token class-name\"><span class=\"token keyword\">int<\/span><\/span> zhangsanScore<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    Console<span class=\"token punctuation\">.<\/span><span class=\"token function\">WriteLine<\/span><span class=\"token punctuation\">(<\/span><span class=\"token interpolation-string\"><span class=\"token string\">$&#034;\u5f20\u4e09\u7684\u5206\u6570\u662f&#xff1a;<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span><span class=\"token expression language-csharp\">zhangsanScore<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">else<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    Console<span class=\"token punctuation\">.<\/span><span class=\"token function\">WriteLine<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u6ca1\u627e\u5230\u5f20\u4e09\u7684\u6210\u7ee9&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u5f3a\u70c8\u63a8\u8350 TryGetValue&#xff1a;\u5b83\u4e0d\u4f1a\u56e0\u4e3a\u952e\u4e0d\u5b58\u5728\u5c31\u5d29\u6e83&#xff0c;\u800c\u662f\u8fd4\u56de\u4e00\u4e2a\u5e03\u5c14\u503c\u544a\u8bc9\u4f60\u6709\u6ca1\u6709\u627e\u5230\u3002\u5199\u4ee3\u7801\u7684\u65f6\u5019&#xff0c;\u5b89\u5168\u6c38\u8fdc\u6bd4\u65b9\u4fbf\u91cd\u8981\u3002<\/p>\n<h4>3.3 \u4fee\u6539\u5143\u7d20<\/h4>\n<p>\u4fee\u6539\u5176\u5b9e\u548c\u6dfb\u52a0\u7528\u7684\u662f\u540c\u4e00\u4e2a\u8bed\u6cd5\u2014\u2014\u7d22\u5f15\u5668\u8d4b\u503c&#xff1a;<\/p>\n<p><span class=\"token comment\">\/\/ \u5f20\u4e09\u8003\u4e8690\u5206&#xff0c;\u540e\u6765\u53d1\u73b0\u6539\u9519\u4e86&#xff0c;\u5b9e\u9645\u662f95\u5206<\/span><br \/>\nscores<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;\u5f20\u4e09&#034;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">95<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h4>3.4 \u5220\u9664\u5143\u7d20&#xff1a;Remove \u65b9\u6cd5<\/h4>\n<p><span class=\"token comment\">\/\/ \u5220\u9664\u6307\u5b9a\u952e\u7684\u5143\u7d20<\/span><br \/>\n<span class=\"token class-name\"><span class=\"token keyword\">bool<\/span><\/span> removed <span class=\"token operator\">&#061;<\/span> scores<span class=\"token punctuation\">.<\/span><span class=\"token function\">Remove<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u674e\u56db&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>removed<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    Console<span class=\"token punctuation\">.<\/span><span class=\"token function\">WriteLine<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u674e\u56db\u7684\u6210\u7ee9\u5df2\u5220\u9664&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">else<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    Console<span class=\"token punctuation\">.<\/span><span class=\"token function\">WriteLine<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u6ca1\u627e\u5230\u674e\u56db&#xff0c;\u5220\u4e0d\u6389&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>Remove \u4f1a\u8fd4\u56de\u4e00\u4e2a bool&#xff0c;\u8868\u793a\u662f\u5426\u771f\u7684\u5220\u6389\u4e86\u4e1c\u897f\u3002<\/p>\n<h4>3.5 \u6e05\u7a7a\u6574\u4e2a\u5b57\u5178<\/h4>\n<p>scores<span class=\"token punctuation\">.<\/span><span class=\"token function\">Clear<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u4e00\u952e\u6e05\u7a7a&#xff0c;\u5565\u90fd\u4e0d\u5269<\/span><\/p>\n<hr \/>\n<h3>\u56db\u3001\u904d\u5386 Dictionary \u7684\u51e0\u79cd\u59ff\u52bf<\/h3>\n<h4>4.1 \u904d\u5386\u6240\u6709\u952e\u503c\u5bf9&#xff08;\u6700\u5e38\u7528&#xff09;<\/h4>\n<p><span class=\"token keyword\">foreach<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">KeyValuePair<span class=\"token punctuation\">&lt;<\/span><span class=\"token keyword\">string<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> item <span class=\"token keyword\">in<\/span> scores<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    Console<span class=\"token punctuation\">.<\/span><span class=\"token function\">WriteLine<\/span><span class=\"token punctuation\">(<\/span><span class=\"token interpolation-string\"><span class=\"token string\">$&#034;<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span><span class=\"token expression language-csharp\">item<span class=\"token punctuation\">.<\/span>Key<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#xff1a;<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span><span class=\"token expression language-csharp\">item<span class=\"token punctuation\">.<\/span>Value<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">\u5206&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>4.2 \u53ea\u904d\u5386\u952e<\/h4>\n<p><span class=\"token keyword\">foreach<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\"><span class=\"token keyword\">string<\/span><\/span> name <span class=\"token keyword\">in<\/span> scores<span class=\"token punctuation\">.<\/span>Keys<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    Console<span class=\"token punctuation\">.<\/span><span class=\"token function\">WriteLine<\/span><span class=\"token punctuation\">(<\/span>name<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>4.3 \u53ea\u904d\u5386\u503c<\/h4>\n<p><span class=\"token keyword\">foreach<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\"><span class=\"token keyword\">int<\/span><\/span> score <span class=\"token keyword\">in<\/span> scores<span class=\"token punctuation\">.<\/span>Values<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    Console<span class=\"token punctuation\">.<\/span><span class=\"token function\">WriteLine<\/span><span class=\"token punctuation\">(<\/span>score<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>4.4 \u7528 var \u7b80\u5316\u5199\u6cd5<\/h4>\n<p>\u5b9e\u9645\u9879\u76ee\u91cc\u5927\u5bb6\u90fd\u559c\u6b22\u8fd9\u6837\u5199&#xff0c;\u66f4\u7b80\u6d01&#xff1a;<\/p>\n<p><span class=\"token keyword\">foreach<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> item <span class=\"token keyword\">in<\/span> scores<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    Console<span class=\"token punctuation\">.<\/span><span class=\"token function\">WriteLine<\/span><span class=\"token punctuation\">(<\/span><span class=\"token interpolation-string\"><span class=\"token string\">$&#034;<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span><span class=\"token expression language-csharp\">item<span class=\"token punctuation\">.<\/span>Key<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#xff1a;<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span><span class=\"token expression language-csharp\">item<span class=\"token punctuation\">.<\/span>Value<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">\u5206&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<hr \/>\n<h3>\u4e94\u3001\u5e38\u7528\u5c5e\u6027\u548c\u65b9\u6cd5\u4e00\u89c8<\/h3>\n<h4>5.1 Count \u5c5e\u6027&#xff1a;\u6709\u591a\u5c11\u4e2a\u5143\u7d20<\/h4>\n<p><span class=\"token class-name\"><span class=\"token keyword\">int<\/span><\/span> count <span class=\"token operator\">&#061;<\/span> scores<span class=\"token punctuation\">.<\/span>Count<span class=\"token punctuation\">;<\/span><br \/>\nConsole<span class=\"token punctuation\">.<\/span><span class=\"token function\">WriteLine<\/span><span class=\"token punctuation\">(<\/span><span class=\"token interpolation-string\"><span class=\"token string\">$&#034;\u5b57\u5178\u91cc\u4e00\u5171\u6709 <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span><span class=\"token expression language-csharp\">count<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\"> \u6761\u8bb0\u5f55&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u6ce8\u610f&#xff1a;\u662f Count&#xff0c;\u4e0d\u662f Count() \u65b9\u6cd5&#xff08;\u90a3\u662f LINQ \u7684&#xff09;\u3002\u76f4\u63a5\u7528\u5c5e\u6027\u66f4\u5feb\u3002<\/p>\n<h4>5.2 ContainsKey&#xff1a;\u5224\u65ad\u952e\u662f\u5426\u5b58\u5728<\/h4>\n<p><span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>scores<span class=\"token punctuation\">.<\/span><span class=\"token function\">ContainsKey<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u5f20\u4e09&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    Console<span class=\"token punctuation\">.<\/span><span class=\"token function\">WriteLine<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u5f20\u4e09\u7684\u6210\u7ee9\u5b58\u5728&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u8fd9\u4e2a\u65b9\u6cd5\u5728\u6dfb\u52a0\u4e4b\u524d\u505a\u68c0\u67e5\u7279\u522b\u6709\u7528&#xff1a;<\/p>\n<p><span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>scores<span class=\"token punctuation\">.<\/span><span class=\"token function\">ContainsKey<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u5f20\u4e09&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    scores<span class=\"token punctuation\">.<\/span><span class=\"token function\">Add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u5f20\u4e09&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">90<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>5.3 ContainsValue&#xff1a;\u5224\u65ad\u503c\u662f\u5426\u5b58\u5728<\/h4>\n<p><span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>scores<span class=\"token punctuation\">.<\/span><span class=\"token function\">ContainsValue<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">95<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    Console<span class=\"token punctuation\">.<\/span><span class=\"token function\">WriteLine<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u6709\u4eba\u8003\u4e8695\u5206&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u6ce8\u610f&#xff1a;\u67e5\u627e\u503c\u6bd4\u67e5\u627e\u952e\u6162\u5f88\u591a&#xff0c;\u56e0\u4e3a\u503c\u6ca1\u6709\u505a\u54c8\u5e0c\u3002\u80fd\u7528\u952e\u67e5\u5c31\u5c3d\u91cf\u7528\u952e\u67e5\u3002<\/p>\n<hr \/>\n<h3>\u516d\u3001\u65b0\u624b\u6700\u5bb9\u6613\u8e29\u7684 5 \u4e2a\u5751<\/h3>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261027141636-6ae0b2449ddc8.png\" alt=\"\u8bf7\u6dfb\u52a0\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h4>\u5751 1&#xff1a;\u952e\u91cd\u590d\u5bfc\u81f4 Add \u629b\u5f02\u5e38<\/h4>\n<p>\u5f88\u591a\u65b0\u624b\u4e0a\u6765\u5c31 Add&#xff0c;\u7ed3\u679c\u952e\u5df2\u7ecf\u5b58\u5728\u4e86&#xff0c;\u7a0b\u5e8f\u76f4\u63a5\u5d29\u3002<\/p>\n<p>\u89e3\u51b3\u529e\u6cd5&#xff1a;\u8981\u4e48\u5148 ContainsKey \u68c0\u67e5&#xff0c;\u8981\u4e48\u76f4\u63a5\u7528\u7d22\u5f15\u5668\u8d4b\u503c\u3002<\/p>\n<h4>\u5751 2&#xff1a;\u7528\u7d22\u5f15\u5668\u53d6\u503c&#xff0c;\u952e\u4e0d\u5b58\u5728\u5c31\u5d29<\/h4>\n<p><span class=\"token class-name\"><span class=\"token keyword\">int<\/span><\/span> score <span class=\"token operator\">&#061;<\/span> scores<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;\u4e0d\u5b58\u5728\u7684\u4eba&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u76f4\u63a5\u629b KeyNotFoundException<\/span><\/p>\n<p>\u89e3\u51b3\u529e\u6cd5&#xff1a;\u7528 TryGetValue&#xff0c;\u522b\u7528\u88f8\u7d22\u5f15\u5668\u53d6\u503c\u3002<\/p>\n<h4>\u5751 3&#xff1a;\u904d\u5386\u7684\u65f6\u5019\u4fee\u6539\u96c6\u5408<\/h4>\n<p><span class=\"token keyword\">foreach<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> item <span class=\"token keyword\">in<\/span> scores<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    scores<span class=\"token punctuation\">.<\/span><span class=\"token function\">Remove<\/span><span class=\"token punctuation\">(<\/span>item<span class=\"token punctuation\">.<\/span>Key<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u8fd0\u884c\u65f6\u62a5\u9519&#xff1a;\u96c6\u5408\u5df2\u4fee\u6539<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u89e3\u51b3\u529e\u6cd5&#xff1a;\u8981\u5220\u9664\u7684\u8bdd&#xff0c;\u5148\u628a\u952e\u5b58\u5230\u4e00\u4e2a\u4e34\u65f6\u5217\u8868\u91cc&#xff0c;\u904d\u5386\u5b8c\u518d\u5220&#xff1a;<\/p>\n<p><span class=\"token class-name\">List<span class=\"token punctuation\">&lt;<\/span><span class=\"token keyword\">string<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> keysToRemove <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">List<span class=\"token punctuation\">&lt;<\/span><span class=\"token keyword\">string<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">foreach<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> item <span class=\"token keyword\">in<\/span> scores<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>item<span class=\"token punctuation\">.<\/span>Value <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">60<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        keysToRemove<span class=\"token punctuation\">.<\/span><span class=\"token function\">Add<\/span><span class=\"token punctuation\">(<\/span>item<span class=\"token punctuation\">.<\/span>Key<span class=\"token punctuation\">)<\/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 keyword\">foreach<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\"><span class=\"token keyword\">string<\/span><\/span> key <span class=\"token keyword\">in<\/span> keysToRemove<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    scores<span class=\"token punctuation\">.<\/span><span class=\"token function\">Remove<\/span><span class=\"token punctuation\">(<\/span>key<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>\u5751 4&#xff1a;\u7528\u53ef\u53d8\u7c7b\u578b\u5f53\u952e<\/h4>\n<p>\u6bd4\u5982\u4f60\u7528\u4e00\u4e2a\u81ea\u5b9a\u4e49\u7c7b\u5f53\u952e&#xff0c;\u7136\u540e\u8fd9\u4e2a\u7c7b\u7684\u5b9e\u4f8b\u88ab\u4fee\u6539\u4e86&#xff0c;\u90a3\u8fd9\u4e2a\u952e\u5c31&#034;\u627e\u4e0d\u5230\u81ea\u5df1&#034;\u4e86\u3002<\/p>\n<p>\u89e3\u51b3\u529e\u6cd5&#xff1a;\u5c3d\u91cf\u7528\u57fa\u672c\u7c7b\u578b&#xff08;int\u3001string\u3001Guid \u7b49&#xff09;\u5f53\u952e&#xff0c;\u7a33\u5b9a\u53ef\u9760\u3002<\/p>\n<h4>\u5751 5&#xff1a;Dictionary \u662f\u65e0\u5e8f\u7684<\/h4>\n<p>\u5f88\u591a\u65b0\u624b\u4ee5\u4e3a Dictionary \u4f1a\u6309\u7167\u6dfb\u52a0\u987a\u5e8f\u6392\u5217&#xff0c;\u5176\u5b9e\u4e0d\u662f\u3002\u5b83\u7684\u5185\u90e8\u7ed3\u6784\u662f\u54c8\u5e0c\u8868&#xff0c;\u904d\u5386\u987a\u5e8f\u548c\u63d2\u5165\u987a\u5e8f\u6ca1\u6709\u5173\u7cfb\u3002<\/p>\n<p>\u89e3\u51b3\u529e\u6cd5&#xff1a;\u5982\u679c\u9700\u8981\u6309\u987a\u5e8f\u904d\u5386&#xff0c;\u7528 SortedDictionary \u6216\u8005\u904d\u5386\u5b8c\u81ea\u5df1\u6392\u5e8f\u3002<\/p>\n<hr \/>\n<h3>\u4e03\u3001Dictionary vs List&#xff1a;\u5230\u5e95\u7528\u54ea\u4e2a&#xff1f;<\/h3>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261027141636-6ae0b244e9cc4.png\" alt=\"\u8bf7\u6dfb\u52a0\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>\u8fd9\u662f\u9762\u8bd5\u5e38\u8003\u9898&#xff0c;\u4e5f\u662f\u65b0\u624b\u6700\u56f0\u60d1\u7684\u5730\u65b9\u3002<\/p>\n<table>\n<tr>\u5bf9\u6bd4\u7ef4\u5ea6DictionaryList<\/tr>\n<tbody>\n<tr>\n<td>\u67e5\u627e\u65b9\u5f0f<\/td>\n<td>\u6309\u952e\u5feb\u901f\u67e5\u627e&#xff0c;O(1)<\/td>\n<td>\u904d\u5386\u67e5\u627e&#xff0c;O(n)<\/td>\n<\/tr>\n<tr>\n<td>\u9002\u7528\u573a\u666f<\/td>\n<td>\u901a\u8fc7\u6807\u8bc6\u627e\u6570\u636e<\/td>\n<td>\u987a\u5e8f\u5b58\u50a8\u4e00\u7ec4\u6570\u636e<\/td>\n<\/tr>\n<tr>\n<td>\u662f\u5426\u6709\u5e8f<\/td>\n<td>\u65e0\u5e8f<\/td>\n<td>\u6309\u63d2\u5165\u987a\u5e8f<\/td>\n<\/tr>\n<tr>\n<td>\u5185\u5b58\u5360\u7528<\/td>\n<td>\u8f83\u5927&#xff08;\u54c8\u5e0c\u8868\u7ed3\u6784&#xff09;<\/td>\n<td>\u8f83\u5c0f<\/td>\n<\/tr>\n<tr>\n<td>\u5178\u578b\u4f8b\u5b50<\/td>\n<td>\u7528\u6237\u540d\u2192\u7528\u6237\u4fe1\u606f<\/td>\n<td>\u5546\u54c1\u5217\u8868<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u7b80\u5355\u8bb0&#xff1a;<\/p>\n<ul>\n<li>\u9700\u8981\u6309\u540d\u5b57\u5feb\u901f\u627e\u4e1c\u897f \u2192 \u7528 Dictionary<\/li>\n<li>\u9700\u8981\u6309\u987a\u5e8f\u6392\u4e00\u6392 \u2192 \u7528 List<\/li>\n<li>\u4e24\u8005\u7ecf\u5e38\u914d\u5408\u4f7f\u7528&#xff0c;\u4e0d\u662f\u4e8c\u9009\u4e00\u7684\u5173\u7cfb<\/li>\n<\/ul>\n<hr \/>\n<h3>\u516b\u3001\u5b9e\u6218\u5c0f\u4f8b\u5b50&#xff1a;\u5b66\u751f\u6210\u7ee9\u7ba1\u7406\u7cfb\u7edf<\/h3>\n<p>\u5149\u8bf4\u4e0d\u7ec3\u5047\u628a\u5f0f&#xff0c;\u6211\u4eec\u6765\u5199\u4e00\u4e2a\u5b8c\u6574\u7684\u5c0f\u4f8b\u5b50&#xff0c;\u628a\u524d\u9762\u5b66\u7684\u90fd\u4e32\u8d77\u6765\u3002<\/p>\n<p><span class=\"token keyword\">using<\/span> <span class=\"token namespace\">System<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token namespace\">System<span class=\"token punctuation\">.<\/span>Collections<span class=\"token punctuation\">.<\/span>Generic<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Program<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">static<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">void<\/span><\/span> <span class=\"token function\">Main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ \u521b\u5efa\u6210\u7ee9\u5b57\u5178<\/span><br \/>\n        <span class=\"token class-name\">Dictionary<span class=\"token punctuation\">&lt;<\/span><span class=\"token keyword\">string<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> scores <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">Dictionary<span class=\"token punctuation\">&lt;<\/span><span class=\"token keyword\">string<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span><span class=\"token punctuation\">&gt;<\/span><\/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 string\">&#034;\u5f20\u4e09&#034;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">90<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;\u674e\u56db&#034;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">85<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;\u738b\u4e94&#034;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">95<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;\u8d75\u516d&#034;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">58<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        Console<span class=\"token punctuation\">.<\/span><span class=\"token function\">WriteLine<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;&#061;&#061;&#061; \u5b66\u751f\u6210\u7ee9\u7ba1\u7406\u7cfb\u7edf &#061;&#061;&#061;&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ 1. \u67e5\u8be2\u67d0\u4e2a\u5b66\u751f\u7684\u6210\u7ee9<\/span><br \/>\n        Console<span class=\"token punctuation\">.<\/span><span class=\"token function\">Write<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u8bf7\u8f93\u5165\u8981\u67e5\u8be2\u7684\u5b66\u751f\u59d3\u540d&#xff1a;&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">string<\/span><\/span> name <span class=\"token operator\">&#061;<\/span> Console<span class=\"token punctuation\">.<\/span><span class=\"token function\">ReadLine<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>scores<span class=\"token punctuation\">.<\/span><span class=\"token function\">TryGetValue<\/span><span class=\"token punctuation\">(<\/span>name<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">out<\/span> <span class=\"token class-name\"><span class=\"token keyword\">int<\/span><\/span> score<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            Console<span class=\"token punctuation\">.<\/span><span class=\"token function\">WriteLine<\/span><span class=\"token punctuation\">(<\/span><span class=\"token interpolation-string\"><span class=\"token string\">$&#034;<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span><span class=\"token expression language-csharp\">name<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\"> \u7684\u6210\u7ee9\u662f&#xff1a;<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span><span class=\"token expression language-csharp\">score<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\"> \u5206&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token keyword\">else<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            Console<span class=\"token punctuation\">.<\/span><span class=\"token function\">WriteLine<\/span><span class=\"token punctuation\">(<\/span><span class=\"token interpolation-string\"><span class=\"token string\">$&#034;\u6ca1\u627e\u5230 <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span><span class=\"token expression language-csharp\">name<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\"> \u7684\u6210\u7ee9&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ 2. \u7edf\u8ba1\u6709\u591a\u5c11\u4eba\u4e0d\u53ca\u683c<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">int<\/span><\/span> failCount <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">List<span class=\"token punctuation\">&lt;<\/span><span class=\"token keyword\">string<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> failNames <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">List<span class=\"token punctuation\">&lt;<\/span><span class=\"token keyword\">string<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token keyword\">foreach<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> item <span class=\"token keyword\">in<\/span> scores<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>item<span class=\"token punctuation\">.<\/span>Value <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">60<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token punctuation\">{<\/span><br \/>\n                failCount<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                failNames<span class=\"token punctuation\">.<\/span><span class=\"token function\">Add<\/span><span class=\"token punctuation\">(<\/span>item<span class=\"token punctuation\">.<\/span>Key<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>        Console<span class=\"token punctuation\">.<\/span><span class=\"token function\">WriteLine<\/span><span class=\"token punctuation\">(<\/span><span class=\"token interpolation-string\"><span class=\"token string\">$&#034;\\\\n\u4e0d\u53ca\u683c\u7684\u540c\u5b66\u6709 <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span><span class=\"token expression language-csharp\">failCount<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\"> \u4eba&#xff1a;&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">foreach<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\"><span class=\"token keyword\">string<\/span><\/span> failName <span class=\"token keyword\">in<\/span> failNames<span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            Console<span class=\"token punctuation\">.<\/span><span class=\"token function\">WriteLine<\/span><span class=\"token punctuation\">(<\/span><span class=\"token interpolation-string\"><span class=\"token string\">$&#034;  &#8211; <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span><span class=\"token expression language-csharp\">failName<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ 3. \u8ba1\u7b97\u5e73\u5747\u5206<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">int<\/span><\/span> total <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">foreach<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\"><span class=\"token keyword\">int<\/span><\/span> s <span class=\"token keyword\">in<\/span> scores<span class=\"token punctuation\">.<\/span>Values<span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            total <span class=\"token operator\">&#043;&#061;<\/span> s<span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">double<\/span><\/span> avg <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">double<\/span><span class=\"token punctuation\">)<\/span>total <span class=\"token operator\">\/<\/span> scores<span class=\"token punctuation\">.<\/span>Count<span class=\"token punctuation\">;<\/span><br \/>\n        Console<span class=\"token punctuation\">.<\/span><span class=\"token function\">WriteLine<\/span><span class=\"token punctuation\">(<\/span><span class=\"token interpolation-string\"><span class=\"token string\">$&#034;\\\\n\u73ed\u7ea7\u5e73\u5747\u5206&#xff1a;<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span><span class=\"token expression language-csharp\">avg<\/span><span class=\"token format-string\"><span class=\"token punctuation\">:<\/span>F2<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\"> \u5206&#034;<\/span><\/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><\/p>\n<p>\u8fd9\u4e2a\u4f8b\u5b50\u867d\u7136\u7b80\u5355&#xff0c;\u4f46\u6db5\u76d6\u4e86\u521b\u5efa\u3001\u67e5\u8be2\u3001\u904d\u5386\u3001\u7edf\u8ba1\u7b49\u6838\u5fc3\u64cd\u4f5c&#xff0c;\u4f60\u53ef\u4ee5\u76f4\u63a5\u62ff\u53bb\u8dd1\u4e00\u904d&#xff0c;\u611f\u53d7\u4e00\u4e0b\u3002<\/p>\n<hr \/>\n<h3>\u4e5d\u3001\u603b\u7ed3<\/h3>\n<p>\u5230\u8fd9\u91cc&#xff0c;Dictionary \u7684\u6838\u5fc3\u77e5\u8bc6\u70b9\u5c31\u8bb2\u5b8c\u4e86\u3002\u6211\u4eec\u6765\u5feb\u901f\u56de\u987e\u4e00\u4e0b&#xff1a;<\/p>\n<li>Dictionary \u662f\u952e\u503c\u5bf9\u96c6\u5408&#xff0c;\u901a\u8fc7\u952e\u5feb\u901f\u627e\u503c&#xff0c;\u67e5\u627e\u6027\u80fd\u5f88\u597d<\/li>\n<li>\u6dfb\u52a0\u7528 Add \u6216\u7d22\u5f15\u5668&#xff0c;\u53d6\u503c\u63a8\u8350\u7528 TryGetValue&#xff0c;\u66f4\u5b89\u5168<\/li>\n<li>\u904d\u5386\u7528 foreach&#xff0c;\u53ef\u4ee5\u904d\u5386\u6574\u4e2a\u952e\u503c\u5bf9&#xff0c;\u4e5f\u53ef\u4ee5\u5355\u72ec\u904d\u5386\u952e\u6216\u503c<\/li>\n<li>\u5e38\u89c1\u5751&#xff1a;\u952e\u91cd\u590d\u3001\u904d\u5386\u4fee\u6539\u96c6\u5408\u3001\u8bef\u4ee5\u4e3a\u6709\u5e8f&#xff0c;\u8fd9\u4e9b\u90fd\u8981\u907f\u5f00<\/li>\n<li>\u548c List \u7684\u533a\u522b&#xff1a;Dictionary \u9002\u5408\u6309\u952e\u67e5\u627e&#xff0c;List \u9002\u5408\u987a\u5e8f\u5b58\u50a8<\/li>\n<p>Dictionary \u662f C# \u96c6\u5408\u91cc\u6700\u57fa\u7840\u4e5f\u6700\u5e38\u7528\u7684\u7c7b\u578b\u4e4b\u4e00&#xff0c;\u628a\u5b83\u638c\u63e1\u597d&#xff0c;\u540e\u9762\u5b66\u66f4\u590d\u6742\u7684\u96c6\u5408&#xff08;\u6bd4\u5982 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