{"id":1219,"date":"2025-01-25T23:15:22","date_gmt":"2025-01-25T15:15:22","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=1219"},"modified":"2025-01-25T23:15:23","modified_gmt":"2025-01-25T15:15:23","slug":"%e5%a6%82%e4%bd%95%e9%ab%98%e6%95%88%e6%9f%a5%e6%89%be%e9%9b%86%e5%90%88%e4%b8%ad%e5%b1%9e%e6%80%a7%e5%80%bc%e6%9c%80%e5%a4%a7%e7%9a%84%e5%af%b9%e8%b1%a1%ef%bc%9a%e6%9c%80%e4%bd%b3%e5%ae%9e%e8%b7%b5","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/01\/25\/%e5%a6%82%e4%bd%95%e9%ab%98%e6%95%88%e6%9f%a5%e6%89%be%e9%9b%86%e5%90%88%e4%b8%ad%e5%b1%9e%e6%80%a7%e5%80%bc%e6%9c%80%e5%a4%a7%e7%9a%84%e5%af%b9%e8%b1%a1%ef%bc%9a%e6%9c%80%e4%bd%b3%e5%ae%9e%e8%b7%b5\/","title":{"rendered":"\u5982\u4f55\u9ad8\u6548\u67e5\u627e\u96c6\u5408\u4e2d\u5c5e\u6027\u503c\u6700\u5927\u7684\u5bf9\u8c61\uff1a\u6700\u4f73\u5b9e\u8df5\u4e0e\u65b9\u6cd5"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u5728 C# \u4e2d\uff0c\u9ad8\u6548\u67e5\u627e\u96c6\u5408\u4e2d\u5c5e\u6027\u503c\u6700\u5927\u7684\u5bf9\u8c61\u662f\u4e00\u4e2a\u5e38\u89c1\u7684\u9700\u6c42\u3002\u53ef\u4ee5\u4f7f\u7528 LINQ\uff08\u8bed\u8a00\u96c6\u6210\u67e5\u8be2\uff09\u6765\u8f7b\u677e\u5b9e\u73b0\u8fd9\u4e00\u64cd\u4f5c\uff0c\u6216\u8005\u6839\u636e\u5177\u4f53\u7684\u573a\u666f\u9009\u62e9\u4e0d\u540c\u7684\u65b9\u6cd5\uff0c\u4ee5\u786e\u4fdd\u5728\u5904\u7406\u5927\u578b\u96c6\u5408\u65f6\u80fd\u591f\u4f18\u5316\u6027\u80fd\u3002\u4ee5\u4e0b\u662f\u51e0\u79cd\u65b9\u6cd5\u6765\u67e5\u627e\u96c6\u5408\u4e2d\u5c5e\u6027\u503c\u6700\u5927\u7684\u5bf9\u8c61\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. \u4f7f\u7528 LINQ \u7684 <code>OrderByDescending<\/code> \u65b9\u6cd5<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>OrderByDescending<\/code> \u65b9\u6cd5\u53ef\u4ee5\u6309\u964d\u5e8f\u6392\u5e8f\u96c6\u5408\uff0c\u7136\u540e\u9009\u53d6\u7b2c\u4e00\u4e2a\u5143\u7d20\u4f5c\u4e3a\u5c5e\u6027\u503c\u6700\u5927\u7684\u5bf9\u8c61\u3002\u8fd9\u79cd\u65b9\u6cd5\u7b80\u6d01\u4e14\u76f4\u89c2\uff0c\u9002\u7528\u4e8e\u5927\u591a\u6570\u573a\u666f\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u793a\u4f8b\u4ee3\u7801\uff1a<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>using System;\nusing System.Linq;\nusing System.Collections.Generic;\n\nclass Person\n{\n    public string Name { get; set; }\n    public int Age { get; set; }\n}\n\nclass Program\n{\n    static void Main()\n    {\n        List&lt;Person&gt; people = new List&lt;Person&gt;\n        {\n            new Person { Name = \"Alice\", Age = 30 },\n            new Person { Name = \"Bob\", Age = 45 },\n            new Person { Name = \"Charlie\", Age = 35 }\n        };\n\n        \/\/ \u4f7f\u7528 LINQ \u67e5\u627e\u5e74\u9f84\u6700\u5927\u7684\u5bf9\u8c61\n        Person oldest = people.OrderByDescending(p =&gt; p.Age).FirstOrDefault();\n\n        if (oldest != null)\n        {\n            Console.WriteLine($\"{oldest.Name} is the oldest with age {oldest.Age}\");\n        }\n    }\n}<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">\u89e3\u91ca\uff1a<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>OrderByDescending(p => p.Age)<\/code> \u6309\u7167 <code>Age<\/code> \u5c5e\u6027\u7684\u964d\u5e8f\u6392\u5217\u96c6\u5408\u3002<\/li>\n\n\n\n<li><code>FirstOrDefault()<\/code> \u8fd4\u56de\u7b2c\u4e00\u4e2a\u5143\u7d20\uff0c\u5373\u6700\u5927\u7684\u90a3\u4e2a\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u4f18\u70b9\uff1a<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7b80\u5355\u3001\u6613\u8bfb\uff0c\u9002\u7528\u4e8e\u5927\u90e8\u5206\u60c5\u51b5\u3002<\/li>\n\n\n\n<li>\u9002\u5408\u5904\u7406\u4e2d\u5c0f\u89c4\u6a21\u7684\u96c6\u5408\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u7f3a\u70b9\uff1a<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9700\u8981\u5bf9\u6574\u4e2a\u96c6\u5408\u8fdb\u884c\u6392\u5e8f\uff0c\u65f6\u95f4\u590d\u6742\u5ea6\u4e3a O(n log n)\uff0c\u53ef\u80fd\u4f1a\u5728\u96c6\u5408\u8f83\u5927\u65f6\u5f71\u54cd\u6027\u80fd\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2. \u4f7f\u7528 LINQ \u7684 <code>Max<\/code> \u65b9\u6cd5\uff08\u66f4\u9ad8\u6548\u7684\u5355\u6b21\u67e5\u627e\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u53ea\u5173\u5fc3\u5c5e\u6027\u503c\u7684\u6700\u5927\u503c\u800c\u4e0d\u9700\u8981\u6392\u5e8f\uff0c<code>Max<\/code> \u65b9\u6cd5\u63d0\u4f9b\u4e86\u4e00\u4e2a\u66f4\u9ad8\u6548\u7684\u65b9\u6848\u3002\u5b83\u901a\u8fc7\u4e00\u6b21\u904d\u5386\u5373\u53ef\u627e\u51fa\u6700\u5927\u503c\uff0c\u65f6\u95f4\u590d\u6742\u5ea6\u4e3a O(n)\uff0c\u9002\u7528\u4e8e\u6027\u80fd\u8981\u6c42\u8f83\u9ad8\u7684\u573a\u666f\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u793a\u4f8b\u4ee3\u7801\uff1a<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>using System;\nusing System.Linq;\nusing System.Collections.Generic;\n\nclass Person\n{\n    public string Name { get; set; }\n    public int Age { get; set; }\n}\n\nclass Program\n{\n    static void Main()\n    {\n        List&lt;Person&gt; people = new List&lt;Person&gt;\n        {\n            new Person { Name = \"Alice\", Age = 30 },\n            new Person { Name = \"Bob\", Age = 45 },\n            new Person { Name = \"Charlie\", Age = 35 }\n        };\n\n        \/\/ \u67e5\u627e\u5e74\u9f84\u6700\u5927\u7684\u5bf9\u8c61\n        int maxAge = people.Max(p =&gt; p.Age);\n        Person oldest = people.FirstOrDefault(p =&gt; p.Age == maxAge);\n\n        if (oldest != null)\n        {\n            Console.WriteLine($\"{oldest.Name} is the oldest with age {oldest.Age}\");\n        }\n    }\n}<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">\u89e3\u91ca\uff1a<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>Max(p => p.Age)<\/code> \u627e\u51fa\u96c6\u5408\u4e2d <code>Age<\/code> \u5c5e\u6027\u7684\u6700\u5927\u503c\u3002<\/li>\n\n\n\n<li><code>FirstOrDefault(p => p.Age == maxAge)<\/code> \u6839\u636e\u6700\u5927\u503c\u627e\u5230\u5bf9\u5e94\u7684\u5bf9\u8c61\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u4f18\u70b9\uff1a<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u53ea\u9700\u904d\u5386\u96c6\u5408\u4e24\u6b21\uff0c\u65f6\u95f4\u590d\u6742\u5ea6\u4e3a O(n)\uff0c\u76f8\u8f83\u4e8e\u6392\u5e8f\u66f4\u9ad8\u6548\u3002<\/li>\n\n\n\n<li>\u9002\u7528\u4e8e\u5927\u96c6\u5408\u4e14\u53ea\u5173\u5fc3\u6700\u5927\u503c\u7684\u573a\u666f\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u7f3a\u70b9\uff1a<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5982\u679c\u6709\u591a\u4e2a\u5bf9\u8c61\u5177\u6709\u76f8\u540c\u7684\u6700\u5927\u5c5e\u6027\u503c\uff0c\u5b83\u4f1a\u8fd4\u56de\u7b2c\u4e00\u4e2a\u7b26\u5408\u6761\u4ef6\u7684\u5bf9\u8c61\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">3. \u4f7f\u7528\u5faa\u73af\u904d\u5386\u4f18\u5316\u6027\u80fd<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u96c6\u5408\u8f83\u5927\uff0c\u4e14\u4f60\u5e0c\u671b\u5728\u904d\u5386\u8fc7\u7a0b\u4e2d\u5373\u65f6\u6bd4\u8f83\u548c\u66f4\u65b0\u6700\u5927\u503c\uff0c\u53ef\u4ee5\u4f7f\u7528\u4f20\u7edf\u7684 <code>foreach<\/code> \u5faa\u73af\u3002\u8fd9\u79cd\u65b9\u6cd5\u907f\u514d\u4e86\u989d\u5916\u7684\u6392\u5e8f\u6216\u591a\u6b21\u904d\u5386\uff0c\u53ef\u4ee5\u8fdb\u4e00\u6b65\u63d0\u9ad8\u6027\u80fd\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u793a\u4f8b\u4ee3\u7801\uff1a<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>using System;\nusing System.Collections.Generic;\n\nclass Person\n{\n    public string Name { get; set; }\n    public int Age { get; set; }\n}\n\nclass Program\n{\n    static void Main()\n    {\n        List&lt;Person&gt; people = new List&lt;Person&gt;\n        {\n            new Person { Name = \"Alice\", Age = 30 },\n            new Person { Name = \"Bob\", Age = 45 },\n            new Person { Name = \"Charlie\", Age = 35 }\n        };\n\n        \/\/ \u4f7f\u7528\u5faa\u73af\u67e5\u627e\u6700\u5927\u5e74\u9f84\n        Person oldest = null;\n        foreach (var person in people)\n        {\n            if (oldest == null || person.Age &gt; oldest.Age)\n            {\n                oldest = person;\n            }\n        }\n\n        if (oldest != null)\n        {\n            Console.WriteLine($\"{oldest.Name} is the oldest with age {oldest.Age}\");\n        }\n    }\n}<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">\u89e3\u91ca\uff1a<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4f7f\u7528 <code>foreach<\/code> \u5faa\u73af\u904d\u5386\u96c6\u5408\uff0c\u5e76\u901a\u8fc7\u6bd4\u8f83\u5f53\u524d\u5bf9\u8c61\u7684 <code>Age<\/code> \u5c5e\u6027\u4e0e <code>oldest<\/code> \u5bf9\u8c61\u7684 <code>Age<\/code> \u5c5e\u6027\u6765\u66f4\u65b0\u6700\u5927\u503c\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u4f18\u70b9\uff1a<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u53ea\u9700\u904d\u5386\u96c6\u5408\u4e00\u6b21\uff0c\u65f6\u95f4\u590d\u6742\u5ea6\u4e3a O(n)\uff0c\u662f\u6700\u9ad8\u6548\u7684\u65b9\u5f0f\u3002<\/li>\n\n\n\n<li>\u9002\u7528\u4e8e\u5927\u89c4\u6a21\u96c6\u5408\uff0c\u6027\u80fd\u4f18\u8d8a\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u7f3a\u70b9\uff1a<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4ee3\u7801\u7a0d\u663e\u5197\u957f\uff0c\u4e14\u6ca1\u6709 LINQ \u63d0\u4f9b\u7684\u7b80\u6d01\u6027\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">4. \u4f7f\u7528 <code>Aggregate<\/code> \u65b9\u6cd5\uff08\u53e6\u4e00\u79cd LINQ \u65b9\u5f0f\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>Aggregate<\/code> \u65b9\u6cd5\u662f LINQ \u7684\u4e00\u4e2a\u9ad8\u7ea7\u529f\u80fd\uff0c\u80fd\u591f\u5b9e\u73b0\u5404\u79cd\u805a\u5408\u64cd\u4f5c\u3002\u5728\u67e5\u627e\u6700\u5927\u503c\u7684\u573a\u666f\u4e2d\uff0c\u5b83\u80fd\u591f\u901a\u8fc7\u7d2f\u52a0\u5668\u6765\u8fdb\u884c\u6bd4\u8f83\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u793a\u4f8b\u4ee3\u7801\uff1a<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>using System;\nusing System.Linq;\nusing System.Collections.Generic;\n\nclass Person\n{\n    public string Name { get; set; }\n    public int Age { get; set; }\n}\n\nclass Program\n{\n    static void Main()\n    {\n        List&lt;Person&gt; people = new List&lt;Person&gt;\n        {\n            new Person { Name = \"Alice\", Age = 30 },\n            new Person { Name = \"Bob\", Age = 45 },\n            new Person { Name = \"Charlie\", Age = 35 }\n        };\n\n        \/\/ \u4f7f\u7528 Aggregate \u67e5\u627e\u6700\u5927\u5e74\u9f84\u7684\u5bf9\u8c61\n        Person oldest = people.Aggregate((p1, p2) =&gt; p1.Age &gt; p2.Age ? p1 : p2);\n\n        Console.WriteLine($\"{oldest.Name} is the oldest with age {oldest.Age}\");\n    }\n}<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">\u89e3\u91ca\uff1a<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>Aggregate<\/code> \u65b9\u6cd5\u4f7f\u7528\u7d2f\u52a0\u5668\u6bd4\u8f83\u4e24\u4e2a\u5bf9\u8c61\u7684 <code>Age<\/code> \u5c5e\u6027\uff0c\u6700\u7ec8\u8fd4\u56de\u5c5e\u6027\u503c\u6700\u5927\u7684\u5bf9\u8c61\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u4f18\u70b9\uff1a<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4f7f\u7528 LINQ \u8868\u8fbe\u5f0f\uff0c\u4ee3\u7801\u7b80\u6d01\u3002<\/li>\n\n\n\n<li>\u4e00\u6b21\u904d\u5386\uff0c\u6027\u80fd\u8f83\u9ad8\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u7f3a\u70b9\uff1a<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9002\u7528\u4e8e\u719f\u6089 LINQ \u7684\u5f00\u53d1\u8005\uff0c\u53ef\u80fd\u5bf9\u4e8e\u521d\u5b66\u8005\u6765\u8bf4\u4e0d\u592a\u76f4\u89c2\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\uff1a<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6027\u80fd\u9700\u6c42\u9ad8<\/strong>\uff1a\u4f7f\u7528 <code>foreach<\/code> \u5faa\u73af\u904d\u5386\u96c6\u5408\uff0c\u907f\u514d\u6392\u5e8f\u6216\u591a\u6b21\u904d\u5386\uff0c\u6700\u4e3a\u9ad8\u6548\u3002<\/li>\n\n\n\n<li><strong>\u7b80\u6d01\u4ee3\u7801\u9700\u6c42<\/strong>\uff1a\u4f7f\u7528 <code>Max<\/code> \u65b9\u6cd5\u67e5\u627e\u6700\u5927\u503c\uff0c\u518d\u901a\u8fc7 <code>FirstOrDefault<\/code> \u83b7\u53d6\u5bf9\u8c61\uff0c\u7b80\u6d01\u4e14\u9ad8\u6548\u3002<\/li>\n\n\n\n<li><strong>\u590d\u6742\u67e5\u8be2\u9700\u6c42<\/strong>\uff1a\u53ef\u4ee5\u4f7f\u7528 <code>OrderByDescending<\/code> \u5bf9\u96c6\u5408\u8fdb\u884c\u6392\u5e8f\uff0c\u518d\u9009\u62e9\u7b2c\u4e00\u4e2a\u5bf9\u8c61\uff0c\u9002\u7528\u4e8e\u9700\u8981\u6392\u5e8f\u7684\u573a\u666f\u3002<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 C# \u4e2d\uff0c\u9ad8\u6548\u67e5\u627e\u96c6\u5408\u4e2d\u5c5e\u6027\u503c\u6700\u5927\u7684\u5bf9\u8c61\u662f\u4e00\u4e2a\u5e38\u89c1\u7684\u9700\u6c42\u3002\u53ef\u4ee5\u4f7f\u7528 LINQ\uff08\u8bed\u8a00\u96c6\u6210\u67e5\u8be2\uff09\u6765\u8f7b\u677e\u5b9e\u73b0\u8fd9\u4e00 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[59],"tags":[],"class_list":["post-1219","post","type-post","status-publish","format-standard","hentry","category-c"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/1219","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/comments?post=1219"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/1219\/revisions"}],"predecessor-version":[{"id":1220,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/1219\/revisions\/1220"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=1219"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=1219"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=1219"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}