{"id":203270,"date":"2025-05-22T09:06:42","date_gmt":"2025-05-22T01:06:42","guid":{"rendered":"https:\/\/server.hk\/cnblog\/203270\/"},"modified":"2025-05-22T09:06:42","modified_gmt":"2025-05-22T01:06:42","slug":"%e6%9f%a5%e6%89%be%e6%95%b0%e7%bb%84-%e5%88%97%e8%a1%a8%e4%b8%ad%e7%9a%84%e9%87%8d%e5%a4%8d%e5%85%83%e7%b4%a0","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/203270\/","title":{"rendered":"\u67e5\u627e\u6570\u7ec4\/\u5217\u8868\u4e2d\u7684\u91cd\u590d\u5143\u7d20"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>\u67e5\u627e\u6570\u7ec4\/\u5217\u8868\u4e2d\u7684\u91cd\u590d\u5143\u7d20<\/h1>\n<p><span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span>    <\/p>\n<p>\u600e\u4e48\u5165\u95e8\u6587\u7ae0\u7f16\u7a0b\uff1f\u9700\u8981\u5b66\u4e60\u54ea\u4e9b\u77e5\u8bc6\u70b9\uff1f\u8fd9\u662f\u65b0\u624b\u4eec\u521a\u63a5\u89e6\u7f16\u7a0b\u65f6\u5e38\u89c1\u7684\u95ee\u9898\uff1b\u4e0b\u9762\u5c31\u6765\u7ed9\u5927\u5bb6\u6574\u7406\u5206\u4eab\u4e00\u4e9b\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u80fd\u591f\u7ed9\u521d\u5b66\u8005\u4e00\u4e9b\u5e2e\u52a9\u3002\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u4ecb\u7ecd\u300a\u67e5\u627e\u6570\u7ec4\/\u5217\u8868\u4e2d\u7684\u91cd\u590d\u5143\u7d20\u300b\uff0c\u6d89\u53ca\u5230\uff0c\u6709\u9700\u8981\u7684\u53ef\u4ee5\u6536\u85cf\u4e00\u4e0b<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241103\/1730631107672755c312fdc.jpg\" class=\"aligncenter\"><\/p>\n<p>\u7ed9\u5b9a\u4e00\u4e2a\u6574\u6570\u6570\u7ec4\uff0c\u627e\u5230\u6240\u6709\u91cd\u590d\u7684\u5143\u7d20\u3002<\/p>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><br \/> \u8f93\u5165\uff1a[1, 2, 3, 4, 3, 2, 5]<br \/> \u8f93\u51fa\uff1a[2, 3]<\/p>\n<p>\u63d0\u793a\uff1a<br \/> \u60a8\u53ef\u4ee5\u4f7f\u7528 hashset \u6765\u8ddf\u8e2a\u60a8\u5df2\u7ecf\u770b\u5230\u7684\u5143\u7d20\u3002\u5982\u679c\u67d0\u4e2a\u5143\u7d20\u5df2\u5728\u96c6\u5408\u4e2d\uff0c\u5219\u5b83\u662f\u91cd\u590d\u7684\u3002\u4e3a\u4e86\u4fdd\u7559\u987a\u5e8f\uff0c\u8bf7\u4f7f\u7528 linkedhashset \u6765\u5b58\u50a8\u91cd\u590d\u9879\u3002<\/p>\n<p>\u4f7f\u7528 hashset \u7684 java \u4ee3\u7801<\/p>\n<pre>\n\nimport java.util.Arrays;\nimport java.util.HashSet;\nimport java.util.List;\n\npublic class Test {\n public static void main(String[] args) {\n  List&lt;Integer&gt; li = Arrays.asList(1, 2, 3, 4, 3, 2, 5);\n  HashSet&lt;Integer&gt; hs = new HashSet&lt;Integer&gt;();\n  for (int i = 0; i &lt; li.size(); i++) {\n   if (hs.contains(li.get(i))) {\n    System.out.println(li.get(i));\n   }\n   hs.add(li.get(i));\n  }\n }\n}\n\n\n\n<\/pre>\n<p>\u4ee5\u4e0a\u5c31\u662f\u672c\u6587\u7684\u5168\u90e8\u5185\u5bb9\u4e86\uff0c\u662f\u5426\u6709\u987a\u5229\u5e2e\u52a9\u4f60\u89e3\u51b3\u95ee\u9898\uff1f\u82e5\u662f\u80fd\u7ed9\u4f60\u5e26\u6765\u5b66\u4e60\u4e0a\u7684\u5e2e\u52a9\uff0c\u8bf7\u5927\u5bb6\u591a\u591a\u652f\u6301\uff01\u66f4\u591a\u5173\u4e8e\u6587\u7ae0\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u4e5f\u53ef\u5173\u6ce8\u516c\u4f17\u53f7\u3002<\/p>\n<p>      \u7248\u672c\u58f0\u660e \u672c\u6587\u8f6c\u8f7d\u4e8e\uff1adev.to \u5982\u6709\u4fb5\u72af\uff0c\u8bf7\u8054\u7cfb\u5220\u9664<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u67e5\u627e\u6570\u7ec4\/\u5217\u8868\u4e2d\u7684\u91cd\u590d\u5143\u7d20 \u6536\u85cf&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-203270","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203270","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=203270"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203270\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=203270"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=203270"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=203270"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}