{"id":66580,"date":"2025-05-03T13:03:32","date_gmt":"2025-05-03T05:03:32","guid":{"rendered":"https:\/\/fwq.ai\/blog\/66580\/"},"modified":"2025-05-03T13:03:32","modified_gmt":"2025-05-03T05:03:32","slug":"java%e6%80%8e%e4%b9%88%e5%9c%a8%e6%95%b0%e7%bb%84%e5%8e%bb%e9%87%8d%e5%a4%8d%e6%95%b0%e6%8d%ae-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/66580\/","title":{"rendered":"java\u600e\u4e48\u5728\u6570\u7ec4\u53bb\u91cd\u590d\u6570\u636e"},"content":{"rendered":"

\n \u5728 java \u6570\u7ec4\u4e2d\u53bb\u91cd\u590d\u6570\u636e\u6709\u4e09\u79cd\u65b9\u6cd5\uff1a\u4f7f\u7528 set \u5c06\u5143\u7d20\u6dfb\u52a0\u5230\u96c6\u5408\u5e76\u8f6c\u6362\u4e3a\u6570\u7ec4\uff1b\u5229\u7528 arrays.stream().distinct() \u521b\u5efa\u53bb\u91cd\u5143\u7d20\u6d41\u5e76\u8f6c\u6362\u4e3a\u6570\u7ec4\uff1b\u901a\u8fc7\u5faa\u73af\u548c set \u68c0\u67e5\u5143\u7d20\u662f\u5426\u5b58\u5728\u4e8e\u96c6\u5408\u4e2d\u5e76\u521b\u5efa\u65b0\u6570\u7ec4\u3002\n<\/p><\/blockquote>\n

\"java\u600e\u4e48\u5728\u6570\u7ec4\u53bb\u91cd\u590d\u6570\u636e\u63d2\u56fe\"<\/p>\n

\u5982\u4f55\u5728 Java \u6570\u7ec4\u4e2d\u53bb\u91cd\u590d\u6570\u636e<\/strong><\/p>\n

\u5728 Java \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\u5728\u6570\u7ec4\u4e2d\u53bb\u91cd\u590d\u6570\u636e\uff1a<\/p>\n

1. \u4f7f\u7528 Set<\/strong><\/p>\n

Set \u662f\u4e00\u4e2a\u96c6\u5408\uff0c\u5b83\u4e0d\u5141\u8bb8\u51fa\u73b0\u91cd\u590d\u5143\u7d20\u3002\u53ef\u4ee5\u5c06\u6570\u7ec4\u5143\u7d20\u6dfb\u52a0\u5230 Set \u4e2d\uff0c\u7136\u540e\u518d\u5c06\u5176\u8f6c\u6362\u4e3a\u6570\u7ec4\u3002<\/p>\n

\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n

int[] arr = {1, 2, 3, 4, 5, 1, 2, 3};\n\nSet<Integer> set = new HashSet<>();\nfor (int i : arr) {\n    set.add(i);\n}\n\nint[] newArr = set.stream().mapToInt(Integer::intValue).toArray();<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
2. \u4f7f\u7528 Arrays.stream().distinct()<\/strong><\/p>\n
Arrays.stream().distinct() \u65b9\u6cd5\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u5305\u542b\u6570\u7ec4\u4e2d\u53bb\u91cd\u5143\u7d20\u7684\u65b0\u6d41\u3002<\/p>\n
int[] arr = {1, 2, 3, 4, 5, 1, 2, 3};\n\nint[] newArr = Arrays.stream(arr).distinct().toArray();<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
3. \u4f7f\u7528\u5faa\u73af\u548c Set<\/strong><\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u4e0e\u4f7f\u7528 Set \u76f8\u4f3c\uff0c\u4f46\u4f7f\u7528\u5faa\u73af\u6765\u68c0\u67e5\u6bcf\u4e2a\u5143\u7d20\u662f\u5426\u5df2\u7ecf\u5b58\u5728\u4e8e Set \u4e2d\u3002<\/p>\n
int[] arr = {1, 2, 3, 4, 5, 1, 2, 3};\n\nSet<Integer> set = new HashSet<>();\nint[] newArr = new int[arr.length];\nint index = 0;\n\nfor (int i : arr) {\n    if (!set.contains(i)) {\n        set.add(i);\n        newArr[index++] = i;\n    }\n}<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4e0a\u9762\u8fd9\u4e09\u79cd\u65b9\u6cd5\u90fd\u53ef\u4ee5\u6709\u6548\u5730\u4ece\u6570\u7ec4\u4e2d\u53bb\u91cd\u590d\u6570\u636e\uff0c\u9009\u62e9\u54ea\u79cd\u65b9\u6cd5\u53d6\u51b3\u4e8e\u5177\u4f53\u9700\u6c42\u548c\u6027\u80fd\u8003\u8651\u56e0\u7d20\u3002<\/p>\n
\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u5728\u6570\u7ec4\u53bb\u91cd\u590d\u6570\u636e\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5728 java \u6570\u7ec4\u4e2d\u53bb\u91cd\u590d\u6570\u636e\u6709\u4e09\u79cd\u65b9\u6cd5\uff1a\u4f7f\u7528 set \u5c06\u5143\u7d20\u6dfb\u52a0\u5230\u96c6\u5408\u5e76\u8f6c\u6362\u4e3a\u6570\u7ec4\uff1b\u5229\u7528 arrays.stream().distinct() \u521b\u5efa\u53bb\u91cd\u5143\u7d20\u6d41\u5e76\u8f6c\u6362\u4e3a\u6570\u7ec4\uff1b\u901a\u8fc7\u5faa\u73af\u548c set \u68c0\u67e5\u5143\u7d20\u662f\u5426\u5b58\u5728\u4e8e\u96c6\u5408\u4e2d\u5e76\u521b\u5efa\u65b0\u6570\u7ec4\u3002 \u5982\u4f55\u5728 Java \u6570\u7ec4\u4e2d\u53bb\u91cd\u590d\u6570\u636e \u5728 Java \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\u5728\u6570\u7ec4\u4e2d\u53bb\u91cd\u590d\u6570\u636e\uff1a 1. \u4f7f\u7528 Set Set \u662f\u4e00\u4e2a\u96c6\u5408\uff0c\u5b83\u4e0d\u5141\u8bb8\u51fa\u73b0\u91cd\u590d\u5143\u7d20\u3002\u53ef\u4ee5\u5c06\u6570\u7ec4\u5143\u7d20\u6dfb\u52a0\u5230 Set \u4e2d\uff0c\u7136\u540e\u518d\u5c06\u5176\u8f6c\u6362\u4e3a\u6570\u7ec4\u3002 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] arr = {1, 2, 3, 4, 5, 1, 2, 3}; Set<Integer> set = new HashSet<>(); for (int i : arr) { set.add(i); } int[] newArr = set.stream().mapToInt(Integer::intValue).toArray(); \u767b\u5f55\u540e\u590d\u5236 2. \u4f7f\u7528 Arrays.stream().distinct() […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-66580","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66580","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=66580"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66580\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=66580"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=66580"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=66580"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}