{"id":65291,"date":"2025-05-03T13:57:22","date_gmt":"2025-05-03T05:57:22","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65291\/"},"modified":"2025-05-03T13:57:22","modified_gmt":"2025-05-03T05:57:22","slug":"java%e6%80%8e%e4%b9%88%e6%8e%92%e5%ba%8f%e6%95%b0%e7%bb%84-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65291\/","title":{"rendered":"java\u600e\u4e48\u6392\u5e8f\u6570\u7ec4"},"content":{"rendered":"

\n java \u4e2d\u6709\u591a\u79cd\u65b9\u6cd5\u5bf9\u6570\u7ec4\u8fdb\u884c\u6392\u5e8f\uff1a\u4f7f\u7528 arrays.sort() \u65b9\u6cd5\uff0c\u8fd9\u662f\u4f7f\u7528\u5feb\u901f\u6392\u5e8f\u7b97\u6cd5\u7684\u7b80\u5355\u65b9\u6cd5\uff1b\u4f7f\u7528 comparator \u63a5\u53e3\u5b9e\u73b0\u81ea\u5b9a\u4e49\u6bd4\u8f83\u5668\uff0c\u4ee5\u6839\u636e\u7279\u5b9a\u6761\u4ef6\u6392\u5e8f\uff1b\u6b64\u5916\uff0c\u8fd8\u6709\u9009\u62e9\u6392\u5e8f\u3001\u5192\u6ce1\u6392\u5e8f\u3001\u5f52\u5e76\u6392\u5e8f\u548c\u5806\u6392\u5e8f\u7b49\u5176\u4ed6\u7b97\u6cd5\u53ef\u7528\u3002\n<\/p><\/blockquote>\n

\"java\u600e\u4e48\u6392\u5e8f\u6570\u7ec4\u63d2\u56fe\"<\/p>\n

\u5982\u4f55\u7528 Java \u6392\u5e8f\u6570\u7ec4<\/strong><\/p>\n

\u5728 Java \u4e2d\uff0c\u6709\u51e0\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5bf9\u6570\u7ec4\u8fdb\u884c\u6392\u5e8f\u3002<\/p>\n

Arrays.sort() \u65b9\u6cd5<\/strong><\/p>\n

Arrays.sort() \u65b9\u6cd5\u662f\u6392\u5e8f\u6570\u7ec4\u6700\u7b80\u5355\u7684\u65b9\u6cd5\u3002\u5b83\u4f7f\u7528\u5feb\u901f\u6392\u5e8f\u7b97\u6cd5\uff0c\u8be5\u7b97\u6cd5\u4ee5 O(n log n) \u7684\u65f6\u95f4\u590d\u6742\u5ea6\u5c06\u6570\u7ec4\u6392\u5e8f\u3002<\/p>\n

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

\u8bed\u6cd5\uff1a<\/strong><\/p>\n

public static void sort(int[] arr)<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u793a\u4f8b\uff1a<\/strong><\/p>\n
int[] arr = {5, 2, 8, 3, 1};\nArrays.sort(arr); \/\/ \u5bf9\u6570\u7ec4 arr \u8fdb\u884c\u6392\u5e8f<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u81ea\u5b9a\u4e49\u6bd4\u8f83\u5668<\/strong><\/p>\n
\u5982\u679c\u4f60\u9700\u8981\u4f7f\u7528\u81ea\u5b9a\u4e49\u6bd4\u8f83\u5668\u6392\u5e8f\u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528 Comparator \u63a5\u53e3\u3002\u8be5\u63a5\u53e3\u63d0\u4f9b\u4e86 compare() \u65b9\u6cd5\uff0c\u7528\u4e8e\u6bd4\u8f83\u4e24\u4e2a\u5143\u7d20\u5e76\u786e\u5b9a\u5176\u6392\u5e8f\u987a\u5e8f\u3002<\/p>\n
\u793a\u4f8b\uff1a<\/strong><\/p>\n
import java.util.Arrays;\nimport java.util.Comparator;\n\npublic class CustomComparatorExample {\n\n    public static void main(String[] args) {\n        String[] arr = {\"apple\", \"banana\", \"cherry\", \"dog\", \"cat\"};\n\n        \/\/ \u6839\u636e\u5b57\u7b26\u4e32\u957f\u5ea6\u6392\u5e8f\n        Arrays.sort(arr, new Comparator<String>() {\n            @Override\n            public int compare(String s1, String s2) {\n                return s1.length() - s2.length();\n            }\n        });\n\n        \/\/ \u6253\u5370\u6392\u5e8f\u540e\u7684\u6570\u7ec4\n        System.out.println(Arrays.toString(arr));\n    }\n}<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u5176\u4ed6\u6392\u5e8f\u7b97\u6cd5<\/strong><\/p>\n
\u9664\u4e86\u4e0a\u8ff0\u65b9\u6cd5\u4e4b\u5916\uff0cJava \u8fd8\u63d0\u4f9b\u4e86\u5176\u4ed6\u6392\u5e8f\u7b97\u6cd5\uff0c\u4f8b\u5982\uff1a<\/p>\n
    \n
  • \u9009\u62e9\u6392\u5e8f\uff08O(n^2)\uff09<\/li>\n
  •  \uff08O(n^2)\uff09<\/li>\n
  • \u5f52\u5e76\u6392\u5e8f\uff08O(n log n)\uff09<\/li>\n
  • \u5806\u6392\u5e8f\uff08O(n log n)\uff09<\/li>\n<\/ul>\n
    \u8fd9\u4e9b\u7b97\u6cd5\u7684\u5b9e\u73b0\u53ef\u4ee5\u901a\u8fc7 Java Collections Framework \u4e2d\u7684\u76f8\u5e94\u7c7b\u6765\u5b9e\u73b0\u3002<\/p>\n
    \u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u6392\u5e8f\u6570\u7ec4\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
    java \u4e2d\u6709\u591a\u79cd\u65b9\u6cd5\u5bf9\u6570\u7ec4\u8fdb\u884c\u6392\u5e8f\uff1a\u4f7f\u7528 arrays.sort() \u65b9\u6cd5\uff0c\u8fd9\u662f\u4f7f\u7528\u5feb\u901f\u6392\u5e8f\u7b97\u6cd5\u7684\u7b80\u5355\u65b9\u6cd5\uff1b\u4f7f\u7528 comparator \u63a5\u53e3\u5b9e\u73b0\u81ea\u5b9a\u4e49\u6bd4\u8f83\u5668\uff0c\u4ee5\u6839\u636e\u7279\u5b9a\u6761\u4ef6\u6392\u5e8f\uff1b\u6b64\u5916\uff0c\u8fd8\u6709\u9009\u62e9\u6392\u5e8f\u3001\u5192\u6ce1\u6392\u5e8f\u3001\u5f52\u5e76\u6392\u5e8f\u548c\u5806\u6392\u5e8f\u7b49\u5176\u4ed6\u7b97\u6cd5\u53ef\u7528\u3002 \u5982\u4f55\u7528 Java \u6392\u5e8f\u6570\u7ec4 \u5728 Java \u4e2d\uff0c\u6709\u51e0\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5bf9\u6570\u7ec4\u8fdb\u884c\u6392\u5e8f\u3002 Arrays.sort() \u65b9\u6cd5 Arrays.sort() \u65b9\u6cd5\u662f\u6392\u5e8f\u6570\u7ec4\u6700\u7b80\u5355\u7684\u65b9\u6cd5\u3002\u5b83\u4f7f\u7528\u5feb\u901f\u6392\u5e8f\u7b97\u6cd5\uff0c\u8be5\u7b97\u6cd5\u4ee5 O(n log n) \u7684\u65f6\u95f4\u590d\u6742\u5ea6\u5c06\u6570\u7ec4\u6392\u5e8f\u3002 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u8bed\u6cd5\uff1a public static void sort(int[] arr) \u767b\u5f55\u540e\u590d\u5236 \u793a\u4f8b\uff1a int[] arr = {5, 2, 8, 3, 1}; Arrays.sort(arr); \/\/ \u5bf9\u6570\u7ec4 arr \u8fdb\u884c\u6392\u5e8f \u767b\u5f55\u540e\u590d\u5236 \u81ea\u5b9a\u4e49\u6bd4\u8f83\u5668 \u5982\u679c\u4f60\u9700\u8981\u4f7f\u7528\u81ea\u5b9a\u4e49\u6bd4\u8f83\u5668\u6392\u5e8f\u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528 Comparator \u63a5\u53e3\u3002\u8be5\u63a5\u53e3\u63d0\u4f9b\u4e86 compare() \u65b9\u6cd5\uff0c\u7528\u4e8e\u6bd4\u8f83\u4e24\u4e2a\u5143\u7d20\u5e76\u786e\u5b9a\u5176\u6392\u5e8f\u987a\u5e8f\u3002 \u793a\u4f8b\uff1a import java.util.Arrays; import java.util.Comparator; public […]<\/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-65291","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65291","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=65291"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65291\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65291"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65291"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65291"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}