{"id":39344,"date":"2024-11-26T13:58:51","date_gmt":"2024-11-26T05:58:51","guid":{"rendered":"https:\/\/fwq.ai\/blog\/39344\/"},"modified":"2024-11-26T13:58:51","modified_gmt":"2024-11-26T05:58:51","slug":"java%e6%80%8e%e4%b9%88%e8%be%93%e5%87%ba%e9%9a%8f%e6%9c%ba%e4%ba%8c%e7%bb%b4%e6%95%b0%e7%bb%84","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/39344\/","title":{"rendered":"java\u600e\u4e48\u8f93\u51fa\u968f\u673a\u4e8c\u7ef4\u6570\u7ec4"},"content":{"rendered":"

\n \u8981\u8f93\u51fa java \u4e2d\u7684\u968f\u673a\u4e8c\u7ef4\u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528\u5d4c\u5957\u5faa\u73af\u751f\u6210\u968f\u673a\u6570\u5e76\u5b58\u50a8\u5728\u6570\u7ec4\u4e2d\u3002\u5177\u4f53\u6b65\u9aa4\u5982\u4e0b\uff1a\u521b\u5efa\u4e8c\u7ef4\u6570\u7ec4\u4f7f\u7528\u5d4c\u5957\u5faa\u73af\u751f\u6210\u968f\u673a\u6570\u8f93\u51fa\u6570\u7ec4\n<\/p><\/blockquote>\n

\"java\u600e\u4e48\u8f93\u51fa\u968f\u673a\u4e8c\u7ef4\u6570\u7ec4\u63d2\u56fe\"<\/p>\n

\u5982\u4f55\u8f93\u51fa Java \u4e2d\u7684\u968f\u673a\u4e8c\u7ef4\u6570\u7ec4<\/strong><\/p>\n

\u7b80\u8981\u56de\u7b54\uff1a<\/strong><\/p>\n

\u8981\u8f93\u51fa Java \u4e2d\u7684\u968f\u673a\u4e8c\u7ef4\u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528\u5d4c\u5957\u5faa\u73af\u548c Math.random() \u65b9\u6cd5\u6765\u751f\u6210\u968f\u673a\u6570\u3002<\/p>\n

\u8be6\u7ec6\u8bf4\u660e\uff1a<\/strong><\/p>\n

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

\u6b65\u9aa4 1\uff1a\u521b\u5efa\u4e8c\u7ef4\u6570\u7ec4<\/strong><\/p>\n

\u9996\u5148\uff0c\u521b\u5efa\u4e00\u4e2a\u4e8c\u7ef4\u6570\u7ec4\u6765\u5b58\u50a8\u968f\u673a\u6570\uff1a<\/p>\n

int[][] array = new int[numRows][numCols];<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u5176\u4e2d numRows \u548c numCols \u5206\u522b\u4ee3\u8868\u6570\u7ec4\u7684\u884c\u6570\u548c\u5217\u6570\u3002<\/p>\n
\u6b65\u9aa4 2\uff1a\u751f\u6210\u968f\u673a\u6570<\/strong><\/p>\n
\u4f7f\u7528\u5d4c\u5957\u5faa\u73af\u6765\u904d\u5386\u4e8c\u7ef4\u6570\u7ec4\u7684\u6bcf\u4e2a\u5143\u7d20\uff1a<\/p>\n
for (int i = 0; i < numRows; i++) {\n    for (int j = 0; j < numCols; j++) {\n        array[i][j] = (int) (Math.random() * 10); \/\/ \u751f\u6210 0-9 \u4e4b\u95f4\u7684\u968f\u673a\u6570\n    }\n}<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u6b65\u9aa4 3\uff1a\u8f93\u51fa\u6570\u7ec4<\/strong><\/p>\n
\u4f7f\u7528\u53e6\u4e00\u4e2a\u5d4c\u5957\u5faa\u73af\u5c06\u4e8c\u7ef4\u6570\u7ec4\u6253\u5370\u5230\u63a7\u5236\u53f0\uff1a<\/p>\n
for (int[] row : array) {\n    for (int element : row) {\n        System.out.print(element + \" \");\n    }\n    System.out.println();\n}<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u793a\u4f8b\uff1a<\/strong><\/p>\n
\u4ee5\u4e0b\u793a\u4f8b\u521b\u5efa\u4e00\u4e2a 3×3 \u7684\u968f\u673a\u4e8c\u7ef4\u6570\u7ec4\u5e76\u5c06\u5176\u6253\u5370\u5230\u63a7\u5236\u53f0\uff1a<\/p>\n
import java.util.Arrays;\n\npublic class Random2DArray {\n\n    public static void main(String[] args) {\n        int[][] array = new int[3][3];\n\n        \/\/ \u751f\u6210\u968f\u673a\u6570\n        for (int i = 0; i < 3; i++) {\n            for (int j = 0; j < 3; j++) {\n                array[i][j] = (int) (Math.random() * 10);\n            }\n        }\n\n        \/\/ \u8f93\u51fa\u6570\u7ec4\n        for (int[] row : array) {\n            System.out.println(Arrays.toString(row));\n        }\n    }\n}<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u8f93\u51fa\uff1a<\/p>\n
[1, 6, 5]\n[9, 4, 2]\n[7, 0, 3]<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u8f93\u51fa\u968f\u673a\u4e8c\u7ef4\u6570\u7ec4\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u8981\u8f93\u51fa java \u4e2d\u7684\u968f\u673a\u4e8c\u7ef4\u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528\u5d4c\u5957\u5faa\u73af\u751f\u6210\u968f\u673a\u6570\u5e76\u5b58\u50a8\u5728\u6570\u7ec4\u4e2d\u3002\u5177\u4f53\u6b65\u9aa4\u5982\u4e0b\uff1a\u521b\u5efa\u4e8c\u7ef4\u6570\u7ec4\u4f7f\u7528\u5d4c\u5957\u5faa\u73af\u751f\u6210\u968f\u673a\u6570\u8f93\u51fa\u6570\u7ec4 \u5982\u4f55\u8f93\u51fa Java \u4e2d\u7684\u968f\u673a\u4e8c\u7ef4\u6570\u7ec4 \u7b80\u8981\u56de\u7b54\uff1a \u8981\u8f93\u51fa Java \u4e2d\u7684\u968f\u673a\u4e8c\u7ef4\u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528\u5d4c\u5957\u5faa\u73af\u548c Math.random() \u65b9\u6cd5\u6765\u751f\u6210\u968f\u673a\u6570\u3002 \u8be6\u7ec6\u8bf4\u660e\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u6b65\u9aa4 1\uff1a\u521b\u5efa\u4e8c\u7ef4\u6570\u7ec4 \u9996\u5148\uff0c\u521b\u5efa\u4e00\u4e2a\u4e8c\u7ef4\u6570\u7ec4\u6765\u5b58\u50a8\u968f\u673a\u6570\uff1a int[][] array = new int[numRows][numCols]; \u767b\u5f55\u540e\u590d\u5236 \u5176\u4e2d numRows \u548c numCols \u5206\u522b\u4ee3\u8868\u6570\u7ec4\u7684\u884c\u6570\u548c\u5217\u6570\u3002 \u6b65\u9aa4 2\uff1a\u751f\u6210\u968f\u673a\u6570 \u4f7f\u7528\u5d4c\u5957\u5faa\u73af\u6765\u904d\u5386\u4e8c\u7ef4\u6570\u7ec4\u7684\u6bcf\u4e2a\u5143\u7d20\uff1a for (int i = 0; i < numRows; i++) { for (int j = 0; j < numCols; j++) { array[i][j] = (int) (Math.random() […]<\/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-39344","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/39344","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=39344"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/39344\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=39344"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=39344"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=39344"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}