{"id":36778,"date":"2024-11-26T15:27:29","date_gmt":"2024-11-26T07:27:29","guid":{"rendered":"https:\/\/fwq.ai\/blog\/36778\/"},"modified":"2024-11-26T15:27:29","modified_gmt":"2024-11-26T07:27:29","slug":"java%e6%95%b0%e7%bb%84%e5%85%83%e7%b4%a0%e6%80%8e%e4%b9%88%e5%a1%ab","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/36778\/","title":{"rendered":"java\u6570\u7ec4\u5143\u7d20\u600e\u4e48\u586b"},"content":{"rendered":"<blockquote><p>\n  java \u4e2d\u4e3a\u6570\u7ec4\u5143\u7d20\u8d4b\u503c\u7684\u65b9\u6cd5\u6709\u591a\u79cd\uff1a\u58f0\u660e\u548c\u521d\u59cb\u5316\u6570\u7ec4\u3001\u4f7f\u7528\u6570\u7ec4\u7d22\u5f15\u8bbf\u95ee\u5143\u7d20\u3001\u4f7f\u7528\u5faa\u73af\u8d4b\u503c\u591a\u4e2a\u5143\u7d20\u3001\u4f7f\u7528 arrays.fill() \u65b9\u6cd5\u586b\u5145\u6570\u7ec4\u4ee5\u53ca\u4f7f\u7528 stream api \u8d4b\u503c\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/12\/2024111218214629597.jpg\" class=\"aligncenter\" title=\"java\u6570\u7ec4\u5143\u7d20\u600e\u4e48\u586b\u63d2\u56fe\" alt=\"java\u6570\u7ec4\u5143\u7d20\u600e\u4e48\u586b\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u7ed9 Java \u6570\u7ec4\u5143\u7d20\u8d4b\u503c<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u6570\u7ec4\u662f\u4e00\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u7528\u4e8e\u5b58\u50a8\u76f8\u540c\u7c7b\u578b\u7684\u6570\u636e\u5143\u7d20\u7684\u96c6\u5408\u3002\u4e3a\u4e86\u7ed9\u6570\u7ec4\u5143\u7d20\u8d4b\u503c\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u6b65\u9aa4\uff1a<\/p>\n<p><strong>1. \u58f0\u660e\u548c\u521d\u59cb\u5316\u6570\u7ec4<\/strong><\/p>\n<p>\u8981\u58f0\u660e\u4e00\u4e2a\u6570\u7ec4\uff0c\u9700\u8981\u6307\u5b9a\u6570\u7ec4\u7684\u7c7b\u578b\u548c\u5927\u5c0f\u3002\u4f8b\u5982\uff1a<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>int[] numbers = new int[5];<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u8fd9\u5c06\u521b\u5efa\u4e00\u4e2a\u5927\u5c0f\u4e3a 5 \u7684\u6574\u6570\u6570\u7ec4\u3002<\/p>\n<p><strong>2. \u4f7f\u7528\u6570\u7ec4\u7d22\u5f15\u8bbf\u95ee\u5143\u7d20<\/strong><\/p>\n<p>\u6570\u7ec4\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u90fd\u6709\u4e00\u4e2a\u552f\u4e00\u7684\u7d22\u5f15\uff0c\u8303\u56f4\u4ece 0 \u5230\u6570\u7ec4\u5927\u5c0f\u51cf 1\u3002\u8981\u8bbf\u95ee\u7279\u5b9a\u7d22\u5f15\u5904\u7684\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528\u65b9\u62ec\u53f7\u8bed\u6cd5\uff1a<\/p>\n<pre>numbers[0] = 10;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u8fd9\u4f1a\u5c06\u6570\u7ec4\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20\uff08\u7d22\u5f15\u4e3a 0\uff09\u8bbe\u7f6e\u4e3a\u503c 10\u3002<\/p>\n<p><strong>3. \u4f7f\u7528\u5faa\u73af\u8d4b\u503c\u591a\u4e2a\u5143\u7d20<\/strong><\/p>\n<p>\u53ef\u4ee5\u4f7f\u7528\u5faa\u73af\u6765\u7ed9\u591a\u4e2a\u6570\u7ec4\u5143\u7d20\u8d4b\u503c\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u5faa\u73af\u5c06 numbers \u6570\u7ec4\u4e2d\u7684\u6240\u6709\u5143\u7d20\u90fd\u8bbe\u7f6e\u4e3a 0\uff1a<\/p>\n<pre>for (int i = 0; i &lt; numbers.length; i++) {\n    numbers[i] = 0;\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>4. \u4f7f\u7528 Arrays.fill() \u65b9\u6cd5\u586b\u5145\u6570\u7ec4<\/strong><\/p>\n<p>Java \u63d0\u4f9b\u4e86\u4e00\u4e2a Arrays.fill() \u65b9\u6cd5\uff0c\u53ef\u4ee5\u7528\u6765\u7528\u6307\u5b9a\u7684\u503c\u586b\u5145\u6574\u4e2a\u6570\u7ec4\u6216\u6570\u7ec4\u7684\u4e00\u90e8\u5206\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u4ee3\u7801\u5c06 numbers \u6570\u7ec4\u4e2d\u7684\u6240\u6709\u5143\u7d20\u586b\u5145\u4e3a 5\uff1a<\/p>\n<pre>Arrays.fill(numbers, 5);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>5. \u4f7f\u7528 Stream API \u8d4b\u503c<\/strong><\/p>\n<p>Java 8 \u53ca\u66f4\u9ad8\u7248\u672c\u4e2d\u5f15\u5165\u4e86 Stream API\uff0c\u53ef\u4ee5\u7528\u6765\u4ee5\u66f4\u7b80\u6d01\u7684\u65b9\u5f0f\u7ed9\u6570\u7ec4\u5143\u7d20\u8d4b\u503c\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u4ee3\u7801\u5c06 numbers \u6570\u7ec4\u4e2d\u7684\u6240\u6709\u5947\u6570\u7d22\u5f15\u5904\u7684\u5143\u7d20\u8bbe\u7f6e\u4e3a 1\uff1a<\/p>\n<pre>IntStream.range(0, numbers.length)\n    .filter(i -&gt; i % 2 == 1)\n    .forEach(i -&gt; numbers[i] = 1);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u6570\u7ec4\u5143\u7d20\u600e\u4e48\u586b\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":"<p>java \u4e2d\u4e3a\u6570\u7ec4\u5143\u7d20\u8d4b\u503c\u7684\u65b9\u6cd5\u6709\u591a\u79cd\uff1a\u58f0\u660e\u548c\u521d\u59cb\u5316\u6570\u7ec4\u3001\u4f7f\u7528\u6570\u7ec4\u7d22\u5f15\u8bbf\u95ee\u5143\u7d20\u3001\u4f7f\u7528\u5faa\u73af\u8d4b\u503c\u591a\u4e2a\u5143\u7d20\u3001\u4f7f\u7528 arrays.fill() \u65b9\u6cd5\u586b\u5145\u6570\u7ec4\u4ee5\u53ca\u4f7f\u7528 stream api \u8d4b\u503c\u3002 \u5982\u4f55\u7ed9 Java \u6570\u7ec4\u5143\u7d20\u8d4b\u503c \u5728 Java \u4e2d\uff0c\u6570\u7ec4\u662f\u4e00\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u7528\u4e8e\u5b58\u50a8\u76f8\u540c\u7c7b\u578b\u7684\u6570\u636e\u5143\u7d20\u7684\u96c6\u5408\u3002\u4e3a\u4e86\u7ed9\u6570\u7ec4\u5143\u7d20\u8d4b\u503c\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u6b65\u9aa4\uff1a 1. \u58f0\u660e\u548c\u521d\u59cb\u5316\u6570\u7ec4 \u8981\u58f0\u660e\u4e00\u4e2a\u6570\u7ec4\uff0c\u9700\u8981\u6307\u5b9a\u6570\u7ec4\u7684\u7c7b\u578b\u548c\u5927\u5c0f\u3002\u4f8b\u5982\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] numbers = new int[5]; \u767b\u5f55\u540e\u590d\u5236 \u8fd9\u5c06\u521b\u5efa\u4e00\u4e2a\u5927\u5c0f\u4e3a 5 \u7684\u6574\u6570\u6570\u7ec4\u3002 2. \u4f7f\u7528\u6570\u7ec4\u7d22\u5f15\u8bbf\u95ee\u5143\u7d20 \u6570\u7ec4\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u90fd\u6709\u4e00\u4e2a\u552f\u4e00\u7684\u7d22\u5f15\uff0c\u8303\u56f4\u4ece 0 \u5230\u6570\u7ec4\u5927\u5c0f\u51cf 1\u3002\u8981\u8bbf\u95ee\u7279\u5b9a\u7d22\u5f15\u5904\u7684\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528\u65b9\u62ec\u53f7\u8bed\u6cd5\uff1a numbers[0] = 10; \u767b\u5f55\u540e\u590d\u5236 \u8fd9\u4f1a\u5c06\u6570\u7ec4\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20\uff08\u7d22\u5f15\u4e3a 0\uff09\u8bbe\u7f6e\u4e3a\u503c 10\u3002 3. \u4f7f\u7528\u5faa\u73af\u8d4b\u503c\u591a\u4e2a\u5143\u7d20 \u53ef\u4ee5\u4f7f\u7528\u5faa\u73af\u6765\u7ed9\u591a\u4e2a\u6570\u7ec4\u5143\u7d20\u8d4b\u503c\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u5faa\u73af\u5c06 numbers \u6570\u7ec4\u4e2d\u7684\u6240\u6709\u5143\u7d20\u90fd\u8bbe\u7f6e\u4e3a 0\uff1a for (int i = 0; i &lt; numbers.length; i++) { [&hellip;]<\/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-36778","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/36778","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=36778"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/36778\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=36778"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=36778"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=36778"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}