{"id":65295,"date":"2025-05-03T08:14:44","date_gmt":"2025-05-03T00:14:44","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65295\/"},"modified":"2025-05-03T08:14:44","modified_gmt":"2025-05-03T00:14:44","slug":"java%e7%9a%84%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88%e8%b0%83-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65295\/","title":{"rendered":"java\u7684\u6570\u7ec4\u600e\u4e48\u8c03"},"content":{"rendered":"<blockquote><p>\n  \u5982\u4f55\u64cd\u63a7 java \u6570\u7ec4:\u521b\u5efa\u6570\u7ec4: \u4f7f\u7528 new int[5]\u3002\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20: \u4f7f\u7528 myarray[0]\u3002\u66f4\u6539\u6570\u7ec4\u5143\u7d20: \u4f7f\u7528 myarray[0] = 10\u3002\u904d\u5386\u6570\u7ec4: \u4f7f\u7528 for \u5faa\u73af\u3001foreach \u5faa\u73af\u6216\u8fed\u4ee3\u5668\u3002\u83b7\u53d6\u6570\u7ec4\u957f\u5ea6: \u4f7f\u7528 length \u5c5e\u6027\u3002\u590d\u5236\u6570\u7ec4: \u4f7f\u7528 arrays.copyof() \u65b9\u6cd5\u3002\u6392\u5e8f\u6570\u7ec4: \u4f7f\u7528 arrays.sort() \u65b9\u6cd5\u3002\u641c\u7d22\u6570\u7ec4: \u4f7f\u7528 arrays.binarysearch() \u65b9\u6cd5\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/12\/2024111219042673027.jpg\" class=\"aligncenter\" title=\"java\u7684\u6570\u7ec4\u600e\u4e48\u8c03\u63d2\u56fe\" alt=\"java\u7684\u6570\u7ec4\u600e\u4e48\u8c03\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5728 Java \u4e2d\u64cd\u63a7\u6570\u7ec4<\/strong><\/p>\n<p>Java \u6570\u7ec4\u662f\u4e00\u79cd\u53ef\u4ee5\u5b58\u50a8\u76f8\u540c\u6570\u636e\u7c7b\u578b\u5143\u7d20\u7684\u56fa\u5b9a\u5927\u5c0f\u7684\u6570\u636e\u7ed3\u6784\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5404\u79cd\u65b9\u6cd5\u6765\u64cd\u63a7\u6570\u7ec4\uff1a<\/p>\n<p><strong>\u521b\u5efa\u6570\u7ec4<\/strong><\/p>\n<pre>\/\/ \u58f0\u660e int \u7c7b\u578b\u7684\u6570\u7ec4\uff0c\u53ef\u4ee5\u5b58\u50a8 5 \u4e2a\u5143\u7d20\nint[] myArray = new int[5];<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<p>\u53ef\u4ee5\u901a\u8fc7\u7d22\u5f15\u6765\u8bbf\u95ee\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\uff1a<\/p>\n<pre>\/\/ \u8bbf\u95ee myArray \u6570\u7ec4\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20\nint firstElement = myArray[0];<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u66f4\u6539\u6570\u7ec4\u5143\u7d20<\/strong><\/p>\n<p>\u540c\u6837\uff0c\u53ef\u4ee5\u901a\u8fc7\u7d22\u5f15\u6765\u66f4\u6539\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\uff1a<\/p>\n<pre>\/\/ \u5c06 myArray \u6570\u7ec4\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20\u8bbe\u7f6e\u4e3a 10\nmyArray[0] = 10;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u904d\u5386\u6570\u7ec4<\/strong><\/p>\n<p>\u6709\u51e0\u79cd\u65b9\u6cd5\u53ef\u4ee5\u904d\u5386\u6570\u7ec4\uff1a<\/p>\n<ul>\n<li><strong>for \u5faa\u73af\uff1a<\/strong><\/li>\n<\/ul>\n<pre>for (int i = 0; i &lt; myArray.length; i++) {\n    System.out.println(myArray[i]);\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<ul>\n<li><strong>foreach \u5faa\u73af\uff1a<\/strong><\/li>\n<\/ul>\n<pre>for (int element : myArray) {\n    System.out.println(element);\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<ul>\n<li><strong>\u8fed\u4ee3\u5668\uff1a<\/strong><\/li>\n<\/ul>\n<pre>Iterator&lt;Integer&gt; iterator = Arrays.stream(myArray).iterator();\nwhile (iterator.hasNext()) {\n    System.out.println(iterator.next());\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u6570\u7ec4\u957f\u5ea6<\/strong><\/p>\n<p>\u53ef\u4ee5\u4f7f\u7528 length \u5c5e\u6027\u83b7\u53d6\u6570\u7ec4\u7684\u957f\u5ea6\uff1a<\/p>\n<pre>\/\/ \u83b7\u53d6 myArray \u6570\u7ec4\u7684\u957f\u5ea6\nint length = myArray.length;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u590d\u5236\u6570\u7ec4<\/strong><\/p>\n<p>\u53ef\u4ee5\u4f7f\u7528 Arrays.copyOf() \u65b9\u6cd5\u590d\u5236\u6570\u7ec4\uff1a<\/p>\n<pre>\/\/ \u590d\u5236 myArray \u6570\u7ec4\u5230 newArray\nint[] newArray = Arrays.copyOf(myArray, myArray.length);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u6392\u5e8f\u6570\u7ec4<\/strong><\/p>\n<p>\u53ef\u4ee5\u4f7f\u7528 Arrays.sort() \u65b9\u6cd5\u5bf9\u6570\u7ec4\u8fdb\u884c\u6392\u5e8f\uff1a<\/p>\n<pre>\/\/ \u5bf9 myArray \u6570\u7ec4\u8fdb\u884c\u5347\u5e8f\u6392\u5e8f\nArrays.sort(myArray);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u641c\u7d22\u6570\u7ec4<\/strong><\/p>\n<p>\u53ef\u4ee5\u4f7f\u7528 Arrays.binarySearch() \u65b9\u6cd5\u5728\u6570\u7ec4\u4e2d\u641c\u7d22\u5143\u7d20\uff1a<\/p>\n<pre>\/\/ \u5728 myArray \u6570\u7ec4\u4e2d\u641c\u7d22\u5143\u7d20 10\nint index = Arrays.binarySearch(myArray, 10);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u7684\u6570\u7ec4\u600e\u4e48\u8c03\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u4f55\u64cd\u63a7 java \u6570\u7ec4:\u521b\u5efa\u6570\u7ec4: \u4f7f\u7528 new int[5]\u3002\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20: \u4f7f\u7528 myarray[0]\u3002\u66f4\u6539\u6570\u7ec4\u5143\u7d20: \u4f7f\u7528 myarray[0] = 10\u3002\u904d\u5386\u6570\u7ec4: \u4f7f\u7528 for \u5faa\u73af\u3001foreach \u5faa\u73af\u6216\u8fed\u4ee3\u5668\u3002\u83b7\u53d6\u6570\u7ec4\u957f\u5ea6: \u4f7f\u7528 length \u5c5e\u6027\u3002\u590d\u5236\u6570\u7ec4: \u4f7f\u7528 arrays.copyof() \u65b9\u6cd5\u3002\u6392\u5e8f\u6570\u7ec4: \u4f7f\u7528 arrays.sort() \u65b9\u6cd5\u3002\u641c\u7d22\u6570\u7ec4: \u4f7f\u7528 arrays.binarysearch() \u65b9\u6cd5\u3002 \u5982\u4f55\u5728 Java \u4e2d\u64cd\u63a7\u6570\u7ec4 Java \u6570\u7ec4\u662f\u4e00\u79cd\u53ef\u4ee5\u5b58\u50a8\u76f8\u540c\u6570\u636e\u7c7b\u578b\u5143\u7d20\u7684\u56fa\u5b9a\u5927\u5c0f\u7684\u6570\u636e\u7ed3\u6784\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5404\u79cd\u65b9\u6cd5\u6765\u64cd\u63a7\u6570\u7ec4\uff1a \u521b\u5efa\u6570\u7ec4 \/\/ \u58f0\u660e int \u7c7b\u578b\u7684\u6570\u7ec4\uff0c\u53ef\u4ee5\u5b58\u50a8 5 \u4e2a\u5143\u7d20 int[] myArray = new int[5]; \u767b\u5f55\u540e\u590d\u5236 \u8bbf\u95ee\u6570\u7ec4\u5143\u7d20 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u53ef\u4ee5\u901a\u8fc7\u7d22\u5f15\u6765\u8bbf\u95ee\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\uff1a \/\/ \u8bbf\u95ee myArray \u6570\u7ec4\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20 int firstElement [&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-65295","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65295","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=65295"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65295\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65295"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65295"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65295"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}