{"id":34672,"date":"2024-11-26T10:23:40","date_gmt":"2024-11-26T02:23:40","guid":{"rendered":"https:\/\/fwq.ai\/blog\/34672\/"},"modified":"2024-11-26T10:23:40","modified_gmt":"2024-11-26T02:23:40","slug":"java%e6%80%8e%e4%b9%88%e5%8a%a8%e6%80%81%e6%94%b9%e5%8f%98%e6%95%b0%e7%bb%84%e9%95%bf%e5%ba%a6","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/34672\/","title":{"rendered":"java\u600e\u4e48\u52a8\u6001\u6539\u53d8\u6570\u7ec4\u957f\u5ea6"},"content":{"rendered":"<blockquote><p>\n  java\u4e2d\u6570\u7ec4\u7684\u957f\u5ea6\u5728\u521b\u5efa\u65f6\u5373\u56fa\u5b9a\uff0c\u65e0\u6cd5\u52a8\u6001\u66f4\u6539\u3002\u4f46\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u5f0f\u6a21\u62df\u52a8\u6001\u6570\u7ec4\uff1aarraylist\uff1a\u52a8\u6001\u6570\u7ec4\u7c7b\uff0c\u81ea\u52a8\u8c03\u6574\u5927\u5c0f\uff1barrays.copyof()\uff1a\u521b\u5efa\u65b0\u6570\u7ec4\u526f\u672c\uff0c\u6307\u5b9a\u65b0\u957f\u5ea6\uff1blinkedlist\uff1a\u53cc\u5411\u94fe\u8868\uff0c\u9ad8\u6548\u5904\u7406\u5143\u7d20\u6dfb\u52a0\u548c\u5220\u9664\uff1b\u81ea\u5b9a\u4e49\u5b9e\u73b0\uff1a\u521b\u5efa\u81ea\u5b9a\u4e49\u52a8\u6001\u6570\u7ec4\u7c7b\uff0c\u7ba1\u7406\u5185\u5b58\u5e76\u8c03\u6574\u5927\u5c0f\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/02\/2024110219062957207.jpg\" class=\"aligncenter\" title=\"java\u600e\u4e48\u52a8\u6001\u6539\u53d8\u6570\u7ec4\u957f\u5ea6\u63d2\u56fe\" alt=\"java\u600e\u4e48\u52a8\u6001\u6539\u53d8\u6570\u7ec4\u957f\u5ea6\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u52a8\u6001\u6539\u53d8Java\u6570\u7ec4\u957f\u5ea6<\/strong><\/p>\n<p>Java\u4e2d\u6570\u7ec4\u7684\u957f\u5ea6\u5728\u521b\u5efa\u65f6\u5c31\u786e\u5b9a\u4e86\uff0c\u5e76\u4e14\u65e0\u6cd5\u901a\u8fc7\u6807\u51c6\u65b9\u5f0f\u52a8\u6001\u66f4\u6539\u3002\u7136\u800c\uff0c\u6709\u51e0\u79cd\u89e3\u51b3\u65b9\u6cd5\u53ef\u4ee5\u6a21\u62df\u52a8\u6001\u6570\u7ec4\u7684\u884c\u4e3a\uff1a<\/p>\n<p><strong>ArrayList<\/strong><\/p>\n<p>ArrayList\u662f\u4e00\u4e2a\u52a8\u6001\u6570\u7ec4\u7c7b\uff0c\u5b83\u53ef\u4ee5\u81ea\u52a8\u6839\u636e\u9700\u8981\u589e\u52a0\u6216\u51cf\u5c11\u5176\u5927\u5c0f\u3002\u4e0e\u6570\u7ec4\u4e0d\u540c\uff0cArrayList\u4e0d\u5b58\u50a8\u503c\uff0c\u800c\u662f\u5b58\u50a8\u5bf9\u5176\u4ed6\u5bf9\u8c61\u7684\u5f15\u7528\u3002<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<p>\u4f7f\u7528\u793a\u4f8b\uff1a<\/p>\n<pre>ArrayList&lt;Integer&gt; numbers = new ArrayList&lt;&gt;();\nnumbers.add(10);\nnumbers.add(20);\nnumbers.remove(0); \/\/ \u5220\u9664\u7b2c\u4e00\u4e2a\u5143\u7d20<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>Arrays.copyOf()<\/strong><\/p>\n<p>Arrays.copyOf()\u65b9\u6cd5\u53ef\u4ee5\u521b\u5efa\u6570\u7ec4\u7684\u4e00\u4e2a\u65b0\u526f\u672c\uff0c\u5176\u4e2d\u5305\u542b\u6307\u5b9a\u7684\u65b0\u957f\u5ea6\u3002<\/p>\n<p>\u4f7f\u7528\u793a\u4f8b\uff1a<\/p>\n<pre>int[] numbers = { 10, 20, 30 };\nint[] newArray = Arrays.copyOf(numbers, 5); \/\/ \u521b\u5efa\u4e00\u4e2a\u957f\u5ea6\u4e3a5\u7684\u65b0\u6570\u7ec4<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u4f7f\u7528LinkedList<\/strong><\/p>\n<p>LinkedList\u662f\u4e00\u79cd\u53cc\u5411\u94fe\u8868\uff0c\u5b83\u53ef\u4ee5\u9ad8\u6548\u5730\u5904\u7406\u52a8\u6001\u6dfb\u52a0\u548c\u5220\u9664\u5143\u7d20\u7684\u64cd\u4f5c\u3002\u4e0eArrayList\u7c7b\u4f3c\uff0cLinkedList\u4e0d\u5b58\u50a8\u503c\uff0c\u800c\u662f\u5b58\u50a8\u5bf9\u5176\u4ed6\u5bf9\u8c61\u7684\u5f15\u7528\u3002<\/p>\n<p>\u4f7f\u7528\u793a\u4f8b\uff1a<\/p>\n<pre>LinkedList&lt;Integer&gt; numbers = new LinkedList&lt;&gt;();\nnumbers.add(10);\nnumbers.add(20);\nnumbers.removeFirst(); \/\/ \u5220\u9664\u7b2c\u4e00\u4e2a\u5143\u7d20<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u81ea\u5b9a\u4e49\u5b9e\u73b0<\/strong><\/p>\n<p>\u4e5f\u53ef\u4ee5\u521b\u5efa\u81ea\u5df1\u7684\u81ea\u5b9a\u4e49\u52a8\u6001\u6570\u7ec4\u7c7b\uff0c\u5b83\u53ef\u4ee5\u7ba1\u7406\u81ea\u5df1\u7684\u5185\u5b58\u5e76\u8c03\u6574\u5927\u5c0f\u3002\u8fd9\u79cd\u65b9\u6cd5\u63d0\u4f9b\u4e86\u6700\u5927\u7684\u7075\u6d3b\u6027\uff0c\u4f46\u5b83\u4e5f\u66f4\u590d\u6742\u3002<\/p>\n<p>\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre>public class DynamicArray&lt;T&gt; {\n    private T[] elements;\n    private int size;\n\n    public DynamicArray() {\n        elements = (T[]) new Object[10];\n        size = 0;\n    }\n\n    public void add(T element) {\n        if (size == elements.length) {\n            T[] newElements = (T[]) new Object[elements.length * 2];\n            System.arraycopy(elements, 0, newElements, 0, elements.length);\n            elements = newElements;\n        }\n        elements[size++] = element;\n    }\n\n    \/\/ \u5176\u4ed6\u65b9\u6cd5...\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u52a8\u6001\u6539\u53d8\u6570\u7ec4\u957f\u5ea6\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\u6570\u7ec4\u7684\u957f\u5ea6\u5728\u521b\u5efa\u65f6\u5373\u56fa\u5b9a\uff0c\u65e0\u6cd5\u52a8\u6001\u66f4\u6539\u3002\u4f46\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u5f0f\u6a21\u62df\u52a8\u6001\u6570\u7ec4\uff1aarraylist\uff1a\u52a8\u6001\u6570\u7ec4\u7c7b\uff0c\u81ea\u52a8\u8c03\u6574\u5927\u5c0f\uff1barrays.copyof()\uff1a\u521b\u5efa\u65b0\u6570\u7ec4\u526f\u672c\uff0c\u6307\u5b9a\u65b0\u957f\u5ea6\uff1blinkedlist\uff1a\u53cc\u5411\u94fe\u8868\uff0c\u9ad8\u6548\u5904\u7406\u5143\u7d20\u6dfb\u52a0\u548c\u5220\u9664\uff1b\u81ea\u5b9a\u4e49\u5b9e\u73b0\uff1a\u521b\u5efa\u81ea\u5b9a\u4e49\u52a8\u6001\u6570\u7ec4\u7c7b\uff0c\u7ba1\u7406\u5185\u5b58\u5e76\u8c03\u6574\u5927\u5c0f\u3002 \u5982\u4f55\u52a8\u6001\u6539\u53d8Java\u6570\u7ec4\u957f\u5ea6 Java\u4e2d\u6570\u7ec4\u7684\u957f\u5ea6\u5728\u521b\u5efa\u65f6\u5c31\u786e\u5b9a\u4e86\uff0c\u5e76\u4e14\u65e0\u6cd5\u901a\u8fc7\u6807\u51c6\u65b9\u5f0f\u52a8\u6001\u66f4\u6539\u3002\u7136\u800c\uff0c\u6709\u51e0\u79cd\u89e3\u51b3\u65b9\u6cd5\u53ef\u4ee5\u6a21\u62df\u52a8\u6001\u6570\u7ec4\u7684\u884c\u4e3a\uff1a ArrayList ArrayList\u662f\u4e00\u4e2a\u52a8\u6001\u6570\u7ec4\u7c7b\uff0c\u5b83\u53ef\u4ee5\u81ea\u52a8\u6839\u636e\u9700\u8981\u589e\u52a0\u6216\u51cf\u5c11\u5176\u5927\u5c0f\u3002\u4e0e\u6570\u7ec4\u4e0d\u540c\uff0cArrayList\u4e0d\u5b58\u50a8\u503c\uff0c\u800c\u662f\u5b58\u50a8\u5bf9\u5176\u4ed6\u5bf9\u8c61\u7684\u5f15\u7528\u3002 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u4f7f\u7528\u793a\u4f8b\uff1a ArrayList&lt;Integer&gt; numbers = new ArrayList&lt;&gt;(); numbers.add(10); numbers.add(20); numbers.remove(0); \/\/ \u5220\u9664\u7b2c\u4e00\u4e2a\u5143\u7d20 \u767b\u5f55\u540e\u590d\u5236 Arrays.copyOf() Arrays.copyOf()\u65b9\u6cd5\u53ef\u4ee5\u521b\u5efa\u6570\u7ec4\u7684\u4e00\u4e2a\u65b0\u526f\u672c\uff0c\u5176\u4e2d\u5305\u542b\u6307\u5b9a\u7684\u65b0\u957f\u5ea6\u3002 \u4f7f\u7528\u793a\u4f8b\uff1a int[] numbers = { 10, 20, 30 }; int[] newArray = Arrays.copyOf(numbers, 5); \/\/ \u521b\u5efa\u4e00\u4e2a\u957f\u5ea6\u4e3a5\u7684\u65b0\u6570\u7ec4 \u767b\u5f55\u540e\u590d\u5236 \u4f7f\u7528LinkedList LinkedList\u662f\u4e00\u79cd\u53cc\u5411\u94fe\u8868\uff0c\u5b83\u53ef\u4ee5\u9ad8\u6548\u5730\u5904\u7406\u52a8\u6001\u6dfb\u52a0\u548c\u5220\u9664\u5143\u7d20\u7684\u64cd\u4f5c\u3002\u4e0eArrayList\u7c7b\u4f3c\uff0cLinkedList\u4e0d\u5b58\u50a8\u503c\uff0c\u800c\u662f\u5b58\u50a8\u5bf9\u5176\u4ed6\u5bf9\u8c61\u7684\u5f15\u7528\u3002 \u4f7f\u7528\u793a\u4f8b\uff1a LinkedList&lt;Integer&gt; numbers = new LinkedList&lt;&gt;(); numbers.add(10); numbers.add(20); numbers.removeFirst(); \/\/ \u5220\u9664\u7b2c\u4e00\u4e2a\u5143\u7d20 \u767b\u5f55\u540e\u590d\u5236 \u81ea\u5b9a\u4e49\u5b9e\u73b0 \u4e5f\u53ef\u4ee5\u521b\u5efa\u81ea\u5df1\u7684\u81ea\u5b9a\u4e49\u52a8\u6001\u6570\u7ec4\u7c7b\uff0c\u5b83\u53ef\u4ee5\u7ba1\u7406\u81ea\u5df1\u7684\u5185\u5b58\u5e76\u8c03\u6574\u5927\u5c0f\u3002\u8fd9\u79cd\u65b9\u6cd5\u63d0\u4f9b\u4e86\u6700\u5927\u7684\u7075\u6d3b\u6027\uff0c\u4f46\u5b83\u4e5f\u66f4\u590d\u6742\u3002 \u793a\u4f8b\u4ee3\u7801\uff1a public [&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-34672","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/34672","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=34672"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/34672\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=34672"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=34672"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=34672"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}