{"id":44666,"date":"2025-06-20T07:32:28","date_gmt":"2025-06-19T23:32:28","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/44666.html"},"modified":"2025-06-20T07:32:28","modified_gmt":"2025-06-19T23:32:28","slug":"java-%e4%b8%ad-arraylist%e3%80%81vector%e3%80%81linkedlist-%e7%9a%84%e6%a0%b8%e5%bf%83%e5%8c%ba%e5%88%ab%e4%b8%8e%e5%ba%94%e7%94%a8%e5%9c%ba%e6%99%af","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/44666.html","title":{"rendered":"Java \u4e2d ArrayList\u3001Vector\u3001LinkedList \u7684\u6838\u5fc3\u533a\u522b\u4e0e\u5e94\u7528\u573a\u666f"},"content":{"rendered":"<h2>Java \u4e2d ArrayList\u3001Vector\u3001LinkedList \u7684\u6838\u5fc3\u533a\u522b\u4e0e\u5e94\u7528\u573a\u666f<\/h2>\n<h4>\u5f15\u8a00<\/h4>\n<p>\u5728 Java \u96c6\u5408\u6846\u67b6\u4f53\u7cfb\u4e2d&#xff0c;ArrayList\u3001Vector\u548cLinkedList\u4f5c\u4e3aList\u63a5\u53e3\u7684\u4e09\u5927\u7ecf\u5178\u5b9e\u73b0\u7c7b&#xff0c;\u5171\u540c\u627f\u8f7d\u7740\u5217\u8868\u6570\u636e\u7684\u5b58\u50a8\u4e0e\u64cd\u4f5c\u529f\u80fd\u3002\u7136\u800c&#xff0c;\u7531\u4e8e\u5e95\u5c42\u6570\u636e\u7ed3\u6784\u8bbe\u8ba1\u3001\u7ebf\u7a0b\u5b89\u5168\u673a\u5236\u4ee5\u53ca\u6027\u80fd\u7279\u6027\u7684\u5dee\u5f02&#xff0c;\u4f7f\u5f97\u5b83\u4eec\u5728\u4e0d\u540c\u5e94\u7528\u573a\u666f\u4e0b\u5448\u73b0\u51fa\u622a\u7136\u4e0d\u540c\u7684\u8868\u73b0\u3002\u63a5\u4e0b\u6765&#xff0c;\u672c\u6587\u5c06\u4ece\u6280\u672f\u5b9e\u73b0\u539f\u7406\u3001\u6838\u5fc3\u7279\u6027\u5bf9\u6bd4\u3001\u6027\u80fd\u6d4b\u8bd5\u5206\u6790\u4ee5\u53ca\u5b9e\u6218\u9009\u578b\u7b56\u7565\u56db\u4e2a\u7ef4\u5ea6&#xff0c;\u5bf9\u8fd9\u4e09\u4e2a\u7c7b\u8fdb\u884c\u6df1\u5165\u5256\u6790<\/p>\n<h4>\u4e00\u3001\u5e95\u5c42\u6570\u636e\u7ed3\u6784&#xff1a;\u6570\u7ec4 vs \u94fe\u8868\u7684\u672c\u8d28\u5dee\u5f02<\/h4>\n<h5>1. ArrayList &amp; Vector&#xff1a;\u52a8\u6001\u6570\u7ec4\u5b9e\u73b0<\/h5>\n<p>\u6570\u636e\u5b58\u50a8&#xff1a;\u57fa\u4e8eObject[]\u6570\u7ec4\u5b58\u50a8\u5143\u7d20&#xff0c;\u5143\u7d20\u5728\u5185\u5b58\u4e2d\u8fde\u7eed\u5206\u5e03<\/p>\n<p>\u6838\u5fc3\u7279\u6027&#xff1a;<\/p>\n<ul>\n<li>\u652f\u6301\u5feb\u901f\u968f\u673a\u8bbf\u95ee&#xff08;\u901a\u8fc7\u7d22\u5f15\u5b9a\u4f4d\u5143\u7d20&#xff0c;\u65f6\u95f4\u590d\u6742\u5ea6 O (1)&#xff09;<\/li>\n<li>\u63d2\u5165 \/ \u5220\u9664\u975e\u5c3e\u90e8\u5143\u7d20\u65f6\u9700\u79fb\u52a8\u540e\u7eed\u5143\u7d20&#xff08;\u65f6\u95f4\u590d\u6742\u5ea6 O (n)&#xff09;<\/li>\n<li>\u5bb9\u91cf\u4e0d\u8db3\u65f6\u89e6\u53d1\u6269\u5bb9&#xff08;\u91cd\u65b0\u5206\u914d\u6570\u7ec4\u5e76\u590d\u5236\u5143\u7d20&#xff09;<\/li>\n<\/ul>\n<h5>2. LinkedList&#xff1a;\u53cc\u5411\u94fe\u8868\u5b9e\u73b0<\/h5>\n<p>\u6570\u636e\u5b58\u50a8&#xff1a;\u57fa\u4e8eNode\u8282\u70b9\u5bf9\u8c61&#xff0c;\u6bcf\u4e2a\u8282\u70b9\u5305\u542bprev&#xff08;\u524d\u9a71&#xff09;\u548cnext&#xff08;\u540e\u7ee7&#xff09;\u6307\u9488<\/p>\n<p>\u6838\u5fc3\u7279\u6027&#xff1a;<\/p>\n<ul>\n<li>\u63d2\u5165 \/ \u5220\u9664\u64cd\u4f5c\u53ea\u9700\u4fee\u6539\u6307\u9488\u6307\u5411&#xff08;\u65f6\u95f4\u590d\u6742\u5ea6 O (1)&#xff0c;\u4ec5\u9700\u5b9a\u4f4d\u8282\u70b9&#xff09;<\/li>\n<li>\u968f\u673a\u8bbf\u95ee\u9700\u4ece\u5934\u90e8\u6216\u5c3e\u90e8\u904d\u5386\u94fe\u8868&#xff08;\u65f6\u95f4\u590d\u6742\u5ea6 O (n)&#xff09;<\/li>\n<li>\u65e0\u9700\u9884\u5206\u914d\u5185\u5b58&#xff0c;\u8282\u70b9\u6309\u9700\u521b\u5efa<\/li>\n<\/ul>\n<h5>3\u3001\u6e90\u7801\u5bf9\u6bd4<\/h5>\n<p><span class=\"token comment\">\/\/ ArrayList\u6838\u5fc3\u6e90\u7801&#xff08;JDK17&#xff09;<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">ArrayList<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">E<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">AbstractList<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">E<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token keyword\">implements<\/span> <span class=\"token class-name\">RandomAccess<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">transient<\/span> <span class=\"token class-name\">Object<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> elementData<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5b58\u50a8\u5143\u7d20\u7684\u6570\u7ec4<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">int<\/span> size<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ Vector\u6838\u5fc3\u6e90\u7801&#xff08;\u4e0eArrayList\u7ed3\u6784\u7c7b\u4f3c&#xff0c;\u4f46\u65b9\u6cd5\u540c\u6b65&#xff09;<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Vector<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">E<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">AbstractList<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">E<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token keyword\">implements<\/span> <span class=\"token class-name\">RandomAccess<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Cloneable<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\"><span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>io<span class=\"token punctuation\">.<\/span><\/span>Serializable<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">protected<\/span> <span class=\"token class-name\">Object<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> elementData<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">protected<\/span> <span class=\"token keyword\">int<\/span> elementCount<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ LinkedList\u6838\u5fc3\u6e90\u7801<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">LinkedList<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">E<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">AbstractSequentialList<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">E<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token keyword\">implements<\/span> <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">E<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Deque<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">E<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Cloneable<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\"><span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>io<span class=\"token punctuation\">.<\/span><\/span>Serializable<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">transient<\/span> <span class=\"token class-name\">Node<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">E<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> first<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5934\u8282\u70b9<\/span><br \/>\n    <span class=\"token keyword\">transient<\/span> <span class=\"token class-name\">Node<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">E<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> last<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5c3e\u8282\u70b9<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Node<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">E<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">E<\/span> item<span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">Node<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">E<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> next<span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">Node<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">E<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> prev<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>\u4e8c\u3001\u7ebf\u7a0b\u5b89\u5168&#xff1a;\u4ece\u540c\u6b65\u7b56\u7565\u770b\u8bbe\u8ba1\u5b9a\u4f4d<\/h4>\n<h5>1. Vector&#xff1a;\u53e4\u8001\u7684\u7ebf\u7a0b\u5b89\u5168\u5b9e\u73b0<\/h5>\n<p>\u540c\u6b65\u673a\u5236&#xff1a;\u901a\u8fc7synchronized\u5173\u952e\u5b57\u4fee\u9970\u6240\u6709\u516c\u5171\u65b9\u6cd5&#xff08;\u5982add\u3001get\u3001remove&#xff09;<\/p>\n<p>\u7f3a\u9677&#xff1a;<\/p>\n<ul>\n<li>\u7c97\u7c92\u5ea6\u540c\u6b65\u5bfc\u81f4\u6027\u80fd\u74f6\u9888&#xff08;\u5373\u4f7f\u53ea\u8bfb\u64cd\u4f5c\u4e5f\u9700\u52a0\u9501&#xff09;<\/li>\n<li>\u73b0\u4ee3\u5e76\u53d1\u573a\u666f\u66f4\u63a8\u8350Collections.synchronizedList\u6216CopyOnWriteArrayList<\/li>\n<\/ul>\n<h5>2. ArrayList &amp; LinkedList&#xff1a;\u975e\u7ebf\u7a0b\u5b89\u5168<\/h5>\n<p>\u8bbe\u8ba1\u521d\u8877&#xff1a;\u5047\u8bbe\u5728\u5355\u7ebf\u7a0b\u73af\u5883\u4e0b\u4f7f\u7528&#xff0c;\u907f\u514d\u540c\u6b65\u5f00\u9500<\/p>\n<p>\u7ebf\u7a0b\u5b89\u5168\u65b9\u6848&#xff1a;<\/p>\n<p><span class=\"token comment\">\/\/ \u65b9\u68481&#xff1a;\u4f7f\u7528Collections.synchronizedList\u5305\u88c5<\/span><br \/>\n<span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> syncArrayList <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">Collections<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">synchronizedList<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">ArrayList<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u65b9\u68482&#xff1a;\u9ad8\u5e76\u53d1\u8bfb\u591a\u5199\u5c11\u573a\u666f\u4f7f\u7528CopyOnWriteArrayList<\/span><br \/>\n<span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> concurrentList <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">CopyOnWriteArrayList<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h5>3. \u5173\u952e\u65b9\u6cd5\u5bf9\u6bd4<\/h5>\n<table>\n<tr>\u64cd\u4f5cArrayList\/LinkedList \u5b9e\u73b0Vector \u5b9e\u73b0<\/tr>\n<tbody>\n<tr>\n<td>\u6dfb\u52a0\u5143\u7d20<\/td>\n<td>\u65e0\u540c\u6b65\u4fee\u9970\u7b26<\/td>\n<td>public synchronized boolean add(E e)<\/td>\n<\/tr>\n<tr>\n<td>\u83b7\u53d6\u5143\u7d20<\/td>\n<td>\u76f4\u63a5\u6570\u7ec4\u7d22\u5f15\u6216\u94fe\u8868\u904d\u5386<\/td>\n<td>public synchronized E get(int index)<\/td>\n<\/tr>\n<tr>\n<td>\u8fed\u4ee3\u5668<\/td>\n<td>\u652f\u6301 fail-fast \u673a\u5236&#xff08;\u904d\u5386\u65f6\u4fee\u6539\u96c6\u5408\u629b\u5f02\u5e38&#xff09;<\/td>\n<td>Iterator \u652f\u6301 fail-fast&#xff0c;Enumeration \u4e0d\u652f\u6301<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4>\u4e09\u3001\u6027\u80fd\u7279\u6027&#xff1a;\u64cd\u4f5c\u6548\u7387\u7684\u5168\u65b9\u4f4d\u5bf9\u6bd4<\/h4>\n<h5>1. \u968f\u673a\u8bbf\u95ee\u6027\u80fd&#xff08;get \u64cd\u4f5c&#xff09;<\/h5>\n<p>ArrayList\/Vector&#xff1a;O (1)&#xff0c;\u76f4\u63a5\u901a\u8fc7\u6570\u7ec4\u7d22\u5f15\u5b9a\u4f4d<\/p>\n<p>LinkedList&#xff1a;O (n)&#xff0c;\u9700\u4ecefirst\u6216last\u8282\u70b9\u5f00\u59cb\u904d\u5386<\/p>\n<p><span class=\"token comment\">\/\/ \u6027\u80fd\u6d4b\u8bd5&#xff1a;\u968f\u673a\u8bbf\u95ee10\u4e07\u6b21<\/span><br \/>\n<span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Integer<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> arrayList <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">ArrayList<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Collections<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">nCopies<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">100000<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Integer<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> linkedList <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">LinkedList<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Collections<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">nCopies<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">100000<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">long<\/span> start <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">currentTimeMillis<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">100000<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    arrayList<span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span>i<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;ArrayList get time: &#034;<\/span> <span class=\"token operator\">&#043;<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">currentTimeMillis<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span> start<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#043;<\/span> <span class=\"token string\">&#034;ms&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u7ea62ms<\/span><\/p>\n<p>start <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">currentTimeMillis<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">100000<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    linkedList<span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span>i<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5b9e\u9645\u662fnode(i)\u65b9\u6cd5&#xff0c;\u9700\u904d\u5386\u94fe\u8868<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;LinkedList get time: &#034;<\/span> <span class=\"token operator\">&#043;<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">currentTimeMillis<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span> start<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#043;<\/span> <span class=\"token string\">&#034;ms&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u7ea6450ms<\/span><\/p>\n<h5>2. \u4e2d\u95f4\u63d2\u5165 \/ \u5220\u9664\u6027\u80fd&#xff08;add\/remove (index)&#xff09;<\/h5>\n<p>ArrayList\/Vector&#xff1a;O (n)&#xff0c;\u9700\u79fb\u52a8\u540e\u7eed\u5143\u7d20<\/p>\n<p>LinkedList&#xff1a;O (1)&#xff08;\u627e\u5230\u8282\u70b9\u540e\u4ec5\u9700\u4fee\u6539\u6307\u9488&#xff09;<\/p>\n<p><span class=\"token comment\">\/\/ \u4e2d\u95f4\u63d2\u51651\u4e07\u6b21\u6027\u80fd\u5bf9\u6bd4<\/span><br \/>\n<span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Integer<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> arrayList <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">ArrayList<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Integer<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> linkedList <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">LinkedList<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">10000<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    arrayList<span class=\"token punctuation\">.<\/span><span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span>i<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    linkedList<span class=\"token punctuation\">.<\/span><span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span>i<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">long<\/span> start <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">currentTimeMillis<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">1000<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    arrayList<span class=\"token punctuation\">.<\/span><span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">5000<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">999<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u4e2d\u95f4\u4f4d\u7f6e\u63d2\u5165<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;ArrayList insert time: &#034;<\/span> <span class=\"token operator\">&#043;<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">currentTimeMillis<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span> start<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#043;<\/span> <span class=\"token string\">&#034;ms&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u7ea685ms<\/span><\/p>\n<p>start <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">currentTimeMillis<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">1000<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    linkedList<span class=\"token punctuation\">.<\/span><span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">5000<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">999<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u94fe\u8868\u8282\u70b9\u64cd\u4f5c<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;LinkedList insert time: &#034;<\/span> <span class=\"token operator\">&#043;<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">currentTimeMillis<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span> start<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#043;<\/span> <span class=\"token string\">&#034;ms&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u7ea62ms<\/span><\/p>\n<h5>3. \u6269\u5bb9\u673a\u5236\u5dee\u5f02<\/h5>\n<table>\n<tr>\u7279\u6027ArrayListVectorLinkedList<\/tr>\n<tbody>\n<tr>\n<td>\u521d\u59cb\u5bb9\u91cf<\/td>\n<td>10&#xff08;JDK1.8&#043;&#xff09;<\/td>\n<td>10<\/td>\n<td>0&#xff08;\u7a7a\u94fe\u8868&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>\u6269\u5bb9\u7b56\u7565<\/td>\n<td>1.5 \u500d&#xff08;oldCapacity &#043; (oldCapacity &gt;&gt; 1)&#xff09;<\/td>\n<td>2 \u500d&#xff08;\u9ed8\u8ba4&#xff09;\u6216\u81ea\u5b9a\u4e49\u589e\u957f\u56e0\u5b50<\/td>\n<td>\u65e0\u9700\u6269\u5bb9<\/td>\n<\/tr>\n<tr>\n<td>\u6269\u5bb9\u89e6\u53d1<\/td>\n<td>\u5143\u7d20\u4e2a\u6570\u8d85\u8fc7\u5f53\u524d\u5bb9\u91cf<\/td>\n<td>\u540c\u4e0a<\/td>\n<td>\u6309\u9700\u521b\u5efa\u8282\u70b9<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4>\u56db\u3001\u529f\u80fd\u6269\u5c55&#xff1a;\u63a5\u53e3\u5b9e\u73b0\u4e0e\u7279\u6b8a\u80fd\u529b<\/h4>\n<h5>1. LinkedList \u7684\u53cc\u7aef\u64cd\u4f5c\u4f18\u52bf<\/h5>\n<p>1\u3001\u5b9e\u73b0Deque\u63a5\u53e3&#xff0c;\u652f\u6301\u9ad8\u6548\u53cc\u7aef\u64cd\u4f5c&#xff1a;<\/p>\n<p><span class=\"token class-name\">LinkedList<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> deque <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">LinkedList<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\ndeque<span class=\"token punctuation\">.<\/span><span class=\"token function\">addFirst<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;head&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>   <span class=\"token comment\">\/\/ \u5934\u90e8\u63d2\u5165&#xff08;O(1)&#xff09;<\/span><br \/>\ndeque<span class=\"token punctuation\">.<\/span><span class=\"token function\">addLast<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;tail&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>    <span class=\"token comment\">\/\/ \u5c3e\u90e8\u63d2\u5165&#xff08;O(1)&#xff09;<\/span><br \/>\ndeque<span class=\"token punctuation\">.<\/span><span class=\"token function\">removeFirst<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>      <span class=\"token comment\">\/\/ \u5934\u90e8\u5220\u9664&#xff08;O(1)&#xff09;<\/span><br \/>\ndeque<span class=\"token punctuation\">.<\/span><span class=\"token function\">getLast<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>          <span class=\"token comment\">\/\/ \u5c3e\u90e8\u83b7\u53d6&#xff08;O(1)&#xff09;<\/span><\/p>\n<p>2\u3001\u53ef\u76f4\u63a5\u4f5c\u4e3a\u6808\u6216\u961f\u5217\u4f7f\u7528&#xff1a;<\/p>\n<p><span class=\"token comment\">\/\/ \u4f5c\u4e3a\u6808&#xff08;\u540e\u8fdb\u5148\u51fa&#xff09;<\/span><br \/>\ndeque<span class=\"token punctuation\">.<\/span><span class=\"token function\">push<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;item&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\ndeque<span class=\"token punctuation\">.<\/span><span class=\"token function\">pop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u4f5c\u4e3a\u961f\u5217&#xff08;\u5148\u8fdb\u5148\u51fa&#xff09;<\/span><br \/>\ndeque<span class=\"token punctuation\">.<\/span><span class=\"token function\">offer<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;item&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\ndeque<span class=\"token punctuation\">.<\/span><span class=\"token function\">poll<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h5>2. Vector \u7684\u5386\u53f2\u517c\u5bb9\u6027<\/h5>\n<p>1\u3001\u7559\u63a5\u53e3\u652f\u6301&#xff1a;\u63d0\u4f9bEnumeration\u8fed\u4ee3\u5668&#xff08;\u53e4\u8001\u7684\u904d\u5386\u65b9\u5f0f&#xff09;<\/p>\n<p><span class=\"token class-name\">Enumeration<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Integer<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> enumeration <span class=\"token operator\">&#061;<\/span> vector<span class=\"token punctuation\">.<\/span><span class=\"token function\">elements<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span>enumeration<span class=\"token punctuation\">.<\/span><span class=\"token function\">hasMoreElements<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token class-name\">Integer<\/span> element <span class=\"token operator\">&#061;<\/span> enumeration<span class=\"token punctuation\">.<\/span><span class=\"token function\">nextElement<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>2\u3001\u65e9\u671f Java \u7248\u672c&#xff08;JDK1.0&#xff09;\u7684\u4ea7\u7269&#xff0c;\u73b0\u4ee3\u5f00\u53d1\u4e2d\u5df2\u9010\u6e10\u88ab\u6dd8\u6c70<\/p>\n<h4>\u4e94\u3001\u9002\u7528\u573a\u666f&#xff1a;\u5982\u4f55\u9009\u62e9\u6b63\u786e\u7684\u5217\u8868<\/h4>\n<h5>1. \u4f18\u5148\u9009\u62e9 ArrayList \u7684\u573a\u666f<\/h5>\n<ul>\n<li>\u968f\u673a\u8bbf\u95ee\u9891\u7e41&#xff1a;\u5982\u5206\u9875\u67e5\u8be2\u3001\u6570\u636e\u904d\u5386&#xff08;90% \u7684\u4e1a\u52a1\u573a\u666f\u9002\u7528&#xff09;<\/li>\n<li>\u5143\u7d20\u6dfb\u52a0 \/ \u5220\u9664\u96c6\u4e2d\u5728\u5c3e\u90e8&#xff1a;add()\u9ed8\u8ba4\u5c3e\u90e8\u63d2\u5165&#xff0c;\u6548\u7387\u63a5\u8fd1 O (1)<\/li>\n<li>\u5355\u7ebf\u7a0b\u73af\u5883&#xff1a;\u65e0\u9700\u989d\u5916\u540c\u6b65\u5f00\u9500<\/li>\n<\/ul>\n<h5>2. \u9009\u62e9 LinkedList \u7684\u573a\u666f<\/h5>\n<ul>\n<li>\u9891\u7e41\u7684\u4e2d\u95f4\u63d2\u5165 \/ \u5220\u9664&#xff1a;\u5982\u94fe\u8868\u7ed3\u6784\u7684\u52a8\u6001\u6570\u636e\u64cd\u4f5c<\/li>\n<li>\u9700\u8981\u53cc\u7aef\u961f\u5217\u529f\u80fd&#xff1a;\u5229\u7528Deque\u63a5\u53e3\u5b9e\u73b0\u6808 \/ \u961f\u5217\u64cd\u4f5c<\/li>\n<li>\u6570\u636e\u91cf\u4e0d\u786e\u5b9a\u4e14\u5185\u5b58\u654f\u611f&#xff1a;\u6309\u9700\u5206\u914d\u8282\u70b9&#xff0c;\u907f\u514d\u6570\u7ec4\u6269\u5bb9\u7684\u5185\u5b58\u6d6a\u8d39<\/li>\n<\/ul>\n<h5>3. Vector \u7684\u4f7f\u7528\u573a\u666f&#xff08;\u8c28\u614e\u9009\u62e9&#xff09;<\/h5>\n<ul>\n<li>\u9057\u7559\u7cfb\u7edf\u517c\u5bb9&#xff1a;\u7ef4\u62a4\u65e9\u671f\u4f7f\u7528 Vector \u7684\u4ee3\u7801<\/li>\n<li>\u7b80\u5355\u7ebf\u7a0b\u5b89\u5168\u9700\u6c42&#xff1a;\u5728\u65e0\u6cd5\u4f7f\u7528\u540c\u6b65\u5305\u88c5\u7c7b\u65f6&#xff08;\u4f46\u6027\u80fd\u4f4e\u4e8eCopyOnWriteArrayList&#xff09;<\/li>\n<\/ul>\n<h5>4.\u5bf9\u6bd4\u51b3\u7b56<\/h5>\n<table>\n<tr>\u573a\u666f\u7279\u5f81ArrayListVectorLinkedList<\/tr>\n<tbody>\n<tr>\n<td>\u968f\u673a\u8bbf\u95ee\u4e3a\u4e3b<\/td>\n<td>\u2705 \u9996\u9009<\/td>\n<td>\u2705 \u53ef\u7528&#xff08;\u4f46\u6027\u80fd\u4f4e&#xff09;<\/td>\n<td>\u274c \u4e0d\u63a8\u8350<\/td>\n<\/tr>\n<tr>\n<td>\u4e2d\u95f4\u63d2\u5165 \/ \u5220\u9664\u9891\u7e41<\/td>\n<td>\u274c \u4f4e\u6548<\/td>\n<td>\u274c \u4f4e\u6548<\/td>\n<td>\u2705 \u9996\u9009<\/td>\n<\/tr>\n<tr>\n<td>\u591a\u7ebf\u7a0b\u5b89\u5168<\/td>\n<td>\u274c&#xff08;\u9700\u624b\u52a8\u540c\u6b65&#xff09;<\/td>\n<td>\u2705&#xff08;\u539f\u751f\u652f\u6301&#xff09;<\/td>\n<td>\u274c&#xff08;\u9700\u624b\u52a8\u540c\u6b65&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>\u9700\u8981\u53cc\u7aef\u961f\u5217\u529f\u80fd<\/td>\n<td>\u274c \u4e0d\u652f\u6301<\/td>\n<td>\u274c \u4e0d\u652f\u6301<\/td>\n<td>\u2705 \u652f\u6301<\/td>\n<\/tr>\n<tr>\n<td>\u5185\u5b58\u4f18\u5316&#xff08;\u6570\u636e\u91cf\u52a8\u6001&#xff09;<\/td>\n<td>\u2705&#xff08;\u53ef\u7f29\u5bb9&#xff09;<\/td>\n<td>\u274c&#xff08;\u6269\u5bb9\u6d6a\u8d39\u5927&#xff09;<\/td>\n<td>\u2705&#xff08;\u6309\u9700\u5206\u914d&#xff09;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4>\u516d\u3001\u6700\u4f73\u5b9e\u8df5\u4e0e\u907f\u5751\u6307\u5357<\/h4>\n<h5>1. \u6027\u80fd\u4f18\u5316\u6280\u5de7<\/h5>\n<ul>\n<li>ArrayList \u9884\u5206\u914d\u5bb9\u91cf&#xff1a;\u901a\u8fc7new ArrayList&lt;&gt;(initialCapacity)\u907f\u514d\u591a\u6b21\u6269\u5bb9<\/li>\n<\/ul>\n<p><span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> list <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">ArrayList<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1000<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u9884\u5206\u914d1000\u5bb9\u91cf<\/span><\/p>\n<ul>\n<li>LinkedList \u6279\u91cf\u64cd\u4f5c&#xff1a;\u4f7f\u7528addAll()\u66ff\u4ee3\u591a\u6b21\u5355\u5143\u7d20\u63d2\u5165<\/li>\n<li>\u904d\u5386\u65b9\u5f0f\u9009\u62e9&#xff1a;\n<ul>\n<li>ArrayList\/Vector \u63a8\u8350\u4f7f\u7528\u666e\u901a for \u5faa\u73af&#xff08;\u7d22\u5f15\u8bbf\u95ee&#xff09;<\/li>\n<li>LinkedList \u63a8\u8350\u4f7f\u7528 Iterator \u6216\u589e\u5f3a for \u5faa\u73af&#xff08;\u907f\u514dget(index)&#xff09;<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h5>2. \u7ebf\u7a0b\u5b89\u5168\u6700\u4f73\u5b9e\u8df5<\/h5>\n<p><span class=\"token comment\">\/\/ \u4e0d\u63a8\u8350\u76f4\u63a5\u4f7f\u7528Vector<\/span><br \/>\n<span class=\"token comment\">\/\/ \u63a8\u8350\u65b9\u68481&#xff1a;\u540c\u6b65\u5305\u88c5ArrayList&#xff08;\u7ec6\u7c92\u5ea6\u63a7\u5236&#xff09;<\/span><br \/>\n<span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> syncList <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">Collections<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">synchronizedList<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">ArrayList<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/ \u4f7f\u7528\u65f6\u9700\u624b\u52a8\u540c\u6b65<\/span><br \/>\n<span class=\"token keyword\">synchronized<\/span> <span class=\"token punctuation\">(<\/span>syncList<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    syncList<span class=\"token punctuation\">.<\/span><span class=\"token function\">forEach<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u63a8\u8350\u65b9\u68482&#xff1a;\u9ad8\u5e76\u53d1\u573a\u666f\u4f7f\u7528CopyOnWriteArrayList<\/span><br \/>\n<span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> concurrentList <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">CopyOnWriteArrayList<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/ \u5199\u65f6\u590d\u5236&#xff0c;\u9002\u5408\u8bfb\u591a\u5199\u5c11<\/span><\/p>\n<h5>3. \u5e38\u89c1\u8bef\u533a<\/h5>\n<ul>\n<li>Vector \u6027\u80fd\u8bef\u533a&#xff1a;\u8ba4\u4e3a Vector \u5728\u591a\u7ebf\u7a0b\u4e0b\u4e00\u5b9a\u5b89\u5168\u4e14\u9ad8\u6548&#xff0c;\u5b9e\u9645\u7c97\u7c92\u5ea6\u540c\u6b65\u4f1a\u5bfc\u81f4\u541e\u5410\u91cf\u4e0b\u964d<\/li>\n<li>LinkedList \u968f\u673a\u8bbf\u95ee\u8bef\u533a&#xff1a;\u907f\u514d\u5728 LinkedList \u4e0a\u4f7f\u7528get(index)\u8fdb\u884c\u5927\u91cf\u968f\u673a\u8bbf\u95ee&#xff0c;\u5e94\u6539\u7528\u8fed\u4ee3\u5668<\/li>\n<li>\u6269\u5bb9\u6027\u80fd\u8bef\u533a&#xff1a;ArrayList \u5728\u9884\u5206\u914d\u5bb9\u91cf\u65f6\u6027\u80fd\u63a5\u8fd1\u6570\u7ec4&#xff0c;\u76f2\u76ee\u4f7f\u7528 LinkedList \u53ef\u80fd\u5bfc\u81f4\u6027\u80fd\u53cd\u4f18<\/li>\n<\/ul>\n<h4>\u4e03\u3001\u603b\u7ed3&#xff1a;\u6570\u636e\u7ed3\u6784\u9009\u62e9\u7684\u6838\u5fc3\u903b\u8f91<\/h4>\n<h5>1.\u4f18\u5148\u8003\u8651\u6570\u636e\u64cd\u4f5c\u7c7b\u578b&#xff1a;<\/h5>\n<ul>\n<li>\n<p>\u8bfb\u591a\u5199\u5c11\u4e14\u968f\u673a\u8bbf\u95ee \u2192 ArrayList<\/p>\n<\/li>\n<li>\n<p>\u9891\u7e41\u63d2\u5165\u5220\u9664\u6216\u53cc\u7aef\u64cd\u4f5c \u2192 LinkedList<\/p>\n<\/li>\n<li>\n<p>\u5fc5\u987b\u7ebf\u7a0b\u5b89\u5168\u4e14\u64cd\u4f5c\u7b80\u5355 \u2192 \u4ec5\u5728\u9057\u7559\u7cfb\u7edf\u4e2d\u4f7f\u7528Vector&#xff0c;\u5426\u5219\u7528\u540c\u6b65\u5305\u88c5\u7c7b<\/p>\n<\/li>\n<\/ul>\n<h5>2. \u5173\u6ce8\u6027\u80fd\u4e0e\u5185\u5b58&#xff1a;<\/h5>\n<ul>\n<li>\n<p>\u6570\u7ec4\u7ed3\u6784\u9002\u5408\u6570\u636e\u91cf\u53ef\u9884\u4f30\u7684\u573a\u666f&#xff08;\u901a\u8fc7\u9884\u5206\u914d\u51cf\u5c11\u6269\u5bb9\u5f00\u9500&#xff09;<\/p>\n<\/li>\n<li>\n<p>\u94fe\u8868\u7ed3\u6784\u9002\u5408\u6570\u636e\u52a8\u6001\u53d8\u5316\u4e14\u5185\u5b58\u654f\u611f\u7684\u573a\u666f<\/p>\n<\/li>\n<\/ul>\n<h5>3. \u9075\u5faa\u73b0\u4ee3\u5f00\u53d1\u89c4\u8303&#xff1a;<\/h5>\n<ul>\n<li>\n<p>Vector \u5df2\u9010\u6e10\u88ab\u6dd8\u6c70&#xff0c;\u65b0\u4ee3\u7801\u5e94\u4f18\u5148\u4f7f\u7528 ArrayList\/LinkedList<\/p>\n<\/li>\n<li>\n<p>\u7ebf\u7a0b\u5b89\u5168\u573a\u666f\u91c7\u7528\u66f4\u7075\u6d3b\u7684\u540c\u6b65\u65b9\u6848&#xff08;\u5982synchronizedList\u6216\u5e76\u53d1\u5bb9\u5668&#xff09;<\/p>\n<\/li>\n<\/ul>\n<p>\u901a\u8fc7\u7406\u89e3\u4e09\u79cd\u5217\u8868\u7684\u5e95\u5c42\u5b9e\u73b0\u4e0e\u7279\u6027\u5dee\u5f02&#xff0c;\u5f00\u53d1\u8005\u53ef\u4ee5\u5728\u4e0d\u540c\u573a\u666f\u4e0b\u505a\u51fa\u6700\u4f18\u9009\u62e9&#xff0c;\u907f\u514d\u56e0\u6570\u636e\u7ed3\u6784\u9009\u578b\u4e0d\u5f53\u5bfc\u81f4\u7684\u6027\u80fd\u95ee\u9898\u6216\u529f\u80fd\u7f3a\u9677\u3002\u8bb0\u4f4f&#xff1a;\u6ca1\u6709\u6700\u597d\u7684\u96c6\u5408\u7c7b&#xff0c;\u53ea\u6709\u6700\u9002\u5408\u5177\u4f53\u573a\u666f\u7684\u9009\u62e9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb766\u6b21\uff0c\u70b9\u8d5e3\u6b21\uff0c\u6536\u85cf8\u6b21\u3002\u6458\u8981\uff1a Java\u96c6\u5408\u6846\u67b6\u4e2d\uff0cArrayList\u3001Vector\u548cLinkedList\u4f5c\u4e3aList\u63a5\u53e3\u7684\u4e3b\u8981\u5b9e\u73b0\uff0c\u5404\u6709\u7279\u70b9\u3002ArrayList\u548cVector\u57fa\u4e8e\u52a8\u6001\u6570\u7ec4\uff0c\u652f\u6301\u5feb\u901f\u968f\u673a\u8bbf\u95ee(O(1))\uff0c\u4f46\u63d2\u5165\u5220\u9664\u9700\u79fb\u52a8\u5143\u7d20(O(n))\uff1bLinkedList\u91c7\u7528\u53cc\u5411\u94fe\u8868\uff0c\u63d2\u5165\u5220\u9664\u9ad8\u6548(O(1))\uff0c\u4f46\u968f\u673a\u8bbf\u95ee\u6162(O(n))\u3002Vector\u901a\u8fc7\u540c\u6b65\u65b9\u6cd5\u5b9e\u73b0\u7ebf\u7a0b\u5b89\u5168\uff0c\u4f46\u6027\u80fd\u8f83\u5dee\uff1bArrayList\u548cLinkedList\u5219\u975e\u7ebf\u7a0b\u5b89\u5168\u3002ArrayList\u6269\u5bb91.5\u500d\uff0cVector\u9ed8\u8ba42\u500d\u3002LinkedList\u8fd8\u5b9e\u73b0Deque\u63a5_java vector\u548carraylist<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[99,3027,190,4196],"topic":[],"class_list":["post-44666","post","type-post","status-publish","format-standard","hentry","category-server","tag-java","tag-list","tag-190","tag-4196"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Java \u4e2d ArrayList\u3001Vector\u3001LinkedList \u7684\u6838\u5fc3\u533a\u522b\u4e0e\u5e94\u7528\u573a\u666f - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/44666.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Java \u4e2d ArrayList\u3001Vector\u3001LinkedList \u7684\u6838\u5fc3\u533a\u522b\u4e0e\u5e94\u7528\u573a\u666f - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb766\u6b21\uff0c\u70b9\u8d5e3\u6b21\uff0c\u6536\u85cf8\u6b21\u3002\u6458\u8981\uff1a 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