{"id":1408,"date":"2026-04-28T15:21:47","date_gmt":"2026-04-28T07:21:47","guid":{"rendered":"https:\/\/yunyanglib.cn\/?p=1408"},"modified":"2026-04-28T15:21:48","modified_gmt":"2026-04-28T07:21:48","slug":"%e3%80%90java%e3%80%91linkedlist-%e8%af%a6%e8%a7%a3%ef%bc%9a%e4%bb%8e%e5%ba%95%e5%b1%82%e5%8e%9f%e7%90%86%e5%88%b0%e5%ae%9e%e6%88%98%e5%ba%94%e7%94%a8","status":"publish","type":"post","link":"https:\/\/yunyanglib.cn\/?p=1408","title":{"rendered":"\u3010Java\u3011LinkedList \u8be6\u89e3\uff1a\u4ece\u5e95\u5c42\u539f\u7406\u5230\u5b9e\u6218\u5e94\u7528"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u5927\u5bb6\u597d\uff0c\u6211\u662f YunYang\uff5e \u4e0a\u4e00\u7bc7\u7ed9\u5927\u5bb6\u8be6\u89e3\u4e86 ArrayList \u7684\u6838\u5fc3\u7528\u6cd5\u4e0e\u6e90\u7801\u5b9e\u73b0\uff0c\u4eca\u5929\u54b1\u4eec\u7ee7\u7eed\u6df1\u6316 Java \u96c6\u5408\u6846\u67b6\uff0c\u804a\u804a\u53e6\u4e00\u4e2a\u9ad8\u9891\u4f7f\u7528\u7684 List \u5b9e\u73b0\u7c7b \u2014\u2014LinkedList\u3002\u4f5c\u4e3a ArrayList \u7684 \u201c\u540c\u95e8\u5144\u5f1f\u201d\uff0cLinkedList \u57fa\u4e8e\u5b8c\u5168\u4e0d\u540c\u7684\u5e95\u5c42\u7ed3\u6784\uff0c\u5728\u7279\u5b9a\u573a\u666f\u4e0b\u80fd\u53d1\u6325\u51fa\u538b\u5012\u6027\u7684\u6027\u80fd\u4f18\u52bf\u3002\u8fd9\u7bc7\u6587\u7ae0\u54b1\u4eec\u5c31\u4ece\u539f\u7406\u5230\u5b9e\u6218\uff0c\u628a LinkedList \u5f7b\u5e95\u5403\u900f\uff01<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e00\u3001\u4e3a\u4ec0\u4e48\u9009\u62e9 LinkedList\uff1f\u2014\u2014 \u94fe\u8868\u7ed3\u6784\u7684\u5929\u751f\u4f18\u52bf<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u804a LinkedList \u4e4b\u524d\uff0c\u5148\u601d\u8003\u4e00\u4e2a\u95ee\u9898\uff1a\u65e2\u7136\u6709\u4e86 ArrayList\uff0c\u4e3a\u4ec0\u4e48\u8fd8\u9700\u8981 LinkedList\uff1f\u7b54\u6848\u85cf\u5728\u5e95\u5c42\u6570\u636e\u7ed3\u6784\u91cc \u2014\u2014<strong>LinkedList \u57fa\u4e8e\u53cc\u5411\u94fe\u8868\u5b9e\u73b0<\/strong>\uff0c\u800c ArrayList \u57fa\u4e8e\u52a8\u6001\u6570\u7ec4\u3002\u8fd9\u79cd\u7ed3\u6784\u5dee\u5f02\u8ba9 LinkedList \u5728\u4ee5\u4e0b\u573a\u666f\u4e2d\u8131\u9896\u800c\u51fa\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u52a8\u6001\u6269\u5bb9\u65e0\u538b\u529b<\/strong>\uff1a\u94fe\u8868\u4e0d\u9700\u8981\u9884\u5148\u5206\u914d\u56fa\u5b9a\u5185\u5b58\uff0c\u5143\u7d20\u6dfb\u52a0\u65f6\u76f4\u63a5\u521b\u5efa\u8282\u70b9\u5373\u53ef\uff0c\u5b8c\u5168\u907f\u514d\u4e86\u6570\u7ec4\u6269\u5bb9\u65f6\u7684\u62f7\u8d1d\u5f00\u9500\u3002<\/li>\n\n\n\n<li><strong>\u63d2\u5165\u5220\u9664\u6548\u7387\u6781\u9ad8<\/strong>\uff1a\u65e0\u8bba\u662f\u5728\u94fe\u8868\u5934\u90e8\u3001\u5c3e\u90e8\u8fd8\u662f\u4e2d\u95f4\u4f4d\u7f6e\u64cd\u4f5c\u5143\u7d20\uff0c\u53ea\u9700\u8c03\u6574\u76f8\u90bb\u8282\u70b9\u7684\u6307\u9488\uff08prev\/next\uff09\uff0c\u65f6\u95f4\u590d\u6742\u5ea6\u4ec5\u4e3a O (1)\uff1b\u800c ArrayList \u5219\u9700\u8981\u79fb\u52a8\u5927\u91cf\u5143\u7d20\uff0c\u65f6\u95f4\u590d\u6742\u5ea6\u4e3a O (n)\u3002<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u91cc\u8865\u5145\u4e0b\u94fe\u8868\u7684\u5e38\u89c1\u7c7b\u578b\uff0c\u5e2e\u5927\u5bb6\u7406\u89e3 LinkedList \u7684\u8bbe\u8ba1\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5355\u5411\u94fe\u8868\uff1a\u6bcf\u4e2a\u8282\u70b9\u53ea\u6709 next \u6307\u9488\uff0c\u53ea\u80fd\u5355\u5411\u904d\u5386\uff1b<\/li>\n\n\n\n<li>\u53cc\u5411\u94fe\u8868\uff1a\u6bcf\u4e2a\u8282\u70b9\u540c\u65f6\u62e5\u6709 prev \u548c next \u6307\u9488\uff0c\u652f\u6301\u53cc\u5411\u904d\u5386\uff08LinkedList \u91c7\u7528\u6b64\u7ed3\u6784\uff09\uff1b<\/li>\n\n\n\n<li>\u5faa\u73af\u94fe\u8868\uff1a\u9996\u5c3e\u8282\u70b9\u76f8\u8fde\uff0c\u9002\u7528\u4e8e\u73af\u5f62\u573a\u666f\uff08\u5982\u7ea6\u745f\u592b\u95ee\u9898\uff09\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e8c\u3001LinkedList \u6838\u5fc3\u7ed3\u6784\u63ed\u79d8<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. \u8282\u70b9\u7c7b\uff08Node\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">LinkedList \u7684\u5e95\u5c42\u6838\u5fc3\u662f Node \u9759\u6001\u5185\u90e8\u7c7b\uff0c\u6bcf\u4e2a\u8282\u70b9\u5305\u542b\u4e09\u4e2a\u90e8\u5206\uff1a\u5143\u7d20\u672c\u8eab\u3001\u524d\u9a71\u8282\u70b9\u6307\u9488\u3001\u540e\u7ee7\u8282\u70b9\u6307\u9488\u3002\u6e90\u7801\u5982\u4e0b\uff08\u7b80\u5316\u7248\uff09\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>private static class Node {\n    E item; \/\/ \u5b58\u50a8\u7684\u5143\u7d20\n    Node next\/\/ \u4e0b\u4e00\u4e2a\u8282\u70b9\u6307\u9488\n    Node prev; \/\/ \u4e0a\u4e00\u4e2a\u8282\u70b9\u6307\u9488\n\n    \/\/ \u6784\u9020\u65b9\u6cd5\uff1a\u521d\u59cb\u5316\u8282\u70b9\n    Node(Node E element, Node next) {\n        this.prev = prev;\n        this.item = element;\n        this.next = next;\n    }\n}\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">2. \u94fe\u8868\u7ed3\u6784\u56fe\u793a<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">LinkedList \u7684\u94fe\u8868\u5173\u7cfb\u975e\u5e38\u6e05\u6670\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9996\u8282\u70b9\uff08first\uff09\uff1aprev \u6307\u9488\u4e3a null\uff1b<\/li>\n\n\n\n<li>\u5c3e\u8282\u70b9\uff08last\uff09\uff1anext \u6307\u9488\u4e3a null\uff1b<\/li>\n\n\n\n<li>\u4e2d\u95f4\u8282\u70b9\uff1aprev \u6307\u5411\u524d\u9a71\u8282\u70b9\uff0cnext \u6307\u5411\u540e\u7ee7\u8282\u70b9\uff1b<\/li>\n\n\n\n<li>\u7a7a\u94fe\u8868\uff1afirst \u548c last \u5747\u4e3a null\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u793a\u610f\u56fe\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>        first             last\n          \u2193                \u2193\n&#91;null] \u2190 &#91;A] \u2194 &#91;B] \u2194 &#91;C]\u2194 &#91;D] \u2192 &#91;null]\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e09\u3001LinkedList \u6838\u5fc3\u64cd\u4f5c\u5b9e\u6218\uff08\u9644\u4ee3\u7801\uff09<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. \u521d\u59cb\u5316<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">LinkedList \u65e0\u9700\u6307\u5b9a\u521d\u59cb\u5bb9\u91cf\uff0c\u521b\u5efa\u65f6\u76f4\u63a5\u521d\u59cb\u5316\u5373\u53ef\uff0c\u6dfb\u52a0\u7b2c\u4e00\u4e2a\u5143\u7d20\u65f6\u4f1a\u81ea\u52a8\u521b\u5efa\u9996\u8282\u70b9\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u65b9\u5f0f1\uff1a\u65e0\u53c2\u6784\u9020\uff08\u63a8\u8350\uff09\nLinkedList&lt;String> list = new LinkedList&lt;>();\n\/\/ \u65b9\u5f0f2\uff1a\u901a\u8fc7\u96c6\u5408\u521d\u59cb\u5316\nList&lt;String> initList = Arrays.asList(\"a\", \"b\", \"c\", \"d\");\nLinkedList&lt;String> list2 = new LinkedList&lt;>(initList);\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">2. \u65b0\u589e\u5143\u7d20\uff08\u589e\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">LinkedList \u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u6dfb\u52a0\u65b9\u6cd5\uff0c\u8986\u76d6\u4e0d\u540c\u573a\u666f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u5c3e\u90e8\u6dfb\u52a0\uff08\u9ed8\u8ba4\uff0c\u7b49\u4ef7\u4e8e addLast ()\uff09\nLinkedList&lt;String> list = new LinkedList&lt;>();\nlist.add(\"\u5f20\u4e09\");\nlist.addLast(\"\u674e\u56db\");\n\n\/\/ 2. \u5934\u90e8\u6dfb\u52a0\nlist.addFirst(\"\u738b\u4e94\");\n\n\/\/ 3. \u6307\u5b9a\u7d22\u5f15\u6dfb\u52a0\uff08\u6ce8\u610f\uff1a\u7d22\u5f15\u67e5\u627e\u9700\u904d\u5386\uff0c\u65f6\u95f4\u590d\u6742\u5ea6 O(n)\uff09\nlist.add(1, \"\u8d75\u516d\"); \/\/ \u5728\u7d22\u5f151\u4f4d\u7f6e\u63d2\u5165\"\u8d75\u516d\"\n\n\/\/ \u8f93\u51fa\u7ed3\u679c\uff1a&#91;\u738b\u4e94, \u8d75\u516d, \u5f20\u4e09, \u674e\u56db]\nSystem.out.println(list);\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">3. \u5220\u9664\u5143\u7d20\uff08\u5220\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u652f\u6301\u6309\u7d22\u5f15\u3001\u6309\u5143\u7d20\u3001\u9996\u5c3e\u5220\u9664\u7b49\u591a\u79cd\u65b9\u5f0f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>LinkedList&lt;String> list = new LinkedList&lt;>(Arrays.asList(\"a\", \"b\", \"c\", \"b\", \"d\"));\n\n\/\/ 1. \u5220\u9664\u9996\u8282\u70b9\uff08\u4e24\u79cd\u65b9\u5f0f\u7b49\u4ef7\uff09\nlist.removeFirst(); \nlist.remove(); \/\/ \u65e0\u53c2remove()\u9ed8\u8ba4\u5220\u9664\u9996\u8282\u70b9\n\n\/\/ 2. \u5220\u9664\u5c3e\u8282\u70b9\nlist.removeLast();\n\n\/\/ 3. \u6309\u7d22\u5f15\u5220\u9664\nlist.remove(0); \/\/ \u5220\u9664\u7d22\u5f150\u7684\u5143\u7d20\n\n\/\/ 4. \u6309\u5143\u7d20\u5220\u9664\uff08\u5220\u9664\u7b2c\u4e00\u4e2a\u5339\u914d\u7684\u5143\u7d20\uff09\nlist.remove(\"b\");\n\n\/\/ \u8f93\u51fa\u7ed3\u679c\uff1a&#91;]\uff08\u4e0a\u8ff0\u64cd\u4f5c\u540e\u94fe\u8868\u4e3a\u7a7a\uff09\nSystem.out.println(list);\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">4. \u4fee\u6539\u5143\u7d20\uff08\u6539\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u901a\u8fc7 set () \u65b9\u6cd5\u6309\u7d22\u5f15\u4fee\u6539\u5143\u7d20\uff0c\u9700\u6ce8\u610f\u7d22\u5f15\u8d8a\u754c\u95ee\u9898\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>LinkedList&lt;String> list = new LinkedList&lt;>(Arrays.asList(\"\u82f9\u679c\",\"\u9999\u8549\", \"\u6a58\u5b50\"));\n\n\/\/ \u5c06\u7d22\u5f151\u7684\u5143\u7d20\u6539\u4e3a\"\u8461\u8404\"\nlist.set(1, \"\u8461\u8404\");\n\n\/\/ \u8f93\u51fa\u7ed3\u679c\uff1a&#91;\u82f9\u679c, \u8461\u8404, \u6a58\u5b50]\nSystem.out.println(list);\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">5. \u67e5\u627e\u5143\u7d20\uff08\u67e5\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u63d0\u4f9b\u4e86\u6309\u7d22\u5f15\u3001\u6309\u5143\u7d20\u3001\u9996\u5c3e\u67e5\u8be2\u7b49\u65b9\u6cd5\uff0c\u6ce8\u610f\u7d22\u5f15\u67e5\u8be2\u7684\u65f6\u95f4\u590d\u6742\u5ea6\u4e3a O (n)\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>LinkedList&lt;String> list = new LinkedList&lt;>(Arrays.asList(\"a\", \"b\", \"c\", \"d\"));\n\n\/\/ 1. \u6309\u7d22\u5f15\u67e5\u8be2\nString elem = list.get(2); \/\/ \u7ed3\u679c\uff1a\"c\"\n\n\/\/ 2. \u67e5\u627e\u5143\u7d20\u4f4d\u7f6e\uff08\u8fd4\u56de\u7b2c\u4e00\u4e2a\u5339\u914d\u7684\u7d22\u5f15\uff0c\u672a\u627e\u5230\u8fd4\u56de-1\uff09\nint index = list.indexOf(\"d\"); \/\/ \u7ed3\u679c\uff1a3\n\n\/\/ 3. \u83b7\u53d6\u9996\u5c3e\u5143\u7d20\uff08\u65e0\u7d22\u5f15\u904d\u5386\uff0c\u6548\u7387O(1)\uff09\nString first = list.getFirst(); \/\/ \u7ed3\u679c\uff1a\"a\"\nString last = list.getLast(); \/\/ \u7ed3\u679c\uff1a\"d\"\n\n\/\/ 4. \u5f39\u51fa\u5143\u7d20\uff08\u5220\u9664\u5e76\u8fd4\u56de\uff0c\u961f\u5217\u5e38\u7528\uff09\nString polled = list.poll(); \/\/ \u5220\u9664\u5e76\u8fd4\u56de\"a\"\uff0c\u94fe\u8868\u53d8\u4e3a&#91;\"b\",\"c\",\"d\"]\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u56db\u3001LinkedList vs ArrayList\uff1a\u6838\u5fc3\u5dee\u5f02\u4e0e\u5e94\u7528\u573a\u666f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f88\u591a\u540c\u5b66\u4f1a\u7ea0\u7ed3\u4ec0\u4e48\u65f6\u5019\u7528 LinkedList\uff0c\u4ec0\u4e48\u65f6\u5019\u7528 ArrayList\u3002\u8fd9\u91cc\u76f4\u63a5\u4e0a\u5bf9\u6bd4\u8868\uff0c\u4e00\u76ee\u4e86\u7136\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\u64cd\u4f5c\u7c7b\u578b<\/th><th class=\"has-text-align-left\" data-align=\"left\">LinkedList<\/th><th class=\"has-text-align-left\" data-align=\"left\">ArrayList<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">\u968f\u673a\u8bbf\u95ee\uff08get\uff09<\/td><td class=\"has-text-align-left\" data-align=\"left\">O(n)<\/td><td class=\"has-text-align-left\" data-align=\"left\">O(1)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u5c3e\u90e8\u6dfb\u52a0\uff08add\uff09<\/td><td class=\"has-text-align-left\" data-align=\"left\">O(1)<\/td><td class=\"has-text-align-left\" data-align=\"left\">O(1)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u4e2d\u95f4\u63d2\u5165 \/ \u5220\u9664<\/td><td class=\"has-text-align-left\" data-align=\"left\">O(1)<\/td><td class=\"has-text-align-left\" data-align=\"left\">O(n)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u5185\u5b58\u5360\u7528<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u8f83\u9ad8\uff08\u8282\u70b9\u5f00\u9500\uff09<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u8f83\u4f4e\uff08\u8fde\u7eed\u5b58\u50a8\uff09<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u6700\u4f73\u5b9e\u8df5\u573a\u666f<\/strong>\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u4f18\u5148\u7528 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fa-caret-right\"><\/i><\/a>\n\t\t\t<\/div>\n","protected":false},"author":1,"featured_media":1410,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[15],"class_list":["post-1408","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-java","tag-java"],"_links":{"self":[{"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=\/wp\/v2\/posts\/1408","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1408"}],"version-history":[{"count":2,"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=\/wp\/v2\/posts\/1408\/revisions"}],"predecessor-version":[{"id":1411,"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=\/wp\/v2\/posts\/1408\/revisions\/1411"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=\/wp\/v2\/media\/1410"}],"wp:attachment":[{"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1408"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1408"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yunyanglib.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1408"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}