{"id":916,"date":"2025-10-26T19:22:19","date_gmt":"2025-10-26T11:22:19","guid":{"rendered":"https:\/\/www.guanhaobo.cn\/?p=916"},"modified":"2025-10-26T19:22:19","modified_gmt":"2025-10-26T11:22:19","slug":"leetcode-19-%e5%88%a0%e9%99%a4%e9%93%be%e8%a1%a8%e7%9a%84%e5%80%92%e6%95%b0%e7%ac%ac-n-%e4%b8%aa%e7%bb%93%e7%82%b9","status":"publish","type":"post","link":"https:\/\/www.guanhaobo.cn\/?p=916","title":{"rendered":"LeetCode 19 \u2013 \u5220\u9664\u94fe\u8868\u7684\u5012\u6570\u7b2c N \u4e2a\u7ed3\u70b9"},"content":{"rendered":"

\u9898\u76ee\u63cf\u8ff0<\/h1>\n

\u7ed9\u4f60\u4e00\u4e2a\u94fe\u8868\uff0c\u5220\u9664\u94fe\u8868\u7684\u5012\u6570\u7b2c n \u4e2a\u7ed3\u70b9\uff0c\u5e76\u4e14\u8fd4\u56de\u94fe\u8868\u7684\u5934\u7ed3\u70b9\u3002<\/p>\n

\u793a\u4f8b1:
\n\"\"<\/a>
\n\u8f93\u5165\uff1ahead = [1,2,3,4,5], n = 2
\n\u8f93\u51fa\uff1a[1,2,3,5]<\/p>\n

\u9898\u76ee\u5206\u6790<\/h1>\n

\u5feb\u6162\u6307\u9488\uff0c\u5feb\u6307\u9488\u63d0\u524d\u8d70 n \u6b65\u3002
\n\u540e\u9762\u518d\u540c\u65f6\u8d70\uff0c\u5f53\u5feb\u6307\u9488\u5230\u8fbe\u94fe\u8868\u5c3e\u90e8\u65f6\uff0c\u6162\u6307\u9488\u6070\u597d\u5728\u7b2c n \u4e2a\u5143\u7d20\u524d\u9762\u3002
\n\u4f7f\u7528\u865a\u62df\u8282\u70b9\u505a\u5934\u8282\u70b9\uff0c\u53ef\u4ee5\u907f\u514d\u5f88\u591a\u8fb9\u754ccase\u3002<\/p>\n

Java<\/h1>\n
public ListNode removeNthFromEnd(ListNode head, int n) {\n    ListNode fake = new ListNode(0);\n    fake.next = head;\n    ListNode slow = fake, fast = fake;\n    while (n > 0 && fast != null) {\n        fast = fast.next;\n        n--;\n    }\n    while (fast != null && fast.next != null) {\n        slow = slow.next;\n        fast = fast.next;\n    }\n    slow.next = slow.next.next;\n    return fake.next;\n}\n<\/code><\/pre>\n
Kotlin<\/h1>\n
fun removeNthFromEnd(head: ListNode?, n: Int): ListNode? {\n    val fake = ListNode(0)\n    fake.next = head\n    var slow: ListNode? = fake\n    var fast: ListNode? = fake\n    var count = n\n    while (count > 0 && fast != null) {\n        fast = fast.next\n        count--\n    }\n    while (fast?.next != null) {\n        slow = slow?.next\n        fast = fast.next\n    }\n    slow?.next = slow?.next?.next\n    return fake.next\n}\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
\u9898\u76ee\u63cf\u8ff0 \u7ed9\u4f60\u4e00\u4e2a\u94fe\u8868\uff0c\u5220\u9664\u94fe\u8868\u7684\u5012\u6570\u7b2c n \u4e2a\u7ed3\u70b9\uff0c\u5e76\u4e14\u8fd4\u56de\u94fe\u8868\u7684\u5934\u7ed3\u70b9\u3002 \u793a\u4f8b1: \u8f93\u5165\uff1ahead = [ […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[20,75,84],"class_list":["post-916","post","type-post","status-publish","format-standard","hentry","category-algo","tag-leetcode","tag-75","tag-84"],"_links":{"self":[{"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=\/wp\/v2\/posts\/916","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=916"}],"version-history":[{"count":1,"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=\/wp\/v2\/posts\/916\/revisions"}],"predecessor-version":[{"id":917,"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=\/wp\/v2\/posts\/916\/revisions\/917"}],"wp:attachment":[{"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=916"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=916"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=916"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}