mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
synced 2025-01-11 11:08:15 +08:00
186 lines
23 KiB
JSON
186 lines
23 KiB
JSON
{
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"data": {
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"question": {
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"questionId": "1000257",
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"questionFrontendId": "剑指 Offer II 021",
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"categoryTitle": "LCOF2",
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"boundTopicId": 910260,
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"title": "删除链表的倒数第 n 个结点",
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"titleSlug": "SLwz0R",
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"content": "<p>English description is not available for the problem. Please switch to Chinese.</p>\n",
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"translatedTitle": "删除链表的倒数第 n 个结点",
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"translatedContent": "<p>给定一个链表，删除链表的倒数第 <code>n</code><em> </em>个结点，并且返回链表的头结点。</p>\n\n<p> </p>\n\n<p><strong>示例 1：</strong></p>\n\n<p><img alt=\"\" src=\"https://assets.leetcode.com/uploads/2020/10/03/remove_ex1.jpg\" style=\"width: 542px; height: 222px;\" /></p>\n\n<pre>\n<strong>输入：</strong>head = [1,2,3,4,5], n = 2\n<strong>输出：</strong>[1,2,3,5]\n</pre>\n\n<p><strong>示例 2：</strong></p>\n\n<pre>\n<strong>输入：</strong>head = [1], n = 1\n<strong>输出：</strong>[]\n</pre>\n\n<p><strong>示例 3：</strong></p>\n\n<pre>\n<strong>输入：</strong>head = [1,2], n = 1\n<strong>输出：</strong>[1]\n</pre>\n\n<p> </p>\n\n<p><strong>提示：</strong></p>\n\n<ul>\n\t<li>链表中结点的数目为 <code>sz</code></li>\n\t<li><code>1 <= sz <= 30</code></li>\n\t<li><code>0 <= Node.val <= 100</code></li>\n\t<li><code>1 <= n <= sz</code></li>\n</ul>\n\n<p> </p>\n\n<p><strong>进阶：</strong>能尝试使用一趟扫描实现吗？</p>\n\n<p> </p>\n\n<p><meta charset=\"UTF-8\" />注意：本题与主站 19 题相同： <a href=\"https://leetcode-cn.com/problems/remove-nth-node-from-end-of-list/\">https://leetcode-cn.com/problems/remove-nth-node-from-end-of-list/</a></p>\n",
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"difficulty": "Medium",
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"name": "Linked List",
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"translatedName": "链表",
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"name": "Two Pointers",
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"code": "/**\n * Definition for singly-linked list.\n * struct ListNode {\n * int val;\n * ListNode *next;\n * ListNode() : val(0), next(nullptr) {}\n * ListNode(int x) : val(x), next(nullptr) {}\n * ListNode(int x, ListNode *next) : val(x), next(next) {}\n * };\n */\nclass Solution {\npublic:\n ListNode* removeNthFromEnd(ListNode* head, int n) {\n\n }\n};",
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"code": "/**\n * Definition for singly-linked list.\n * public class ListNode {\n * int val;\n * ListNode next;\n * ListNode() {}\n * ListNode(int val) { this.val = val; }\n * ListNode(int val, ListNode next) { this.val = val; this.next = next; }\n * }\n */\nclass Solution {\n public ListNode removeNthFromEnd(ListNode head, int n) {\n\n }\n}",
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},
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{
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"lang": "Python",
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"langSlug": "python",
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"code": "# Definition for singly-linked list.\n# class ListNode(object):\n# def __init__(self, val=0, next=None):\n# self.val = val\n# self.next = next\nclass Solution(object):\n def removeNthFromEnd(self, head, n):\n \"\"\"\n :type head: ListNode\n :type n: int\n :rtype: ListNode\n \"\"\"",
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"code": "# Definition for singly-linked list.\n# class ListNode:\n# def __init__(self, val=0, next=None):\n# self.val = val\n# self.next = next\nclass Solution:\n def removeNthFromEnd(self, head: ListNode, n: int) -> ListNode:",
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"__typename": "CodeSnippetNode"
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},
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{
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"lang": "C",
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"langSlug": "c",
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"code": "/**\n * Definition for singly-linked list.\n * struct ListNode {\n * int val;\n * struct ListNode *next;\n * };\n */\n\n\nstruct ListNode* removeNthFromEnd(struct ListNode* head, int n){\n\n}",
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"code": "/**\n * Definition for singly-linked list.\n * public class ListNode {\n * public int val;\n * public ListNode next;\n * public ListNode(int val=0, ListNode next=null) {\n * this.val = val;\n * this.next = next;\n * }\n * }\n */\npublic class Solution {\n public ListNode RemoveNthFromEnd(ListNode head, int n) {\n\n }\n}",
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"__typename": "CodeSnippetNode"
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},
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{
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"lang": "JavaScript",
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"code": "/**\n * Definition for singly-linked list.\n * function ListNode(val, next) {\n * this.val = (val===undefined ? 0 : val)\n * this.next = (next===undefined ? null : next)\n * }\n */\n/**\n * @param {ListNode} head\n * @param {number} n\n * @return {ListNode}\n */\nvar removeNthFromEnd = function(head, n) {\n\n};",
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},
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{
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"lang": "Ruby",
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"langSlug": "ruby",
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"code": "# Definition for singly-linked list.\n# class ListNode\n# attr_accessor :val, :next\n# def initialize(val = 0, _next = nil)\n# @val = val\n# @next = _next\n# end\n# end\n# @param {ListNode} head\n# @param {Integer} n\n# @return {ListNode}\ndef remove_nth_from_end(head, n)\n\nend",
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{
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"lang": "Swift",
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"langSlug": "swift",
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"code": "/**\n * Definition for singly-linked list.\n * public class ListNode {\n * public var val: Int\n * public var next: ListNode?\n * public init() { self.val = 0; self.next = nil; }\n * public init(_ val: Int) { self.val = val; self.next = nil; }\n * public init(_ val: Int, _ next: ListNode?) { self.val = val; self.next = next; }\n * }\n */\nclass Solution {\n func removeNthFromEnd(_ head: ListNode?, _ n: Int) -> ListNode? {\n\n }\n}",
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"__typename": "CodeSnippetNode"
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"lang": "Go",
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"code": "/**\n * Definition for singly-linked list.\n * type ListNode struct {\n * Val int\n * Next *ListNode\n * }\n */\nfunc removeNthFromEnd(head *ListNode, n int) *ListNode {\n\n}",
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"lang": "Scala",
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"code": "/**\n * Definition for singly-linked list.\n * class ListNode(_x: Int = 0, _next: ListNode = null) {\n * var next: ListNode = _next\n * var x: Int = _x\n * }\n */\nobject Solution {\n def removeNthFromEnd(head: ListNode, n: Int): ListNode = {\n\n }\n}",
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{
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"lang": "Kotlin",
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"langSlug": "kotlin",
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"code": "/**\n * Example:\n * var li = ListNode(5)\n * var v = li.`val`\n * Definition for singly-linked list.\n * class ListNode(var `val`: Int) {\n * var next: ListNode? = null\n * }\n */\nclass Solution {\n fun removeNthFromEnd(head: ListNode?, n: Int): ListNode? {\n\n }\n}",
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"__typename": "CodeSnippetNode"
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},
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{
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"lang": "Rust",
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"langSlug": "rust",
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"code": "// Definition for singly-linked list.\n// #[derive(PartialEq, Eq, Clone, Debug)]\n// pub struct ListNode {\n// pub val: i32,\n// pub next: Option<Box<ListNode>>\n// }\n//\n// impl ListNode {\n// #[inline]\n// fn new(val: i32) -> Self {\n// ListNode {\n// next: None,\n// val\n// }\n// }\n// }\nimpl Solution {\n pub fn remove_nth_from_end(head: Option<Box<ListNode>>, n: i32) -> Option<Box<ListNode>> {\n\n }\n}",
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"__typename": "CodeSnippetNode"
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"lang": "PHP",
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"code": "/**\n * Definition for a singly-linked list.\n * class ListNode {\n * public $val = 0;\n * public $next = null;\n * function __construct($val = 0, $next = null) {\n * $this->val = $val;\n * $this->next = $next;\n * }\n * }\n */\nclass Solution {\n\n /**\n * @param ListNode $head\n * @param Integer $n\n * @return ListNode\n */\n function removeNthFromEnd($head, $n) {\n\n }\n}",
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"__typename": "CodeSnippetNode"
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"code": "/**\n * Definition for singly-linked list.\n * class ListNode {\n * val: number\n * next: ListNode | null\n * constructor(val?: number, next?: ListNode | null) {\n * this.val = (val===undefined ? 0 : val)\n * this.next = (next===undefined ? null : next)\n * }\n * }\n */\n\nfunction removeNthFromEnd(head: ListNode | null, n: number): ListNode | null {\n\n};",
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{
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"lang": "Racket",
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"langSlug": "racket",
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"code": "; Definition for singly-linked list:\n#|\n\n; val : integer?\n; next : (or/c list-node? #f)\n(struct list-node\n (val next) #:mutable #:transparent)\n\n; constructor\n(define (make-list-node [val 0])\n (list-node val #f))\n\n|#\n\n(define/contract (remove-nth-from-end head n)\n (-> (or/c list-node? #f) exact-integer? (or/c list-node? #f))\n\n )",
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"__typename": "CodeSnippetNode"
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{
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"lang": "Erlang",
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"langSlug": "erlang",
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"code": "%% Definition for singly-linked list.\n%%\n%% -record(list_node, {val = 0 :: integer(),\n%% next = null :: 'null' | #list_node{}}).\n\n-spec remove_nth_from_end(Head :: #list_node{} | null, N :: integer()) -> #list_node{} | null.\nremove_nth_from_end(Head, N) ->\n .",
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{
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"lang": "Elixir",
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"langSlug": "elixir",
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"code": "# Definition for singly-linked list.\n#\n# defmodule ListNode do\n# @type t :: %__MODULE__{\n# val: integer,\n# next: ListNode.t() | nil\n# }\n# defstruct val: 0, next: nil\n# end\n\ndefmodule Solution do\n @spec remove_nth_from_end(head :: ListNode.t | nil, n :: integer) :: ListNode.t | nil\n def remove_nth_from_end(head, n) do\n\n end\nend",
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