{ "data": { "question": { "questionId": "1765", "questionFrontendId": "1669", "categoryTitle": "Algorithms", "boundTopicId": 499815, "title": "Merge In Between Linked Lists", "titleSlug": "merge-in-between-linked-lists", "content": "

You are given two linked lists: list1 and list2 of sizes n and m respectively.

\n\n

Remove list1's nodes from the ath node to the bth node, and put list2 in their place.

\n\n

The blue edges and nodes in the following figure indicate the result:

\n\"\"\n

Build the result list and return its head.

\n\n

 

\n

Example 1:

\n\"\"\n
\nInput: list1 = [0,1,2,3,4,5], a = 3, b = 4, list2 = [1000000,1000001,1000002]\nOutput: [0,1,2,1000000,1000001,1000002,5]\nExplanation: We remove the nodes 3 and 4 and put the entire list2 in their place. The blue edges and nodes in the above figure indicate the result.\n
\n\n

Example 2:

\n\"\"\n
\nInput: list1 = [0,1,2,3,4,5,6], a = 2, b = 5, list2 = [1000000,1000001,1000002,1000003,1000004]\nOutput: [0,1,1000000,1000001,1000002,1000003,1000004,6]\nExplanation: The blue edges and nodes in the above figure indicate the result.\n
\n\n

 

\n

Constraints:

\n\n\n", "translatedTitle": "合并两个链表", "translatedContent": "

给你两个链表 list1 和 list2 ，它们包含的元素分别为 n 个和 m 个。

\n\n

请你将 list1 中下标从 a 到 b 的全部节点都删除，并将list2 接在被删除节点的位置。

\n\n

下图中蓝色边和节点展示了操作后的结果：

\n\"\"\n

请你返回结果链表的头指针。

\n\n

 

\n\n

示例 1：

\n\n

\"\"

\n\n
\n输入：list1 = [0,1,2,3,4,5], a = 3, b = 4, list2 = [1000000,1000001,1000002]\n输出：[0,1,2,1000000,1000001,1000002,5]\n解释：我们删除 list1 中下标为 3 和 4 的两个节点，并将 list2 接在该位置。上图中蓝色的边和节点为答案链表。\n
\n\n

示例 2：

\n\"\"\n
\n输入：list1 = [0,1,2,3,4,5,6], a = 2, b = 5, list2 = [1000000,1000001,1000002,1000003,1000004]\n输出：[0,1,1000000,1000001,1000002,1000003,1000004,6]\n解释：上图中蓝色的边和节点为答案链表。\n
\n\n

 

\n\n

提示：

\n\n\n", "isPaidOnly": false, "difficulty": "Medium", "likes": 104, "dislikes": 0, "isLiked": null, "similarQuestions": "[]", "contributors": [], "langToValidPlayground": "{\"cpp\": true, \"java\": true, \"python\": true, \"python3\": true, \"mysql\": false, \"mssql\": false, \"oraclesql\": false, \"c\": false, \"csharp\": false, \"javascript\": false, \"typescript\": false, \"bash\": false, \"php\": false, \"swift\": false, \"kotlin\": false, \"dart\": false, \"golang\": false, \"ruby\": false, \"scala\": false, \"html\": false, \"pythonml\": false, \"rust\": false, \"racket\": false, \"erlang\": false, \"elixir\": false, \"pythondata\": false, \"react\": false, \"vanillajs\": false, \"postgresql\": false}", "topicTags": [ { "name": "Linked List", "slug": "linked-list", "translatedName": "链表", "__typename": "TopicTagNode" } ], "companyTagStats": null, "codeSnippets": [ { "lang": "C++", "langSlug": "cpp", "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* mergeInBetween(ListNode* list1, int a, int b, ListNode* list2) {\n \n }\n};", "__typename": "CodeSnippetNode" }, { "lang": "Java", "langSlug": "java", "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 mergeInBetween(ListNode list1, int a, int b, ListNode list2) {\n \n }\n}", "__typename": "CodeSnippetNode" }, { "lang": "Python", "langSlug": "python", "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 mergeInBetween(self, list1, a, b, list2):\n \"\"\"\n :type list1: ListNode\n :type a: int\n :type b: int\n :type list2: ListNode\n :rtype: ListNode\n \"\"\"\n ", "__typename": "CodeSnippetNode" }, { "lang": "Python3", "langSlug": "python3", "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 mergeInBetween(self, list1: ListNode, a: int, b: int, list2: ListNode) -> ListNode:\n ", "__typename": "CodeSnippetNode" }, { "lang": "C", "langSlug": "c", "code": "/**\n * Definition for singly-linked list.\n * struct ListNode {\n * int val;\n * struct ListNode *next;\n * };\n */\n\n\nstruct ListNode* mergeInBetween(struct ListNode* list1, int a, int b, struct ListNode* list2){\n\n}", "__typename": "CodeSnippetNode" }, { "lang": "C#", "langSlug": "csharp", "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 MergeInBetween(ListNode list1, int a, int b, ListNode list2) {\n \n }\n}", "__typename": "CodeSnippetNode" }, { "lang": "JavaScript", "langSlug": "javascript", "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} list1\n * @param {number} a\n * @param {number} b\n * @param {ListNode} list2\n * @return {ListNode}\n */\nvar mergeInBetween = function(list1, a, b, list2) {\n \n};", "__typename": "CodeSnippetNode" }, { "lang": "TypeScript", "langSlug": "typescript", "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 mergeInBetween(list1: ListNode | null, a: number, b: number, list2: ListNode | null): ListNode | null {\n\n};", "__typename": "CodeSnippetNode" }, { "lang": "PHP", "langSlug": "php", "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 $list1\n * @param Integer $a\n * @param Integer $b\n * @param ListNode $list2\n * @return ListNode\n */\n function mergeInBetween($list1, $a, $b, $list2) {\n \n }\n}", "__typename": "CodeSnippetNode" }, { "lang": "Swift", "langSlug": "swift", "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 mergeInBetween(_ list1: ListNode?, _ a: Int, _ b: Int, _ list2: ListNode?) -> ListNode? {\n \n }\n}", "__typename": "CodeSnippetNode" }, { "lang": "Kotlin", "langSlug": "kotlin", "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 mergeInBetween(list1: ListNode?, a: Int, b: Int, list2: ListNode?): ListNode? {\n \n }\n}", "__typename": "CodeSnippetNode" }, { "lang": "Go", "langSlug": "golang", "code": "/**\n * Definition for singly-linked list.\n * type ListNode struct {\n * Val int\n * Next *ListNode\n * }\n */\nfunc mergeInBetween(list1 *ListNode, a int, b int, list2 *ListNode) *ListNode {\n \n}", "__typename": "CodeSnippetNode" }, { "lang": "Ruby", "langSlug": "ruby", "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} list1\n# @param {Integer} a\n# @param {Integer} b\n# @param {ListNode} list2\n# @return {ListNode}\ndef merge_in_between(list1, a, b, list2)\n \nend", "__typename": "CodeSnippetNode" }, { "lang": "Scala", "langSlug": "scala", "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 mergeInBetween(list1: ListNode, a: Int, b: Int, list2: ListNode): ListNode = {\n \n }\n}", "__typename": "CodeSnippetNode" }, { "lang": "Rust", "langSlug": "rust", "code": "// Definition for singly-linked list.\n// #[derive(PartialEq, Eq, Clone, Debug)]\n// pub struct ListNode {\n// pub val: i32,\n// pub next: Option>\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 merge_in_between(list1: Option>, a: i32, b: i32, list2: Option>) -> Option> {\n \n }\n}", "__typename": "CodeSnippetNode" } ], "stats": "{\"totalAccepted\": \"48.4K\", \"totalSubmission\": \"63K\", \"totalAcceptedRaw\": 48420, \"totalSubmissionRaw\": 62976, \"acRate\": \"76.9%\"}", "hints": [ "Check which edges need to be changed.", "Let the next node of the (a-1)th node of list1 be the 0-th node in list 2.", "Let the next node of the last node of list2 be the (b+1)-th node in list 1." ], "solution": null, "status": null, "sampleTestCase": "[0,1,2,3,4,5]\n3\n4\n[1000000,1000001,1000002]", "metaData": "{\n \"name\": \"mergeInBetween\",\n \"params\": [\n {\n \"name\": \"list1\",\n \"type\": \"ListNode\"\n },\n {\n \"type\": \"integer\",\n \"name\": \"a\"\n },\n {\n \"type\": \"integer\",\n \"name\": \"b\"\n },\n {\n \"type\": \"ListNode\",\n \"name\": \"list2\"\n }\n ],\n \"return\": {\n \"type\": \"ListNode\"\n },\n \"manual\": true\n}", "judgerAvailable": true, "judgeType": "large", "mysqlSchemas": [], "enableRunCode": true, "envInfo": "{\"cpp\":[\"C++\",\"

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