{ "data": { "question": { "questionId": "1267", "questionFrontendId": "1171", "categoryTitle": "Algorithms", "boundTopicId": 22198, "title": "Remove Zero Sum Consecutive Nodes from Linked List", "titleSlug": "remove-zero-sum-consecutive-nodes-from-linked-list", "content": "

Given the head of a linked list, we repeatedly delete consecutive sequences of nodes that sum to 0 until there are no such sequences.

\r\n\r\n

After doing so, return the head of the final linked list.  You may return any such answer.

\r\n\n

 

\n

(Note that in the examples below, all sequences are serializations of ListNode objects.)

\n\n

Example 1:

\n\n
\nInput: head = [1,2,-3,3,1]\nOutput: [3,1]\nNote: The answer [1,2,1] would also be accepted.\n
\n\n

Example 2:

\n\n
\nInput: head = [1,2,3,-3,4]\nOutput: [1,2,4]\n
\n\n

Example 3:

\n\n
\nInput: head = [1,2,3,-3,-2]\nOutput: [1]\n
\n\n

 

\n

Constraints:

\n\n\n", "translatedTitle": "从链表中删去总和值为零的连续节点", "translatedContent": "

给你一个链表的头节点 head,请你编写代码,反复删去链表中由 总和 值为 0 的连续节点组成的序列,直到不存在这样的序列为止。

\n\n

删除完毕后,请你返回最终结果链表的头节点。

\n\n

 

\n\n

你可以返回任何满足题目要求的答案。

\n\n

(注意,下面示例中的所有序列,都是对 ListNode 对象序列化的表示。)

\n\n

示例 1:

\n\n
输入:head = [1,2,-3,3,1]\n输出:[3,1]\n提示:答案 [1,2,1] 也是正确的。\n
\n\n

示例 2:

\n\n
输入:head = [1,2,3,-3,4]\n输出:[1,2,4]\n
\n\n

示例 3:

\n\n
输入:head = [1,2,3,-3,-2]\n输出:[1]\n
\n\n

 

\n\n

提示:

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0 : val)\n * this.next = (next===undefined ? null : next)\n * }\n */\n/**\n * @param {ListNode} head\n * @return {ListNode}\n */\nvar removeZeroSumSublists = function(head) {\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 removeZeroSumSublists(head: 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 $head\n * @return ListNode\n */\n function removeZeroSumSublists($head) {\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 removeZeroSumSublists(_ head: 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 removeZeroSumSublists(head: ListNode?): ListNode? {\n\n }\n}", "__typename": "CodeSnippetNode" }, { "lang": "Dart", "langSlug": "dart", "code": "/**\n * Definition for singly-linked list.\n * class ListNode {\n * int val;\n * ListNode? next;\n * ListNode([this.val = 0, this.next]);\n * }\n */\nclass Solution {\n ListNode? removeZeroSumSublists(ListNode? head) {\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 removeZeroSumSublists(head *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} head\n# @return {ListNode}\ndef remove_zero_sum_sublists(head)\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 removeZeroSumSublists(head: 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 remove_zero_sum_sublists(head: Option>) -> Option> {\n\n }\n}", "__typename": "CodeSnippetNode" }, { "lang": "Racket", "langSlug": "racket", "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-zero-sum-sublists head)\n (-> (or/c list-node? #f) (or/c list-node? #f))\n )", "__typename": "CodeSnippetNode" }, { "lang": "Erlang", "langSlug": "erlang", "code": "%% Definition for singly-linked list.\n%%\n%% -record(list_node, {val = 0 :: integer(),\n%% next = null :: 'null' | #list_node{}}).\n\n-spec remove_zero_sum_sublists(Head :: #list_node{} | null) -> #list_node{} | null.\nremove_zero_sum_sublists(Head) ->\n .", "__typename": "CodeSnippetNode" }, { "lang": "Elixir", "langSlug": "elixir", "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_zero_sum_sublists(head :: ListNode.t | nil) :: ListNode.t | nil\n def remove_zero_sum_sublists(head) do\n \n end\nend", "__typename": "CodeSnippetNode" } ], "stats": "{\"totalAccepted\": \"35.2K\", \"totalSubmission\": \"66.3K\", \"totalAcceptedRaw\": 35201, \"totalSubmissionRaw\": 66336, \"acRate\": \"53.1%\"}", "hints": [ "Convert the linked list into an array.", "While you can find a non-empty subarray with sum = 0, erase it.", "Convert the array into a linked list." ], "solution": null, "status": null, "sampleTestCase": "[1,2,-3,3,1]", "metaData": "{\n \"name\": \"removeZeroSumSublists\",\n \"params\": [\n {\n \"name\": \"head\",\n \"type\": \"ListNode\"\n }\n ],\n \"return\": {\n \"type\": \"ListNode\"\n }\n}", "judgerAvailable": true, "judgeType": "large", "mysqlSchemas": [], "enableRunCode": true, "envInfo": "{\"cpp\":[\"C++\",\"

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Dart 2.17.3<\\/p>\\r\\n\\r\\n

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