{ "data": { "question": { "questionId": "725", "questionFrontendId": "725", "categoryTitle": "Algorithms", "boundTopicId": 1901, "title": "Split Linked List in Parts", "titleSlug": "split-linked-list-in-parts", "content": "
Given the head
of a singly linked list and an integer k
, split the linked list into k
consecutive linked list parts.
The length of each part should be as equal as possible: no two parts should have a size differing by more than one. This may lead to some parts being null.
\n\nThe parts should be in the order of occurrence in the input list, and parts occurring earlier should always have a size greater than or equal to parts occurring later.
\n\nReturn an array of the k
parts.
\n
Example 1:
\n\n\nInput: head = [1,2,3], k = 5\nOutput: [[1],[2],[3],[],[]]\nExplanation:\nThe first element output[0] has output[0].val = 1, output[0].next = null.\nThe last element output[4] is null, but its string representation as a ListNode is [].\n\n\n
Example 2:
\n\n\nInput: head = [1,2,3,4,5,6,7,8,9,10], k = 3\nOutput: [[1,2,3,4],[5,6,7],[8,9,10]]\nExplanation:\nThe input has been split into consecutive parts with size difference at most 1, and earlier parts are a larger size than the later parts.\n\n\n
\n
Constraints:
\n\n[0, 1000]
.0 <= Node.val <= 1000
1 <= k <= 50
给你一个头结点为 head
的单链表和一个整数 k
,请你设计一个算法将链表分隔为 k
个连续的部分。
每部分的长度应该尽可能的相等:任意两部分的长度差距不能超过 1 。这可能会导致有些部分为 null 。
\n\n这 k
个部分应该按照在链表中出现的顺序排列,并且排在前面的部分的长度应该大于或等于排在后面的长度。
返回一个由上述 k
部分组成的数组。
示例 1:
\n\n\n输入:head = [1,2,3], k = 5\n输出:[[1],[2],[3],[],[]]\n解释:\n第一个元素 output[0] 为 output[0].val = 1 ,output[0].next = null 。\n最后一个元素 output[4] 为 null ,但它作为 ListNode 的字符串表示是 [] 。\n\n\n
示例 2:
\n\n\n输入:head = [1,2,3,4,5,6,7,8,9,10], k = 3\n输出:[[1,2,3,4],[5,6,7],[8,9,10]]\n解释:\n输入被分成了几个连续的部分,并且每部分的长度相差不超过 1 。前面部分的长度大于等于后面部分的长度。\n\n\n
\n\n
提示:
\n\n[0, 1000]
0 <= Node.val <= 1000
1 <= k <= 50