Reverse Linked List Groups

June 1, 2022 less than 1 minute read

Given a singly linked list node, and an integer k, reverse every k contiguous group of nodes.

Constraints

n ≤ 100,000 where n is the number of nodes in node

https://binarysearch.com/problems/Reverse-Linked-List-Groups

Examples

Example 1

Input

node =

k = 2

Output

answer =

Example 2

Input

node =

k = 3

Output

answer =

Solution

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Xuanken Tay