Reverse Nodes in k-Group
Given the head of a linked list, reverse the nodes of the list k at a time, and return the modified list.
Reverse Nodes in k-Group

Given the head of a linked list, reverse the nodes of the list k at a time, and return the modified list.

Example 1:
Input: {"head":[1,2,3,4,5],"k":2}
Output: [2,1,4,3,5]
Input
arr ={"head":[1,2,3,4,5],"k":2}

Start

groupPrev ↓

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NULL
Variables
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DepthFunction Call
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