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Problem: Rotate List

Medium
30 min
Explore how to rotate a singly linked list by k positions to the right using in-place operations. Understand constraints and apply an efficient approach to shift nodes without extra memory. This lesson helps you master linked list rotations, improving your coding interview skills.

Statement

You are given the head of a singly linked list and a non-negative integer k. Your task is to rotate the list to the right by k positions.

A right rotation by 1 means the last node becomes the new head, and every other node shifts one position to the right.

Return the head of the rotated linked list.

Constraints:

  • The number of nodes in the list is in the range [0, 500].

  • 100-100 \leq Node.val 100\leq 100

  • 00 \leq k 2×109\leq 2 \times 10^9

Problem
Ask
Submissions

Problem: Rotate List

Medium
30 min
Explore how to rotate a singly linked list by k positions to the right using in-place operations. Understand constraints and apply an efficient approach to shift nodes without extra memory. This lesson helps you master linked list rotations, improving your coding interview skills.

Statement

You are given the head of a singly linked list and a non-negative integer k. Your task is to rotate the list to the right by k positions.

A right rotation by 1 means the last node becomes the new head, and every other node shifts one position to the right.

Return the head of the rotated linked list.

Constraints:

  • The number of nodes in the list is in the range [0, 500].

  • 100-100 \leq Node.val 100\leq 100

  • 00 \leq k 2×109\leq 2 \times 10^9