Search⌘ K
AI Features
Home
Courses
Grokking the Coding Interview Patterns in Python

Solution: Delete N Nodes After M Nodes of a Linked List

Understand how to modify a linked list in place by traversing and deleting nodes after keeping a specified number. This lesson teaches an efficient approach to delete N nodes after M nodes repeatedly until the list ends, helping you apply pointer manipulation techniques to optimize linked list operations.

We'll cover the following...

Statement

Given the head of a linked list and two integers, m and n, remove some specific nodes from the list and return the head of the modified, linked list. The list should be traversed, and nodes removed as follows:

  1. Start with the head node and set it as the current node.

  2. Traverse the next m nodes from the current node without deleting them.

  3. Traverse the next n nodes and delete them.

  4. Repeat steps 2 and 3 above until the end of the linked list is reached.

Constraints:

  • 1≤1 \leq Node ≤103\leq 10^3 ...