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Grokking the Coding Interview Patterns in Python

Solution: Split Linked List in Parts

Explore how to split a singly linked list into k consecutive parts with sizes as equal as possible. Understand in-place list manipulation techniques to maintain order and handle uneven distribution, ensuring earlier parts are larger when necessary. This lesson teaches an O(n) time and O(1) space approach to partition linked lists efficiently.

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Statement

You are given head of a singly linked list and an integer, k. Your task is to split the linked list into k consecutive parts.

  • Each part should have a size as equal as possible, with the difference between any two parts being at most 11.

  • If the list cannot be evenly divided, the earlier parts should have more nodes than the later ones.

  • Any parts that cannot be filled with nodes should be represented as NULL.

  • The parts must appear in the same order as in the input-linked list.

Return an array of the k parts, maintaining the specified conditions.

Constraints:

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