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Grokking the Coding Interview Patterns

Solution: Split Linked List in Parts

Explore how to split a singly linked list into k consecutive parts where sizes differ by at most one node. Understand the step-by-step process to calculate part sizes, iterate through the list, and detach segments while maintaining the original node order. Develop skills in efficient in-place linked list manipulation with an O(n) time complexity and constant extra space.

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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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