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Reverse a Sublist in a Linked List
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Reverse a Sublist in a Linked List

MediumPython

Problem

Reverse a sub list of a linked list, with follow-ups.

Asked in the onsite coding stage. For grading, represent the singly linked list as a list of node values. Modify the list in place and return it after reversing the nodes from left through right, inclusive.

Input and Output

reverse_sublist(head, left, right) receives head, a non-empty list of integers, and one-based positions left and right. It returns the same list object with that contiguous sublist reversed.

Constraints

  • 1 <= len(head) <= 1000
  • 1 <= left <= right <= len(head)
  • Values in head are integers
  • The reversal must be performed in place

Function Signature

def reverse_sublist(head, left, right):
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