Problem: Reverse Nodes in k-Group
Understand how to reverse nodes of a singly linked list in groups of k using recursion and iterative reversal techniques. Learn to preserve the order of leftover nodes and manage connections efficiently. This lesson guides you through implementing this in Python with attention to time and space complexity.
We'll cover the following...
Statement
Given the head of a singly linked list and an integer k, reverse the nodes of the list in groups of k consecutive nodes at a time, and return the modified list.
k is a positive integer that does not exceed the length of the linked list. If the total number of nodes is not evenly divisible by k, the remaining nodes at the end of the list should be left in their original order.
You may not modify the values stored in the nodes. Only the node connections themselves may be rearranged.
Note: Can you solve the problem using
extra memory space?
Constraints:
The number of nodes in the list is
n....