Linked List Manipulation Techniques for Common Interview Problems
Swapping Adjacent Nodes in Pairs
To exchange every two consecutive nodes in a singly linked list:
Introduce a dummy node to simplify edge cases.
Use a pointer to traverse and perform swaps iterative.
Ensure loop termination checks prevent null dereferencing.
class Node:
def __init__(self, value=0, nxt=None):
self.value = value
...
Posted on Sun, 19 Jul 2026 16:51:10 +0000 by lostprophetpunk