Add 1 to a Linked List Number
Medium Problems of Singly Linked List DSA practice problem on Onlearn.
Difficulty: medium.
Topics: How can you add 1 to a number represented by a linked list?, Linked List, Node, Pointer, Algorithm, Time Complexity, Space Complexity, iteration, number representation, space complexity, mathematical operations, time complexity analysis, recursion, linked list, Linked List Addition.
Problem Statement: You are given the head of a singly linked list representing a non negative integer. The digits are stored in reverse order, such that the least significant digit is at the head of the list. Each node in the linked list contains a single digit. Add one to the number represented by the linked list. Return the head of the modified linked list. Example: Input: head = [1,2,3] (Represents the number 321) Output: [1,2,4] (Represents the number 322) Input: head = [9,9,9] (Represents the number 999) Output: [1,0,0,0] (Represents the number 1000) Constraints: The number represented by the linked list is non negative. The linked list will not contain any leading zeros (except for the number 0 itself). Each node's value is between 0 and 9.