This one is a math problem. And I enjoyed every bit of cracking the equation. The problem was, “Given an integer n, count the total number of digit 1 appearing in all non-negative integers less than or equal to n.” At first I thought of doing recursi...
Problem Statement Given k sorted linked lists, each containing sorted nodes, the task is to merge these lists into a single sorted linked list. For instance, if you have the following lists: List 1: 1 → 4 → 5 List 2: 1 → 3 → 4 List 3: 2 → 6 The ...
Introduction Today, I took on a challenging problem from LeetCode: First Missing Positive. This hard-level question tests your algorithmic skills, requiring an O(n) time complexity solution with O(1) auxiliary space. The goal is to find the smallest ...
