Are you preparing for coding interviews and struggling with some of the popular Leetcode problems? One of the commonly asked questions is the "Plus One" problem. Though classified as "easy," it tests your understanding of array ma…
Ever wondered why some numbers have so many trailing zeroes? When working with large factorials like 100! or even 25! , trailing zeroes seem to appear out of nowhere! But what if I told you there’s a simple, efficient way to count those zeroes withou…
In competitive programming, one of the most common problems you'll encounter is calculating powers efficiently. A popular version of this challenge can be found on LeetCode as the "Pow(x, n)" problem. In this blog post, we'll explo…
Problem Statement You're given a sorted array of integers that contains all numbers from 1 to n except one missing number. The task is to find the missing number. For example: Input: arr = {1, 2, 3, 4, 6, 7, 8, 9, 10}, n = 10 Output: Missing Num…
In this article, we’ll discuss an efficient Java solution to check whether a number is a Happy Number . A number is called happy if, by repeatedly replacing it with the sum of the squares of its digits, it eventually equals 1 . If a number enters a lo…
