Introduction The Reverse Integer problem is a classic LeetCode challenge, categorized as an Easy level problem, but it’s a great exercise in understanding integer manipulation and overflow handling. This problem is frequently asked in coding interviews, making it a must-practice for aspiring developers. In this blog post, we’ll break down the problem, explore different solution … Read more
The Sliding Window technique is a powerful and efficient method used to solve problems involving arrays, strings, and sequences. Instead of using brute force methods that may result in time complexity issues, sliding window optimizes the process by reducing redundant calculations, making it a popular approach among competitive programmers. In this guide, we’ll break down … Read more
Problem-solving patterns, also known as problem-solving techniques or strategies, are systematic approaches that can help you tackle coding and algorithmic challenges more effectively. Here are some problem-solving patterns commonly used in coding: (1). Two Pointers Use two pointers that traverse the data structure from different directions to solve problems efficiently. This is common in problems … Read more
Problem Description: Given an integer array nums, move all 0‘s to the end of it while maintaining the relative order of the non-zero elements. Example 1: Example 2: Constraints: Move Zeroes – LeetCode Solution(s): To move all zeros to the end of an integer array while maintaining the relative order of the non-zero elements, you can follow … Read more
Problem Description: Given n non-negative integers representing an elevation map where the width of each bar is 1, compute how much water it can trap after raining. Example 1 : Example 2: Constraints: Problem Link :Trapping Rain Water – LeetCode Solution(s): Approach 1: Brute Force Solution Java Code: Explanation: 1.Initialization: 2.Main Loop: 3.Finding Maximum Height to the Left: … Read more
Merging sorted arrays is a fundamental problem in computer science. The task is to combine two sorted arrays into one sorted array, maintaining the order. The Merge Sorted Array presents this classic problem with a twist — you are asked to merge the arrays in-place. This means that instead of using extra space, you must … Read more
Problem Description: Given an integer array nums, rotate the array to the right by k steps, where k is non-negative. Example 1: Example 2: Constraints: Problem Link : Rotate Array – LeetCode Solution(s): Approach 1: Using temporary array Java Code: Complexity: Approach 2 : In-Place Java Code : Complexity: