Unique Strings with Odd and Even Swapping Allowed
Introduction: In string manipulation, discovering unique strings amidst a sea of possibilities can be both challenging and rewarding. In this tutorial, we embark on a journey to unravel the secrets…
Beautiful Days at the Movies | Hackerrank Solutions
Lily likes to play games with integers. She has created a new game where she determines the difference between a number and its reverse. For instance, given the number 12,…
Letter Combinations of a phone number
Given a string containing digits from 2-9 inclusive, return all possible letter combinations that the number could represent. Return the answer in any order. A mapping of digits to letters…
3 Sum Closest | LeetCode
Given an integer array nums of length n and an integer target, find three integers in nums such that the sum is closest to target. Return the sum of the…
Finding the Top K Most Frequent Elements in an Array
Finding the top ( k ) most frequent elements in an array is a common question in coding interviews and a useful task in various applications like data analysis and…
Finding the Top K Largest Elements in an Array
In many coding interviews and real-world applications, finding the top ( k ) largest elements in an array is a common problem. This tutorial will guide you through three popular…
Counting Odd and Even Occurrences in an Array
Introduction: In programming, it’s common to encounter scenarios where you need to count the number of elements occurring an odd number of times and the number of elements occurring an…
How to Check if a Number is Prime in Python
Introduction:Prime numbers are natural numbers greater than 1 that have no positive divisors other than 1 and themselves. Determining whether a given number is prime or not is a common…
Deleting Nodes with Greater Values on the Right Side in a Linked List
Introduction:In programming, efficiently managing linked lists is a crucial skill. Deleting nodes with greater values on the right side is a common problem encountered while working with linked lists. In…
Finding Maximum Difference Type in an Array
Introduction:Discovering the maximum difference between elements in a Python array is a crucial programming task, often demanding efficient algorithms for optimal results. In this comprehensive tutorial, we’ll delve into Python…
Sorting Unique Integers Without Built-in Functions in Python
Introduction:Sorting a list of unique integers is a common task in programming, often requiring efficient algorithms to achieve the desired result. In this tutorial, we’ll explore how to implement a…
Character Frequency Counting in Strings
Introduction: Character frequency counting is a common task in string manipulation, often encountered in various programming scenarios. In this tutorial, we’ll explore an efficient approach to calculate the frequency of…
String Operations: Efficiently Reverse Substrings
Introduction: String manipulation is a fundamental aspect of programming, and understanding efficient techniques for performing string operations is essential. In this tutorial, we’ll explore an efficient approach to reverse substrings…
Square Root Integral in Python
Given a number N, find its square root. You need to find and print only the integral part of square root of N. For eg. if number given is 18,…
Word Patterns | Interview Question at Mastercard
Introduction: In the world of string manipulation, unraveling patterns and matching sequences play a pivotal role in various applications. In this tutorial, we’ll embark on a journey to decode word…
Minimum Steps to Reduce a Number to 1 Using Dynamic Programming
Problem Statement: Given a positive integer ‘N’, our objective is to compute and return the minimum number of steps needed to reduce ‘N’ to 1. We have three permissible operations:…
Find Kth Number Program in Python
Introduction: The task at hand is to implement a Python function that finds the kth lexicographically smallest integer in the range from 1 to n. To achieve this, we will…
Utopian Tree | Hackerrank Solution
The Utopian Tree goes through 2 cycles of growth every year. Each spring, it doubles in height. Each summer, its height increases by 1 meter. A Utopian Tree sapling with…
Designer PDF Viewer | Hackerrank
When a contiguous block of text is selected in a PDF viewer, the selection is highlighted with a blue rectangle. In this PDF viewer, each word is highlighted independently. For…
Hackerrank | Longest Subarray with Absolute Difference Constraint
Problem Overview Given an array of integers, our task is to find the longest subarray such that the absolute difference between any two elements is less than or equal to…