DSA

20.5K+ posts

Last Updated: 01 July 2026

Given a string of lowercase alphabets and a number k, the task is to find the minimum value of the string after removal of ‘k’ characters. The value of a string is defined...read more

DSA

Maximize Contest Score

Last Updated: 29 June 2026

Geekland is conducting a programming contest that lasts for n minutes.The contest contains en number of easy problems and hn number of hard problems.Geek will be awarded e...read more

Wine Buying and Selling

Last Updated: 01 July 2026

Given an integer array arr[] representing houses built along a straight line, each value arr[i] represents a certain number of wine bottles that a wants to buy or sell.If ...read more

DSA

prefix

two-pointer-algorithm

DSA

Successful Penalty Conversions

Last Updated: 30 June 2026

A football match event log is represented by a string s consisting of characters '0', '1', and '2'.'2' represents a penalty awarded.'1' represents a successful penalty con...read more

DSA

Sum of Consecutive Integers

Last Updated: 29 June 2026

Given two positive integers a and b, determine whether a can be expressed as the sum of b consecutive positive integers.Examples:Input: a = 5, b = 2Output: trueExplanation...read more

DSA

Minimum Absolute Array Sum with Sign Change

Last Updated: 29 June 2026

Given an array arr[], you may flip the sign of any element (i.e., change a positive number to negative or vice versa) any number of times. Find the minimum possible absolu...read more

DSA

Get the Diamond

Last Updated: 29 June 2026

Given two integers n and k, a diamond is located at the nth step. A person can jump either 1 step or k steps at a time. Find the minimum number of jumps required to reach ...read more

DSA

Reading books

Last Updated: 01 July 2026

Given two arrays arr1[] and arr2[], and an integer k, where arr1[i] represents the time required to read a book of kind i once and arr2[i] represents the points earned aft...read more

DSA

Geek's Art Collection

Last Updated: 29 June 2026

Geek owns n paintings, each with an estimated value. He wants to donate some of these paintings to a museum while keeping the rest in his private collection. To make the d...read more

DSA

Sorting Two Arrays with Custom Comparator

Last Updated: 30 June 2026

Sorting with a Custom Comparator is a sorting technique used when elements need to be ordered based on user-defined criteria.It is commonly used for sorting records contai...read more

DSA

Rearrange the Array

Last Updated: 25 June 2026

Consider an array a[] = [1, 2, 3, ..., n] and a permutation b[] of size n containing all integers from 1 to n exactly once.The array b[] defines a rearrangement operation....read more

DSA

Special String Comparison

Last Updated: 30 June 2026

The priority order of characters in this problem is slightly different from the usual alphabet: whenever 'n' is immediately followed by 'g', the pair "ng" is treated as a ...read more

DSA

Reach the Target Number

Last Updated: 21 June 2026

Given an array arr[] of exactly 4 integers and an integer target, determine whether target can be obtained by combining all 4 numbers using the operators +, -, *, and /, g...read more

DSA

Largest Interval that is Covered by Array Elements

Last Updated: 21 June 2026

Given an array arr[] of integers, find out the biggest interval that has all its members in the given array. If multiple interval exist of largest size then return the int...read more

DSA

Two Non-Overlapping subarrays With Target Sum

Last Updated: 20 June 2026

Given an array arr[] of size n and an integer k, find the minimum sum of lengths of two non-overlapping subarrays such that the sum of elements in each subarray is exactly...read more

DSA

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