Master DSA Topics - April, 2026

Practice problems across 75+ categories

All Coding Problems

Practice coding problems across all companies and topics 3600 problems | 879 Easy | 1856 Medium | 842 Hard

# Problem Difficulty Topics
3031 Queens That Can Attack the King Medium
ArrayMatrixSimulation
3032 Queries on a Permutation With Key Medium
ArrayBinary Indexed TreeSimulation
3033 Queries on Number of Points Inside a Circle Medium
ArrayMathGeometry
3034 Queries Quality and Percentage Easy
Database
3035 Query Batching Hard
JavaScript
3036 Query Kth Smallest Trimmed Number Medium
ArrayStringDivide and Conquer
3037 Queue Reconstruction by Height Medium
ArrayBinary Indexed TreeSegment Tree
3038 Queue Using Array Easy
Data StructuresQueueArray
3039 Quick Sort with Pivot Strategies Medium
Sorting & SearchingArrayPartitioning
3040 Rabbits in Forest Medium
ArrayHash TableMath
3041 Rabin-Karp String Search Medium
HashingStringRolling Hash
3042 Race Car Hard
Dynamic Programming
3043 Raft Consensus Simulator Hard
Distributed SystemsState MachineProtocol
3044 Random Flip Matrix Medium
Hash TableMathReservoir Sampling
3045 Random Pick Index Medium
Hash TableMathReservoir Sampling
Showing 3031-3045 of 3911
1 ... 201 202 203 204 205 ... 261

Tutorials Library

Master any technology with our largest free online Library. Browse through 500+ tutorials across 10+ categories.

Python

Python Tutorial

Java

Java Tutorial

JavaScript

JavaScript

C++

C++ Tutorial

C#

C# Tutorial

Go

Go Tutorial

Rust

Rust Tutorial

TypeScript

TypeScript

Swift

Swift Tutorial

Kotlin

Kotlin Tutorial

Ruby

Ruby Tutorial

PHP

PHP Tutorial

C

C Tutorial

Scala

Scala Tutorial

Perl

Perl Tutorial

R

R Tutorial

Dart

Dart Tutorial

Lua

Lua Tutorial

MATLAB

MATLAB

Haskell

Haskell

Developer Toolbox

Powerful online tools to boost your productivity

public class MyFirstJavaProgram { Edit & Run

   /* This is my first java program.
    * This will print 'Hello, World!' as the output
    */

   public static void main(String []args) {
      System.out.println("Hello, World!"); // prints
   }
}

Start Coding in Seconds

Coding Ground For Developers

Code, Edit, Run and Share

Ignite your coding potential on Coding Ground - an immersive online platform for hands-on learning, collaboration, and skill development.