Master DSA Topics - January, 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
3061 Self Crossing Hard
ArrayMathGeometry
3062 Self Dividing Numbers Easy
Math
3063 Sell Diminishing-Valued Colored Balls Medium
ArrayMathBinary Search
3064 Sellers With No Sales Easy
Database
3065 Selling Pieces of Wood Hard
ArrayDynamic ProgrammingMemoization
3066 Semi-Ordered Permutation Easy
ArraySimulation
3067 Sender With Largest Word Count Medium
ArrayHash TableString
3068 Sentence Screen Fitting Medium
ArrayStringDynamic Programming
3069 Sentence Similarity Easy
ArrayHash TableString
3070 Sentence Similarity II Medium
ArrayHash TableString
3071 Sentence Similarity III Medium
ArrayTwo PointersString
3072 Separate Black and White Balls Medium
Two PointersStringGreedy
3073 Separate Squares I Medium
ArrayBinary Search
3074 Separate Squares II Hard
ArrayBinary SearchSegment Tree
3075 Separate the Digits in an Array Easy
ArraySimulation
Showing 3061-3075 of 3600
1 ... 203 204 205 206 207 ... 240

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.