Login

Python Exercises

C++ Exercises

Java Exercises

C Exercises

Python

HTML/CSS

JavaScript

SQL

C Programming

C++

Java

DSA

Create a new project
Start from a blank playground and build anything you want
GUIDED PROJECTS
Rock, Paper, Scissors GameBeginner
Build this classic game piece by piece by solving interactive problems
2048 GameBeginner
Create an addictive number sliding puzzle game
Student Grade CalculatorBeginner
Calculate grades based on scores and assignments
Number Guessing GameBeginner
Guess the number and learn about loops and conditions
Simple CalculatorBeginner
Build a calculator to perform basic arithmetic operations
Temperature ForecasterIntermediate
Create an app to display daily temperatures using real web API data
Students Record AnalyzerBeginner
Analyze student records and generate reports
Tic Tac Toe GameBeginner
Build a classic Tic Tac Toe game with a simple AI opponent
AI Projects with PromptsIntermediate
Create an AI project using prompts and learn how to build with AI
Grammar Checker Using AIIntermediate
Build a grammar checker that uses AI to improve writing
Hangman GameBeginner
Guess the word and learn about strings and arrays
Expense TrackerBeginner
Track your expenses and manage your budget effectively
Pokemon API ExplorerIntermediate
Access and display data from the Pokemon API
FEATURED PROJECTS
Wall of Inspiration
Browse amazing projects built by others and share your own

Java Challenges

Card Deck LinesCard Deck Lines

Pick a random Python challenge

Solve a problem from a list of 600+ unique problems.

Difficulty: All
Status: All
Tags

Back

Difficulty
  • All
  • Very Easy
  • Easy
  • Medium
  • Hard
  • Expert
Status
  • All
  • Solved
  • Attempted
  • Not Started
Tags
  • Control Flow
  • Strings
  • Lists
  • Loops
  • Maths
  • Complex Logic
  • Arrays
  • Recursion
  • Sorting
  • Sequences
  • Matrices
  • Fundamentals
  • Bit Manipulation
  • Maps
  • Stacks
Title
Difficulty
Challenge XP

Is Pass or Fail?

Very Easy
10 XP

Can Enter Club?

Very Easy
10 XP

Is the Number Divisible by Five?

Very Easy
10 XP

Dashing Numbers

Easy
30 XP

Convert to Titlecase

Easy
30 XP

Smiley Faces

Easy
30 XP

Adding List Ends

Easy
30 XP

Add Even Numbers

Easy
30 XP

Hide Credit Card

Medium
50 XP

Is a Number Pronic?

Medium
50 XP

Broken Keyboard

Medium
50 XP

Convert to Spongecase

Medium
50 XP

Is Disarium Number?

Hard
60 XP

Move Zeros to End

Hard
60 XP

ginortS Order

Hard
60 XP

Coin Change Problem

Expert
70 XP

Anagramic Square

Expert
70 XP

Area of Overlapping Rectangles

Expert
70 XP

Matrix Multiplication

Expert
70 XP

Minimum Window Substring

Expert
70 XP

Is String in SpOnGeCaSe?

Easy
30 XP

Connecting Words

Expert
70 XP

Roman Numbers To Decimal

Expert
70 XP

Sum of Every Nth Number

Easy
30 XP

Lowercase Uppercase Swap

Easy
30 XP

Repeat Vowels

Easy
30 XP

Egyptian Fraction

Expert
70 XP

Euler Zigzag Numbers

Expert
70 XP

Flip Zero for Longest Ones

Expert
70 XP

Anagramic Difference

Expert
70 XP

Expression Add Operators

Expert
70 XP

Longest Common Subsequence

Expert
70 XP

Power of Number

Easy
30 XP

Longest Palindrome Subsequence

Expert
70 XP

Remainder from Two Numbers

Very Easy
10 XP

Longest Nonrepeating Substring

Expert
70 XP

Reverse Number

Easy
30 XP

Longest Nonrepeating Subsequence

Expert
70 XP

Scrabble Points

Easy
30 XP

Maximum Sum Sub Matrix

Expert
70 XP
0

Total XP gained

0

Challenges Solved

Leaderboard

Weekly

profile

Aditya Dangwal

3100 XP
profile

Bhavana Madireddy

2420 XP
profile

Gyanendra Chaudhary

2380 XP
4
profile

M . Chaitanya Kumar

2250 XP
5
profile

Manu Tripathi

2220 XP
6
profile

Michele Riefoli

2030 XP
7
profile

CapybaraCode

1940 XP
8
profile

Francis.py

1890 XP
9
F

Florian

1810 XP
View Leaderboard