Interactive Challenges

Test Your Algorithm Intuition

Guess the next step of an algorithm, answer quick quizzes, and climb the local leaderboard.

🎮 Guess the Next Step

We show you a current state of a sorting algorithm. Can you predict what happens next?

Algorithm
Array size

Current State

Step 0 of 0

Click "New Puzzle" to generate a challenge.

What happens next?

Pick the action that correctly describes the next step.

🧠 Quick Quizzes

Answer conceptual questions about traversals and sorting outcomes.

Current streak

0

Best streak

0

🏅 Local Leaderboard

Scores are saved in your browser only.

Top Challenge Scores

  1. Solve challenges to appear on the leaderboard.