Sponsored Reserved space — layout preview until AdSense is connected

Practice Arena

Python Coding
Challenges

Write real Python in the browser. Instant feedback. From beginner to expert.

56 challenges 25 easy 23 medium 8 hard

All Easy Medium Hard

Sponsored Reserved space — layout preview until AdSense is connected

All Python Basics Strings & Text Lists & Arrays Dicts & Sets Functions & Closures OOP & Classes Data Structures & Algorithms Advanced Python

Python Basics medium

Fibonacci(n)

Return the nth Fibonacci number efficiently.

recursion dp memoization

Lists & Arrays medium

Maximum subarray (Kadane)

Find the contiguous subarray with the largest sum.

dp arrays kadane

Data Structures & Algorithms medium

Coin change (DP)

Find the minimum number of coins to make exactly the target amount.

Showing 3 challenges · medium