Max Stack Design
Implement a MaxStack class with push, pop, top, and get_max operations.
Decode String Stack
Decode a compressed string with repeated substrings like '3[a2[c]]' to 'accaccacc' using a stack-based approach.
Buildings with ocean view
Given building heights, return sorted indices of buildings that have a clear view of the ocean to their right.
Asteroid Collision
Simulate asteroid collisions with a stack and return the remaining asteroids in original order.
Decode Nested String
Implement a function that decodes a string with nested encoding patterns.
Showing 5 challenges · Stacks & Queues
Stacks & Queues — Python coding challenges
What you will find here
This page lists stacks & queues challenges — real Python problems you solve in the browser IDE with instant test feedback. Each challenge includes a clear brief, starter code, and automated checks.
Challenges vs tutorials and quizzes
Challenges test what you can build under constraints. For guided teaching, use our Python tutorials. For quick checks, try quizzes or copy snippets from code samples.