Balanced brackets in string
Check if a string of brackets is properly balanced using a stack-based approach.
Next Greater Element
Return a list where each position holds the next greater element to the right, or -1 if none exists.
Showing 2 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.