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Python Coding
Challenges

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925 challenges 556 easy 323 medium 46 hard

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Stacks & Queues medium

Daily Temperatures

Given a list of daily temperatures, return for each day how many days until a warmer temperature appears.

stacks arrays monotonic-stack

Stacks & Queues medium

Buildings with ocean view

Given building heights, return sorted indices of buildings that have a clear view of the ocean to their right.

stack monotonic-stack arrays

Stacks & Queues medium

Sum of Subarray Minimums

Given an integer array, sum the minimum of all contiguous subarrays modulo 10^9+7.

stack array monotonic-stack

Stacks & Queues medium

Asteroid Collision

Simulate asteroid collisions with a stack and return the remaining asteroids in original order.

stack simulation arrays

Showing 1–4 of 4 challenges · medium · 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.