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925 challenges 556 easy 323 medium 46 hard

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Recursion & Backtracking medium

Subsets

Return all subsets (the power set) of a list of distinct integers.

recursion backtracking subsets

Recursion & Backtracking medium

Subsets II

Given a collection of integers that might contain duplicates, return all possible unique subsets.

subsets backtracking deduplication

Recursion & Backtracking hard

Partition to k subsets

Determine if an array of positive integers can be partitioned into k subsets of equal sum using backtracking.

backtracking recursion partition

Recursion & Backtracking medium

Partition Equal Subset Sum (Backtracking)

Write a function that uses backtracking to decide if a list of positive integers can be partitioned into two subsets with equal sum.

backtracking subset-sum partition

Recursion & Backtracking medium

Letter Tile Possibilities

Given a string of letter tiles, count the number of distinct non-empty sequences that can be formed using any non-empty subset in any order.

backtracking counting strings

Recursion & Backtracking easy

Power set from set

Write a function to return the power set of a given list of distinct elements.

recursion subsets combinations

Showing 1–6 of 6 challenges · Recursion & Backtracking

Recursion & Backtracking — Python coding challenges

What you will find here

This page lists recursion & backtracking 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.