Python coding challenges: "xor"

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Bit Manipulation medium

Maximum XOR Pair

Implement max_xor_pair(nums) that returns the maximum XOR value obtainable by pairing any two numbers in the given list.

bit-manipulation xor array

+25 pts 30m

Binary Search medium

Single Element in Sorted Array

Given a sorted array where every element appears exactly twice except one which appears once, return the single element.

binary-search array xor

+20 pts 25m

Showing 1–2 of 2 challenges · medium

Guide: free Python coding challenges

Practice Python by solving problems

PythonSkillset challenges are hands-on coding exercises from beginner to advanced. Open a challenge, read the problem, write Python in the split-pane editor, and run tests with Pyodide — no install required.

How to use the arena

Pick a category — basics, algorithms, strings, and more
Open a challenge, read the statement, and edit the starter code
Run tests, fix failures, then try a related quiz or tutorial lesson

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.

Python Coding Challenges