Lists & Arrays
easy
Remove duplicates (sorted)
Return a sorted list with duplicates removed.
arrays
two-pointer
Lists & Arrays
easy
Merge two sorted arrays
Merge two sorted arrays into one sorted array.
arrays
merge
two-pointer
Lists & Arrays
medium
Merge intervals
Merge all overlapping intervals and return a sorted result.
intervals
sort
Showing 3 challenges · Lists & Arrays
Lists & Arrays — Python coding challenges
What you will find here
This page lists lists & arrays 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.