← Questions

Reservoir sampling and a check that it is uniform

0
PerplexityCodingLast asked Nov 2025

Pick k items uniformly at random from a stream of unknown length in one pass and O(k) memory. Then write a simulation that tests whether your picks are close to uniform, and explain how you would judge the result.

Write and test your solution herePython in your browser, the question's tests level by level, every submission kept for you.Sign in to start coding