Problem 1077. Count up then down

Create a function that produces counting up from 0 up to n then down to 0

n=2 --> 0 1 2 1 0

n=3 --> 0 1 2 3 2 1 0

Solve

Solution Stats

49.59% Correct | 50.41% Incorrect
Last Solution submitted on Nov 21, 2025

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