Code Golf · #10 · 2026-04-14
Flatten a nested array
Difficulty 1/3 · JavaScript
How to play
Write a JavaScript function body that passes all test cases using the fewest characters. Run against examples first, then submit for the full test suite. Eagle < Birdie < Par.
Given a nested array, return a flat array with all values.
Examples
f([[1,2],[3,[4,5]]]) → 1,2,3,4,5
f([[1],[2],[3]]) → 1,2,3
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Your code (function body — receives input)
function(input) { 0 chars
}
Write the shortest JavaScript function body that passes all tests · Back to hub