30-seconds-of-code/snippets/collatz.md

collatz

Applies the Collatz algorithm.

If n is even, return n/2. Otherwise, return 3n+1.

const collatz = n => (n % 2 == 0) ? (n / 2) : (3 * n + 1);

collatz(8) -> 4
collatz(5) -> 16