Collatz Conjecture

Ringkasan Tantangan

Calculate the number of steps to reach 1 using the Collatz conjecture.

Visit the collatz-conjecture exercise on Exercism to read the full instructions and download the exercise files.

Community Solutions

Lihat Solusi Komunitas

The following are the top 3 community solutions by stars:

Solution 1 by @YousufGamalEldeen (⭐ 0) — View on Exercism
Solution 2 by @caseysj (⭐ 0) — View on Exercism
Solution 3 by @CathZChen (⭐ 0) — View on Exercism

Source: Exercism php/collatz-conjecture

💡 Lihat Solusi

declare(strict_types=1);

function steps(int $number): int
{
    if ($number <= 0) throw new InvalidArgumentException("Only positive numbers are allowed");

    $steps = 0;
    while ($number !== 1){
        $number = $number % 2 === 0 ? $number / 2 : ($number * 3) + 1;
        $steps++;