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JavaScript
Shuffle an array
The Fisher-Yates shuffle swaps each item with a random earlier one.
Example
javascript
function shuffle(a) { a = [...a]; for (let i = a.length - 1; i > 0; i--) { const j = Math.floor(Math.random() * (i + 1)); [a[i], a[j]] = [a[j], a[i]]; } return a; } const s = shuffle([1, 2, 3, 4, 5]); console.log(s.length, s.slice().sort().join(""));
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