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shuffle javascript Code Snippet in 2024

arrayrandomalgorithmintermediate

Last Updated: 16 July 2024

Randomizes the order of the values of an array, returning a new array.

  • Use the Fisher-Yates algorithm to reorder the elements of the array.
const shuffle = ([...arr]) => { let m = arr.length; while (m) { const i = Math.floor(Math.random() * m--); [arr[m], arr[i]] = [arr[i], arr[m]]; } return arr; };
const foo = [1, 2, 3]; shuffle(foo); // [2, 3, 1], foo = [1, 2, 3]

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