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/**
* 配列をシャッフル (破壊的)
*/
export function shuffle<T extends any[]>(array: T): T {
let currentIndex = array.length, randomIndex;
// While there remain elements to shuffle.
while (currentIndex !== 0) {
// Pick a remaining element.
randomIndex = Math.floor(Math.random() * currentIndex);
currentIndex--;
// And swap it with the current element.
[array[currentIndex], array[randomIndex]] = [
array[randomIndex], array[currentIndex]];
}
return array;
}
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