mirror of
https://iceshrimp.dev/crimekillz/iceshrimp-161sh.git
synced 2024-11-25 05:29:07 +01:00
20 lines
491 B
TypeScript
20 lines
491 B
TypeScript
/**
|
|
* 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;
|
|
}
|