洗牌算法
<script>
let arr = [1, 2, 3, 4, 5, 6, 7, 8, 9];
let cloneArray;
function getSort(arr) {
cloneArray = arr.concat();
for (let i = 0; i < cloneArray.length; i++) {
let index = Math.floor(Math.random() * cloneArray.length);
let temp = cloneArray[index];
cloneArray[index] = cloneArray[i];
cloneArray[i] = temp;
}
return cloneArray;
}
console.log(getSort(arr));
</script>