长度为N的数组记录中1-N个数字
将数组中的数从小到大排序
不能够间接赋值
let arr = [1, 6, 3, 2, 9, 10, 11, 4, 7, 5, 12, 8];

let i = 0, temp = 0;while(temp++ < arr.length) {  if (arr[i] === i + 1) {    i ++  } else {    const temp = arr[arr[i] - 1];    arr[arr[i] - 1] = arr[i];    arr[i] = temp;  }}