var arr = [1, 1, 1, 1442, 2, 42, 144, 1, 411, 41, 1, 134, 3, 3434, 42, 333, 34, 23, 3, 14, 14, 14, 3, 43, 3, 43, 1, 441, 1]  for (var i = 0; i < arr.length; i++) {    for (var j = 0; j < arr.length - 1 - i; j++) {      if (arr[j] < arr[j + 1]) {        var temp = arr[j];        arr[j] = arr[j + 1];        arr[j + 1] = temp;      }    }  }

　　数组降序排列，其他的写法都差不多，自己按实际情况修改