数组从小到大排序,从大到小排序

JS:
// 数组从小到大排序
  var a = [9, 2, 33, 66, 55, 56, 34, 1, 91, 88];
    for (var i = 0; i < a.length; i++) {
        for (var j = i + 1; j < a.length; j++) {
            if (a[i] > a[j]) {
                let tem = a[i]
                a[i] = a[j];
                a[j] = tem;
            }
        }
    }
    console.log(a) // [1, 2, 9, 33, 34, 55, 56, 66, 88, 91]

    // 数组从大到小排序 
    var array = [9, 2, 33, 66, 55, 56, 34, 1, 91, 88]
    for (var i = 0; i < array.length; i++) {
        for (var j = i + 1; j < array.length; j++) {
            if (array[i] < array[j]) {
                let d = array[i];
                array[i] = array[j];
                array[j] = d;
            }
        }
    }
    console.log(array) // [91, 88, 66, 56, 55, 34, 33, 9, 2, 1]