js案例之求最大值，反转数组，冒泡排序

 //求最大值
function getMax() {
            var max = arguments[0];
            for (var i = 1; i <
                arguments.length; i++) {
                if (arguments[i] > max) {
                    max = arguments[i];
                }
            }
            return max;
        }
        console.log(getMax(1, 2, 3));
        console.log(getMax(1, 2, 3, 4, 5));
//反转数组

        function reserve() {
            var newarr = [];
            for (var i = arguments.length - 1; i >= 0; i--) {
                newarr[newarr.length] = arguments[i];

            }
            return newarr;
        }
        var arr = reserve(1, 3, 4);
        console.log(arr);

        // 冒泡排序
        function bubble(arr) {
            for (var i = 0; i < arr.length; i++) {
                for (var j = 0; j < arr.length - i - 1; j++) {
                    if (arr[j] > arr[j + 1]) {
                        var temp = arr[j];
                        arr[j] = arr[j + 1];
                        arr[j + 1] = temp;
                    }
                }
            }
            return arr;
        }
        var arr1 = bubble([3, 2, 5, 6, 1]);
        console.log(arr1);