数组冒泡排序

var arr = [435,6,234,23,434,6545,623,123];

for(var i = 0 ; i < arr.length - 1; 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;
        }
    }
}

console.log(arr);