【python3】冒泡排序

#从大到小排列

num = [12, 35, 99, 18, 76]
len_num=len(num)-1

for i in list(range(len_num)):#控制循环的次数
    for j in list(range(len_num-i)):
        if num[j]<num[j+1]:
            num[j],num[j+1]=num[j+1],num[j]

print(num)