def maopaopaixu(num):
    length=len(num)
    for i in range(length-1):
        for j in range(length-i-1):
            if num[j]>num[j+1]:
                num[j],num[j+1]=num[j+1],num[j]
    print(num)
num=[1,3,3,5,8,9,9,7,2,6]
maopaopaixu(num)