008.冒泡法排序

lst = [2,5,3,7,1,6,4]
for i in range(len(lst)):
    for j in range(len(lst)-1-i):
        if lst[j]>lst[j+1]:
            temp = lst[j+1]
            lst[j+1] = lst[j]
            lst[j] = temp
print(lst)