冒泡和递归

 1 li=[34,12,33,1]
 2 print(li)
 3 for i in range(0,len(li)):
 4 #range开始0 结束len(i)-1
 5    for j in range(1,len(li)-i):
 6        if li[j] < li[j-1] :#当前位置比前一个位置则互换位置
 7            temp = li[j]
 8            li[j] = li [j-1]
 9            li[j-1] =temp
10 print(li)

 1 count = 1 #计数器
 2 def f(a1,a2):
 3     global count
 4     count +=1
 5     print(a1)#打印波菲特数
 6     if count > 10:
 7         return
 8     a3 = a1 + a2
 9     f(a2,a3)
10 f(0,1)

1 def f(depth,a1, a2):
2     if depth ==10:
3         return a1
4     a3 = a1 + a2
5     r=f(depth+1,a2, a3)
6     return r
7 ret=f(1,0,1)
8 print(ret)