递归函数与二分查找算法

修改最大深度：
import sys
print(sys.setrecursionlimit(100000))

# 递归示例－求年龄
def age(n):
    if n == 1:
        return 40
    else:
        return age(n-1)+2

print(age(4))

l = [2,3,5,10,15,16,18,22,26,30,32,35,41,42,43,55,56,66,67,69,72,76,82,83,88]

def func(l,aim):
    mid = (len(l)-1)//2
    if l:
        if aim > l[mid]:
            func(l[mid+1:],aim)
        elif aim < l[mid]:
            func(l[:mid],aim)
        elif aim == l[mid]:
            print("bingo",mid)
    else:
        print(‘找不到‘)
func(l,66)
func(l,6)

二分法基础版

def search(num,l,start=None,end=None):
    start = start if start else 0
    end = end if end is None else len(l) - 1
    mid = (end - start)//2 + start
    if start > end:
        return None
    elif l[mid] > num :
        return search(num,l,start,mid-1)
    elif l[mid] < num:
        return search(num,l,mid+1,end)
    elif l[mid] == num:
        return mid

二分算法终极版