用python写个函数,实现在字符串A中超值字符串B的位置,类似find的功能,但不要用find。
比如:let life be beautiful like summer flowers. 中找出like所在的位置,即在23位、
就是这个思路,但是怎么写呢,能帮忙写个示范么
追答import os,sys
def strstr(s,subs):
lens=len(s)
lensubs=len(subs)
idx=-1
bFound=False
if lensubs>lens:
return bFound,idx
for i in range(lens-lensubs):
bFound=True
for j in range(lensubs):
if s[i+j]!=subs[j]:
bFound=False
break
if bFound==True:
idx=i
return True,idx
return False,idx
print strstr("hello","ll")
print strstr("hello","te")