题解 | #查找两个字符串a,b中的最长公共子串#
查找两个字符串a,b中的最长公共子串
http://www.nowcoder.com/practice/181a1a71c7574266ad07f9739f791506
循环套循环
s1 = input()
s2 = input()
if len(s2)<len(s1):
a=s1
s1=s2
s2=a
tes=''
for i in range(len(s1)):
if s1[i] in s2:
for j in range(i + 1, len(s1)+1):
if s1[i:j] in s2 and len(s1[i:j])>len(tes):
tes=s1[i:j]
print(tes)