python - 将两个字符串与一个公共(public)子字符串连接起来？

Question

假设我有字符串，

string1 = 'Hello how are you'
string2 = 'are you doing now?'

结果应该是这样的

Hello how are you doing now?

我在考虑使用 re 和字符串搜索的不同方式。(Longest common substring problem)

但是在 python 中是否有任何简单的方法(或库)可以做到这一点？

为了清楚起见，我将再添加一组测试字符串!

string1 = 'This is a nice ACADEMY'
string2 = 'DEMY you know!'

结果会是!

'This is a nice ACADEMY you know!'

Answer 1

应该这样做:

string1 = 'Hello how are you'
string2 = 'are you doing now?'
i = 0
while not string2.startswith(string1[i:]):
    i += 1

sFinal = string1[:i] + string2

输出:

>>> sFinal
'Hello how are you doing now?'

或者，让它成为一个函数，这样你就可以在不重写的情况下再次使用它:

def merge(s1, s2):
    i = 0
    while not s2.startswith(s1[i:]):
        i += 1
    return s1[:i] + s2

输出:

>>> merge('Hello how are you', 'are you doing now?')
'Hello how are you doing now?'
>>> merge("This is a nice ACADEMY", "DEMY you know!")
'This is a nice ACADEMY you know!'