完成第三题

question3.py

@@ -0,0 +1,8 @@
+def connect_two_str(s1, s2):
+    len1 = len(s1)
+    length = min(len1, len(s2))
+    k = max(range(0, length + 1), key=lambda i: i if s1[len1-i:]==s2[:i] else False)
+    return s1 + s2[k:]
+
+if __name__ == "__main__":
+    print(connect_two_str('1234', '234567'))