# # longest common subsequence # @param s1 string字符串 the string # @param s2 string字符串 the string # @return string字符串 # class Solution: def LCS(self , s1 , s2 ): # write code here m = len(s1) n = len(s2) dp = [[0] * (n+1) for _ in range(m+1)] for i in rang...