查找表_leetcode205

# 解题思路：字典建立隐射关系,一一对应  20190302 找工作期间


class Solution(object):
    def isIsomorphic(self, s, t):
 """
 :type s: str
 :type t: str
 :rtype: bool
 """


 # 使用字典，pattern当key,str当value，形成配对
 dic = {}
 
 if len(s) != len(t) or len(set(s)) != len(set(t)):
 return False

 for i, val in enumerate(s):
 if val not in dic:
 dic[val] = t[i]
 elif dic[val] != t[i]:
 return False
 return True