# [LeetCode] 205. Isomorphic Strings 同构字符串

Given two strings s and t, determine if they are isomorphic.

Two strings are isomorphic if the characters in s can be replaced to get t.

All occurrences of a character must be replaced with another character while preserving the order of characters. No two characters may map to the same character but a character may map to itself.

Example 1:

Input: s = "egg", t = "add"
Output: true


Example 2:

Input: s = "foo", t = "bar"
Output: false

Example 3:

Input: s = "paper", t = "title"
Output: true

Note:
You may assume both and have the same length.

class Solution {
public:
bool isIsomorphic(string s, string t) {
int m1[256] = {0}, m2[256] = {0}, n = s.size();
for (int i = 0; i < n; ++i) {
if (m1[s[i]] != m2[t[i]]) return false;
m1[s[i]] = i + 1;
m2[t[i]] = i + 1;
}
return true;
}
};

Github 同步地址：

https://github.com/grandyang/leetcode/issues/205

Word Pattern

https://leetcode.com/problems/isomorphic-strings/

https://leetcode.com/problems/isomorphic-strings/discuss/57796/My-6-lines-solution

https://leetcode.com/problems/isomorphic-strings/discuss/57810/Short-Java-solution-without-maps

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posted @ 2015-04-29 13:49  Grandyang  阅读(19289)  评论(14编辑  收藏  举报