Isomorphic Strings

Total Accepted: 38651 Total Submissions: 141668 Difficulty: Easy

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.

For example,
Given "egg", "add", return true.

Given "foo", "bar", return false.

Given "paper", "title", return true.

 (E) Word Pattern

 

class Solution {
public:
    bool isIsomorphic(string s, string t) {
        int arry[256]={0};
        int arry2[256]={0};
        for(int i=0;i<s.size();i++){
            if(arry[s[i]]==0){
                if(arry2[t[i]]){
                    return false;
                }
                arry[s[i]] = t[i];
                arry2[t[i]] = 1;
            }else if(arry[s[i]]!=0){
                if(arry[s[i]] != t[i]){
                    return false;
                }
            }
        }
        return true;
    }
};