Is Strings Isomorphic - Solution

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SOLUTION

bool isIsomorphic(string s, string t){

int hash[256] = {0}, is_mapped[256] = {0};

for(int i =0 ; i < s.size() ; i++){

if (hash[s[i]] == 0 && is_mapped[t[i]] == 0)

{

hash[s[i]] = t[i];

is_mapped[t[i]] = 1;

}

}

for (int i = 0; i < t.size(); i++)

{

if (hash[s[i]] != t[i])

{

return false;

}

}

return true;

}