Given two stringssandt, determine if they are isomorphic.
Two strings are isomorphic if the characters inscan be replaced to gett.
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.
Note:
You may assume bothsandthave the same length.
bool isIsomorphic(char* s, char* t) {int letter1[256] = { 0 };for (int i = 0; s[i] != '\0'; i++) {if (!letter1[s[i]]) letter1[s[i]] = t[i];else if (letter1[s[i]] != t[i]) return false;}int letter2[256] = { 0 };for (int i = 0; t[i] != '\0'; i++) {if (!letter2[t[i]]) letter2[t[i]] = s[i];else if (letter2[t[i]] != s[i]) return false;}return true;}
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