C语言 | Leetcode C语言题解之第205题同构字符串

题目：

题解：

struct HashTable {char key;char val;UT_hash_handle hh;
};bool isIsomorphic(char* s, char* t) {struct HashTable* s2t = NULL;struct HashTable* t2s = NULL;int len = strlen(s);for (int i = 0; i < len; ++i) {char x = s[i], y = t[i];struct HashTable *tmp1, *tmp2;HASH_FIND(hh, s2t, &x, sizeof(char), tmp1);HASH_FIND(hh, t2s, &y, sizeof(char), tmp2);if (tmp1 != NULL) {if (tmp1->val != y) {return false;}} else {tmp1 = malloc(sizeof(struct HashTable));tmp1->key = x;tmp1->val = y;HASH_ADD(hh, s2t, key, sizeof(char), tmp1);}if (tmp2 != NULL) {if (tmp2->val != x) {return false;}} else {tmp2 = malloc(sizeof(struct HashTable));tmp2->key = y;tmp2->val = x;HASH_ADD(hh, t2s, key, sizeof(char), tmp2);}}return true;
}