题目：

题解：

struct hashTable {int key;UT_hash_handle hh;
};bool containsDuplicate(int* nums, int numsSize) {struct hashTable* set = NULL;for (int i = 0; i < numsSize; i++) {struct hashTable* tmp;HASH_FIND_INT(set, nums + i, tmp);if (tmp == NULL) {tmp = malloc(sizeof(struct hashTable));tmp->key = nums[i];HASH_ADD_INT(set, key, tmp);} else {return true;}}return false;
}