/** * File: hash_map.dart * Created Time: 2023-03-29 * Author: liuyuxin (gvenusleo@gmail.com) */ /* Driver Code */ void main() { /* Initialize hash table */ final Map map = {}; /* Add operation */ // Add key-value pair (key, value) to the hash table map[12836] = "Ha"; map[15937] = "Luo"; map[16750] = "Suan"; map[13276] = "Fa"; map[10583] = "Ya"; print("\nAfter adding, the hash table is\nKey -> Value"); map.forEach((key, value) => print("$key -> $value")); /* Query operation */ // Enter key to the hash table, get value final String? name = map[15937]; print("\nInput student ID 15937, found name $name"); /* Remove operation */ // Remove key-value pair (key, value) from the hash table map.remove(10583); print("\nAfter removing 10583, the hash table is\nKey -> Value"); map.forEach((key, value) => print("$key -> $value")); /* Traverse hash table */ print("\nTraverse key-value pairs Key->Value"); map.forEach((key, value) => print("$key -> $value")); print("\nIndividually traverse keys Key"); map.keys.forEach((key) => print(key)); print("\nIndividually traverse values Value"); map.forEach((key, value) => print("$value")); map.values.forEach((value) => print(value)); }