/** * File: hash_map.cs * Created Time: 2022-12-23 * Author: haptear (haptear@hotmail.com) */ namespace hello_algo.chapter_hashing; public class hash_map { [Test] public void Test() { /* 初始化哈希表 */ Dictionary map = new() { /* 添加操作 */ // 在哈希表中添加键值对 (key, value) { 12836, "小哈" }, { 15937, "小啰" }, { 16750, "小算" }, { 13276, "小法" }, { 10583, "小鸭" } }; Console.WriteLine("\n添加完成后,哈希表为\nKey -> Value"); PrintUtil.PrintHashMap(map); /* 查询操作 */ // 向哈希表输入键 key ,得到值 value string name = map[15937]; Console.WriteLine("\n输入学号 15937 ,查询到姓名 " + name); /* 删除操作 */ // 在哈希表中删除键值对 (key, value) map.Remove(10583); Console.WriteLine("\n删除 10583 后,哈希表为\nKey -> Value"); PrintUtil.PrintHashMap(map); /* 遍历哈希表 */ Console.WriteLine("\n遍历键值对 Key->Value"); foreach (var kv in map) { Console.WriteLine(kv.Key + " -> " + kv.Value); } Console.WriteLine("\n单独遍历键 Key"); foreach (int key in map.Keys) { Console.WriteLine(key); } Console.WriteLine("\n单独遍历值 Value"); foreach (string val in map.Values) { Console.WriteLine(val); } } }