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hello-algo/codes/csharp/chapter_hashing/hash_map.cs

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/**
* File: hash_map.cs
* Created Time: 2022-12-23
* Author: haptear (haptear@hotmail.com)
*/
using hello_algo.include;
using NUnit.Framework;
namespace hello_algo.chapter_hashing
{
public class hash_map {
[Test]
public void Test()
{
/* 初始化哈希表 */
Dictionary<int, String> map = new ();
/* 添加操作 */
// 在哈希表中添加键值对 (key, value)
map.Add(12836, "小哈");
map.Add(15937, "小啰");
map.Add(16750, "小算");
map.Add(13276, "小法");
map.Add(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);
}
}
}
}