HashTable Quiz

今天复习随机算法的时候，顺便想到的，大家做做看 （环境vs2003）,如果需要我会提供答案。

using System;
using System.Collections;
namespace HashTable
{
    
    public class MyKey
    {
        public int Key
        {
            set
            {
                key = value;
            }
        }

        private  int key=0;
        public MyKey(int num)
        {
            key=num;
        }
        public override int GetHashCode()
        {
            return key%5;
        }

        public override bool Equals(object obj)
        {
            return key==((MyKey)obj).key;
                        
        }
    


    }

    class HashTableTest
    {
        
        [STAThread]
        static void Main(string[] args)
        {
            MyKey key1=new MyKey(10);
            
            Hashtable ht=new Hashtable();
            ht.Add(key1,"Key1");

            key1.Key=11;
            bool isContained=ht.ContainsKey(key1);
            Console.Out.WriteLine("Is key1 contained in hashtable? {0}", isContained);

            MyKey key2=new MyKey(10);
            ht.Add(key2,"key2");
            Console.Out.WriteLine("Hashtable counts:"+ht.Count);

            MyKey key3=new MyKey(15);
            ht.Add(key3,"key3");
            Console.Out.WriteLine("Hashtable counts:"+ht.Count);

            MyKey key4=new MyKey(10);
            ht.Add(key4,"key4");



        }
    }
}