IT博客汇 | C# Dictionary容器练习

C# Dictionary容器练习

abilitytao发表于 2014-09-22 11:06:00

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

class MagicDictionary
{

private Dictionary dic;

public MagicDictionary()
{
dic = new Dictionary<string, string>();

}

void Add(String key, String value)
{
if (dic.ContainsKey(key)&&dic;[key]==value)
throw new Exception("KeyValuePair already exsits");
dic.Add(key, value);
}

void Remove(String key)
{
if (!dic.ContainsKey(key))
throw new Exception("it doesn't exsit");
dic.Remove(key);
}

void Set(String key, String value)
{
if (dic.ContainsKey(key))
dic[key] = value;
else
dic.Add(key, value);
}

String Get(String key)
{
return dic[key];
}

void PrintAll()
{
foreach (KeyValuePair i in dic)
{
Console.WriteLine(i.Key + " " + i.Value);
}
}

String TryGetValue(String key)
{
if (dic.ContainsKey(key))
return dic[key];
else
return "";
}

public String this[String key]
{
set
{
dic[key] = value;
}
get
{
return dic[key];
}
}

public static void Main()
{

try
{
MagicDictionary t = new MagicDictionary();
t.Add("Hi", "Hello");
// t.Add("Hi", "Hello");
t.Add("What", "ever");
t.Add("Pretty", "Girl");
t.Add("Apple", "Google");
t.PrintAll();
t.Remove("Pretty");
t.Remove("#$@#*$");
t.Set("What", "Whatever");
if (t.TryGetValue("Hi") != "")
Console.WriteLine("OK");
else
Console.WriteLine("Bu OK");

if (t.TryGetValue("Appoe") != "")
Console.WriteLine("OK");
else
Console.WriteLine("Bu OK");
Console.WriteLine(t.Get("Apple"));
t["Apple"] = "BIG GOOGLE";

t.PrintAll();
}
catch (System.Exception ex)
{
Console.WriteLine(ex.Message);
Console.WriteLine(ex.Message);
}

}

}

abilitytao 2014-09-22 19:06 发表评论