using System;
using System.Collections.Generic;//用到了容器類
using System.Text.RegularExpressions;//用到了正則表達(dá)式

class Collections
{
 //C#容器Dictionary的基本使用
 public static void dictionaryTest() {
  Dictionary<string, int> dict = new Dictionary<string, int>();
  dict.Add("K1", 123);
  dict["K2"] = 456;
  dict.Add("K3", 789);
  Console.WriteLine("數(shù)據(jù)字典dict中的Key-value對為：");
  foreach (KeyValuePair<string, int> k in dict)
  {
   Console.WriteLine("{0}-{1}; ", k.Key, k.Value); //K1-123; K2-456; K3-789;
  } 
 }

 //C#容器List與HashSet的基本使用
 public static void listTest() {

  List<int> list = new List<int>();

  Console.WriteLine("輸入#，結(jié)束輸入！");
  Regex regex = new Regex("^[0-9]*$");
  String input_string = "";
  while (true)
  {
   Console.Write("請輸入數(shù)組的數(shù)字：");
   input_string = Console.ReadLine();
   if (input_string.Trim().CompareTo("#") == 0)
   {
    break;
   }
   else
   {
    if (regex.IsMatch(input_string))//利用正則表達(dá)式判斷是否輸入的是數(shù)字
    {
     list.Add(int.Parse(input_string));
    }
    else
    {
     Console.WriteLine("輸入的不是數(shù)字！請重新輸入！");
    }
   }
  }
  Console.WriteLine("輸入的List為：");
  for (int i = 0; i < list.Count; i++)
  {
   Console.Write(list[i] + " ");
  }
  Console.WriteLine();

  list = new List<int>(new HashSet<int>(list));//利用集合為list去重

  Console.WriteLine("List利用Set去重后為：");  
  for (int i = 0; i < list.Count; i++)
  {
   Console.Write(list[i] + " ");
  }
  Console.WriteLine(); ;
 
 }

 public static void Main(String[] args)
 {
  dictionaryTest();
  listTest();
  Console.ReadKey();//等待用戶按回車才結(jié)束程序
 }
}