using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;namespace 集合简单练习
{class Program{static void Main(string[] args){}private static void Test3(){//奇偶分拣,奇数在前偶数在后List<int> result = new List<int>() { 12, 564, 32, 87, 15, 35, 54, 798, 153, 54 };List<int> oddList = new List<int>();List<int> evenList = new List<int>();foreach (var item in result){if (item % 2 == 0){evenList.Add(item);}else{oddList.Add(item);}}oddList.AddRange(evenList);ShowList(oddList);}private static void Test2(){//随机生成10个1---100之间的数放入到list中.1:不能重复.2:都是偶数int count = 0;List<int> result = new List<int>();while (count < 10){Random rom = new Random();int item = rom.Next(1, 101);if (!result.Contains(item) && item % 2 == 0){result.Add(item);count++;}}ShowList(result);Console.ReadLine();}private static void Test1(){//把两个集合去掉重复后合并成一个集合号List<string> lista = new List<string> { "a", "b", "c", "d" };List<string> listb = new List<string> { "c", "d", "e", "f", "g" };foreach (string item in listb){if (!lista.Contains(item)){lista.Add(item);}}ShowList(lista);Console.ReadLine();}//展示集合private static void ShowList(List<int> lista){foreach (var item in lista){Console.WriteLine(item);}Console.ReadLine();}private static void ShowList(List<string> lista){foreach (var item in lista){Console.WriteLine(item);}Console.ReadLine();}}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;namespace DictoryTest
{class Program{static void Main(string[] args){//统计单词出现次数string word = "hello,world.my name is DictoryTest";Dictionary<char, int> dt = new Dictionary<char, int>();foreach (var item in word){if (!dt.Keys.Contains(item)){dt.Add(item, 1);}else {dt[item] = dt[item]+1;}}foreach (KeyValuePair<char, int> kv in dt){Console.WriteLine(kv.Key +"一共出现了"+kv.Value+"次");}Console.Read();}}
}