using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
 
namespace ConsoleApplication3
{
    class Program
    {
        static void Main(string[] args)
        {
            Random rnd = new Random();
            var items = Enumerable.Range(1, 100).Select(a => rnd.Next(100)).ToList();
 
            //(1)100個の、1～100からなる数字列
            items.ForEach(a => Console.Write(a + ","));
            Console.WriteLine("\n---");
 
            //(2)重複を除いて、昇順で表示
            items.Distinct().OrderBy(a => a).ToList().ForEach(a => Console.Write(a + ","));
            Console.WriteLine("\n---");
 
            //(3)合計と平均
            Console.WriteLine("合計 " + items.Sum());
            Console.WriteLine("平均 " + items.Average());
 
 
        }
    }
}
 

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