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


namespace test
{
    class Program
    {
        static void Main(string[] args)
        {
            IList<Student> oneStudents = new List<Student>();
            oneStudents.Add(new Student(1,false,"小新1","徐匯"));
            oneStudents.Add(new Student(2,false,"小新2","閔行"));
            oneStudents.Add(new Student(3, false, "小新3", "嘉定"));
            oneStudents.Add(new Student(4, false, "小新4", "閘北"));

            IList<Student> twoStudents = new List<Student>();
            twoStudents.Add(new Student(5, false, "小新5", "貴州"));
            twoStudents.Add(new Student(6, false, "小新6", "湖北"));
            twoStudents.Add(new Student(7, false, "小新7", "山東"));
            twoStudents.Add(new Student(8, false, "小新8", "西藏"));

            IList<Student> threeStudents = new List<Student>();
            threeStudents.Add(new Student(1, false, "小新1", "徐匯"));
            threeStudents.Add(new Student(2, false, "小新2", "閔行"));
            var bingji = oneStudents.Union(twoStudents, new StudentListEquality()).ToList();//并（全）集 
              var jiaoji = oneStudents.Intersect(threeStudents, new StudentListEquality()).ToList();//交集 
              var chaji = oneStudents.Except(threeStudents, new StudentListEquality()).ToList();//差集

              Console.WriteLine();
            Console.WriteLine("以下是并集的結(jié)果");            
            bingji.ForEach(x =>
            {
                Console.WriteLine(x.StudentId.ToString() + "    " + x.Sex.ToString() + "   " + x.Name.ToString()+" "+x.Address.ToString());
     
            });
            Console.WriteLine();
            Console.WriteLine("以下是交集的結(jié)果");           
            jiaoji.ForEach(x =>
            {
                Console.WriteLine(x.StudentId.ToString() + "    " + x.Sex.ToString() + "   " + x.Name.ToString() + " " + x.Address.ToString());

            });

            Console.WriteLine();
            Console.WriteLine("以下是差集的結(jié)果");            
            chaji.ForEach(x =>
            {
                Console.WriteLine(x.StudentId.ToString() + "    " + x.Sex.ToString() + "   " + x.Name.ToString() + " " + x.Address.ToString());

            });
        }

    }





    public class Student
    {
        public Student(int studentId, bool sex, String name, String address)
        {
            this.StudentId = studentId;
            this.Sex = sex;
            this.Name = name;
            this.Address = address;
        }
        public int StudentId { get; set; }
        public bool Sex { get; set; }
        public String Name { get; set; }
        public String Address { get; set; }
       
    }
    public class StudentListEquality : IEqualityComparer<Student>
    {
        public bool Equals(Student x, Student y)
        {
            return x.StudentId == y.StudentId;
        }

        public int GetHashCode(Student obj)
        {
            if (obj == null)
            {
                return 0;
            }
            else
            {
                return obj.ToString().GetHashCode();
            }
        }
    }



}

IList<int> firstNumbers = new List<int>() 
 
             { 
 
                 1,2,3,4,5,6,7 

             };

            IList<int> secondNumbers = new List<int>() 
 
             { 

                 8,9,10 

             };

            IList<int> thressNumbers = new List<int>() 
 
             { 

                 1,2,3 

             };


            var result1 = firstNumbers.Union(secondNumbers).ToList();
            var result2 = firstNumbers.Intersect(thressNumbers).ToList();
            var result3 = firstNumbers.Except(thressNumbers).ToList();
            Console.WriteLine("以下是并集的結(jié)果");
            result1.ForEach(x => Console.WriteLine(x));

            Console.WriteLine();
            Console.WriteLine("以下是交集的結(jié)果");
            result2.ForEach(x => Console.WriteLine(x));

            Console.WriteLine();
            Console.WriteLine("以下是差集的結(jié)果");
            result3.ForEach(x => Console.WriteLine(x));

            Console.WriteLine("以上是簡(jiǎn)單類型如：int string long。。。。。沒(méi)有實(shí)現(xiàn)IEqualityComparer<T>接口");