Here is the program that generates the list of all pairs of numbers from an interval: The program makes use of generic class Pair<T,S> which can be programmed in the following way:using System;
using System.Collections;
using System.Collections.Generic;
public class app {
public static void Main(){
Interval iv1 = new Interval(1,2);
IEnumerator e1 = iv1.GetEnumerator(),
e2 = iv1.GetEnumerator();
List<Pair<int,int>> pairs = new List<Pair<int,int>>();
while (e1.MoveNext()){
while (e2.MoveNext())
pairs.Add(new Pair<int,int>((int)(e1.Current), (int)(e2.Current)));
e2.Reset();
}
foreach(Pair<int,int> p in pairs)
Console.WriteLine("({0}, {1})", p.First, p.Second);
}
}
using System;
public class Pair<T,S>{
private T first;
private S second;
public Pair(T first, S second){
this.first = first; this.second = second;
}
public T First{
get {return first;}
}
public S Second{
get {return second;}
}
}