C # collection class (III): Stack

STACK: Stack, indicating a simple post-first-out non-generic set of objects. Push method into the stack, pop method out of the stack. Using System;
Using System. Collections. Generic;
Using System. text;
Using System. collections;
Namespace Leleapplication1
{
Class Program
{
Static   Void Main ( String [] ARGs)
{
Stack sk =   New Stack ();
Stack sk2 =   New Stack ();
Foreach ( Int I In   New   Int [ 4 ] {1,2,3,4} )
{
SK. Push (I );//Inbound Stack
Sk2.push (I );
}

Foreach ( Int I In SK)
{
Console. writeline (I );//Traversal
}

SK. Pop (); // Outbound Stack
Console. writeline ( " Pop " );
Foreach ( Int I In SK)
{
Console. writeline (I );
}

Sk2.peek (); // The last item is not deleted.
Console. writeline ( " Peek " );
Foreach ( Int I In Sk2)
{
Console. writeline (I );
}
}
}
}