Удаление элемента из стека (паттерн адаптер) - C# - Ответ 8221200

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Text; 
using System.Collections; 
 
namespace adapter 
{ 
class Program 
{ 
static void Main() 
{ 
Client pr = new Client(); 
Target target = new Adapter(); 
Console.Write("Введите вектор:\na = "); 
int a = Convert.ToInt32(Console.ReadLine()); 
pr.push(target, a); 
Console.Write("b = "); 
int b = Convert.ToInt32(Console.ReadLine()); 
pr.push(target, b); 
Console.Write("c = "); 
int c = Convert.ToInt32(Console.ReadLine()); 
pr.push(target, c); 
Console.Write("d = "); 
int d = Convert.ToInt32(Console.ReadLine()); 
pr.push(target, d); 
Console.Write("e = "); 
int e = Convert.ToInt32(Console.ReadLine()); 
pr.push(target, e); 
pr.show(); 
Console.WriteLine("Удалить элемент [№]:"); 
a = Convert.ToInt32(Console.ReadLine()); 
pr.pop(target, a); 
pr.show(); 
pr.empty(target, a); 
pr.show(); 
Console.Read(); 
} 
} 
abstract class Target 
{ 
public abstract int push(int a); 
public abstract int pop(int a); 
public abstract int empty(int a); 
} 
class Adapter : Target 
{ 
private Adaptee adaptee = new Adaptee(); 
public override int push(int a) 
{ 
return adaptee.Specificpush(a); 
} 
public override int pop(int a) 
{ 
return adaptee.Specificpop(a); 
} 
public override int empty(int a) 
{ 
return adaptee.Specificempty(a); 
} 
} 
class Adaptee 
{ 
public int Specificpush(int a) 
{ 
return a; 
} 
public int Specificpop(int a) 
{ 
return a; 
} 
public int Specificempty(int a) 
{ 
return a; 
} 
} 
class Client 
{ 
ArrayList a = new ArrayList(); 
public void push(Target target, int b) 
{ 
a.Add(target.push(b)); 
} 
 
public void show() 
{ 
foreach (int s in a) 
Console.Write(s); 
Console.Write("\n"); 
} 
 
public void pop(Target target, int b) 
{ 
a.RemoveAt(target.pop(b)); 
} 
public void empty(Target target, int b) 
{ 
if (a.Count == 0) 
{ 
Console.Write("вектор пуст"); 
} 
else 
{ 
Console.Write("вектор имеет значения\n"); 
} 
 
} 
} 
}