public void test_Stack()
{
Stack s = new Stack();
s.push(99);
s.push(45);
s.push(7);
s.displayStack();
Console.WriteLine("peek: " + s.peek());
Console.WriteLine("pop: ");
s.pop();
Console.WriteLine("peek: " + s.peek());
}
static void Main()
{
int n;
Console.Write("Nhap so can doi:");
n = int.Parse(Console.ReadLine());
Stack T = new Stack();
string st = "0123456789ABCDEF";
while (n != 0)
{
T.push((int)st[n % 16]);
n = n / 16;
}
Console.Write("Ket qua doi sang hexa :");
while (!T.empty())
{
Console.Write("{0}", (char)T.pop());
}
Console.ReadLine();
}
