// ==++==
//
//   Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ==--==

using System;

namespace System.Collections
{
    // A simple stack of objects.  Internally it is implemented as an array,
    // so Push can be O(n).  Pop is O(1).

    public class Stack : ICollection, ICloneable {
        public Stack();
        public Stack(int initialCapacity);
        public Stack(ICollection col);

        public virtual int Count { get; }
        public virtual bool IsSynchronized { get; }
        public virtual Object SyncRoot { get; }

        public virtual void Clear();
        public virtual Object Clone();
        public virtual bool Contains(Object obj);
        public virtual void CopyTo(Array array, int index);
        public virtual IEnumerator GetEnumerator();
        public virtual Object Peek();
        public virtual Object Pop();
        public virtual void Push(Object obj);
        public static Stack Synchronized(Stack stack);
        public virtual Object[] ToArray();
    }
}