using System using System Collections Generic using System Linq using

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
class MyStack<T>
{
private T[] array;
private int capacity;
public int size { get; private set; }
public MyStack(){
capacity = 10;
array = new T[capacity];
size = 0;
}
public void push(T obj)
{
if (size == capacity)
{
T[] tmp = new T[2 * capacity];
for (int i = 0; i < size; ++i)
{
tmp[i] = array[i];
}
array = tmp;
capacity *= 2;
}
array[size++] = obj;
}
public T top()
{
if (size == 0)
{
throw new Exception("Zero stack size");
}
return array[size - 1];
}
public void pop()
{
array[size] = default(T);
--size;
}
}
class Program
{
static void Main(string[] args)
{
int[] inputData = new int[] { 1, 2, 3, -1, -2, -3 };
MyStack<int> st = new MyStack<int>();
int[] result = new int[inputData.Length];
int curIndex = 0;
foreach (int x in inputData)
{
if (x < 0)
{
result[curIndex++] = x;
}
else
{
st.push(x);
}
}
while (st.size > 0)
{
result[curIndex++] = st.top();
st.pop();
}
foreach (int x in result)
{
Console.Write(x + " ");
}
Console.WriteLine();
}
}