public void AddElement(int input)
{
try
{
StackHelper.CheckIfInt(input);
}
catch (Exception e)
{
throw e;
}
stack.Add(input);
}
public void RemoveElement(int elementPosition)
{
try
{
StackHelper.CheckIfInt(elementPosition);
}
catch (Exception e)
{
throw e;
}
stack.Remove(stack.ElementAt(elementPosition));
}
public int GetPrevious()
{
try
{
StackHelper.CheckIfInt(elementPosition);
}
catch (Exception e)
{
throw e;
}
return(stack.ElementAt(elementPosition - 1));
}