package Week4_Lab;

public class StackOfIntegers {
    private int[] elements;
    private int size;

    public StackOfIntegers(){
        this(16);
    }
    public StackOfIntegers(int capacity){
        this.elements = new int[capacity];
        this.size = -1;
    }

    public boolean empty(){
        return size == -1;
    }
    public int peek(){
        return elements[size - 1];
    }

    public void push(int value){
        this.size++;
        this.elements[size] = value;
    }
    public int pop(){
        int value = elements[size];
        this.size--;
        return value;
    }
    public int getSize(){
        return size + 1;
    }
}