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Stack-Repo / data /train /ToreAad /Inf102 /src /java /exercises /Stack.java

denisko

cnanged dir structure and removed features file

3e77472 over 3 years ago

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package torea;

class Stack{
    public static class ListStack<E> implements IStack<E>
    {
        private Node top = null;
        private int size;
        
        private class Node
        {
            E reference;
            Node next;
        }

        ListStack(){}

        @Override
        public boolean isEmpty() {
            return top == null;
        }

        @Override
        public E pop() {
            E item = top.reference;
            top = top.next;
            size--;
            return item;
        }

        @Override
        public E peek() {
            return top.reference;
        }

        @Override
        public void push(E item) {
            Node old_top = top;
            top = new Node();
            top.reference = item;
            top.next = old_top;
            size++;
        }

        @Override
        public int size() {
            return size;
        }

    }
}

	package torea;

	class Stack{
	public static class ListStack<E> implements IStack<E>
	{
	private Node top = null;
	private int size;

	private class Node
	{
	E reference;
	Node next;
	}

	ListStack(){}

	@Override
	public boolean isEmpty() {
	return top == null;
	}

	@Override
	public E pop() {
	E item = top.reference;
	top = top.next;
	size--;
	return item;
	}

	@Override
	public E peek() {
	return top.reference;
	}

	@Override
	public void push(E item) {
	Node old_top = top;
	top = new Node();
	top.reference = item;
	top.next = old_top;
	size++;
	}

	@Override
	public int size() {
	return size;
	}

	}
	}