stack.java

Very good Java Applet used to animate Inserting, Deleting and Searching (Preorder & Postorder algori

class stack
{

    public stack()
    {
        st = new int[20];
        top = -1;
    }

    public void push(int i)
    {
        st[++top] = i;
    }

    public int pop()
    {
        return st[top--];
    }

    public boolean isEmpty()
    {
        return top == -1;
    }

    private int st[];
    private int top;
}