tema20

import java.util.LinkedList;
import java.util.Queue;

public class tema20 {


    public void levelOrderQueue(Node root) {
        Queue<Node> q = new LinkedList<Node>();

        if (root == null)
            return;
        q.add(root);

        while (!q.isEmpty()) {
            Node n = (Node) q.remove();
            System.out.print(" " + n.data);

            if (n.left != null)
                q.add(n.left);

            if (n.down != null)
                q.add(n.down);

            if (n.right != null)
                q.add(n.right);

        }
    }


    public static void main(String[] args) throws java.lang.Exception {


        Node root = new Node(1);
        root.left = new Node(2);
        root.down = new Node(3);
        root.right = new Node(4);
        root.left.left = new Node(5);
        root.left.down = new Node(6);
        root.right.down = new Node(7);
        root.right.right = new Node(8);
        root.left.left.left = new Node(9);
        root.left.left.down = new Node(10);
        root.right.down.down = new Node(11);
        root.right.down.right = new Node(12);



        tema20 i = new tema20();
        System.out.println("Breadth First Search : ");
        i.levelOrderQueue(root);
    }


    static class Node {

        int data;
        Node left;
        Node right;
        Node down;


        public Node(int data) {

            this.data = data;
            this.left = null;
            this.right = null;
            this.down = null;

        }
    }
}