Method main

16_BinaryTrees/TopView.java:67–108

(String args[])

        System.out.println();
    }
    public static void main(String args[]) {
        /*
                    1
                   / \
                  2   3
                 / \ / \
                4  5 6  7  

                expected output : 4 2 1 3 7
        */
        Node root = new Node(1);
        root.left = new Node(2);
        root.right = new Node(3);
        root.left.left = new Node(4);
        root.left.right = new Node(5);
        root.right.left = new Node(6);
        root.right.right = new Node(7);

        /*
                    1
                   / \
                  2   3
                   \ 
                    4  
                     \
                      5
                       \
                        6 

                expected output : 2 1 3 6
        */
        Node root2 = new Node(1);
        root2.left = new Node(2);
        root2.right = new Node(3);
        root2.left.right = new Node(4);
        root2.left.right.right = new Node(5);
        root2.left.right.right.right = new Node(6);

    
        topView(root);
        topView(root2);
    }
}