''  4  / \  3 5  / \ / \  10 2 3 1
root = Node ( 4 ) NEW_LINE root . left = Node ( 3 ) NEW_LINE root . right = Node ( 5 ) NEW_LINE root . right . left = Node ( 3 ) NEW_LINE root . right . right = Node ( 1 ) NEW_LINE root . left . left = Node ( 10 ) NEW_LINE root . left . right = Node ( 2 ) NEW_LINE printNodes ( root ) NEW_LINE