Driver code
public static void main ( String [ ] args ) { Node root1 = newNode ( 5 ) ; root1 . left = newNode ( 2 ) ; root1 . right = newNode ( 7 ) ; root1 . left . left = newNode ( 10 ) ; root1 . left . right = newNode ( 11 ) ; Node root2 = newNode ( 6 ) ; root2 . left = newNode ( 10 ) ; root2 . right = newNode ( 15 ) ; findFirstUnmatch ( root1 , root2 ) ; } }