Printing the level order data in reverse order in graph

Given an algorithm for printing the level order data in reverse order.

Source Code:
Github: BinaryTreeReverseLevelOrder.java

Output:

         
Tree : 
 
       F               
      / \       
     /   \      
    /     \     
   /       \    
   B       G       
  / \       \   
 /   \       \  
 A   D       I   
    / \     /   
    C E     H   
                                

Reverse level order : 

C, E, H, 
A, D, I, 
B, G, 
F,