Let us construct the tree shown in above diagram
root = new Node ( 20 ) ; root . left = new Node ( 8 ) ; root . right = new Node ( 22 ) ; root . left . left = new Node ( 4 ) ; root . left . right = new Node ( 12 ) ; root . left . right . left = new Node ( 10 ) ; root . left . right . right = new Node ( 14 ) ; var target = root . left . right ; printkdistanceNode ( root , target , 2 ) ;