public static void main ( String args [ ] ) {
  Node root = new Node ( 5 ) ;
  root . left = new Node ( 2 ) ;
  root . right = new Node ( 6 ) ;
  root . left . left = new Node ( 1 ) ;
  root . left . right = new Node ( 4 ) ;
  root . left . right . left = new Node ( 3 ) ;
  root . right . right = new Node ( 8 ) ;
  root . right . right . right = new Node ( 9 ) ;
  root . right . right . left = new Node ( 7 ) ;
  System . out . println ( "diffence between sums is " + evenOddLevelDifference ( root ) ) ;
}

public static void main ( String args [ ] ) { Node root = new Node ( 5 ) ; root . left = new Node ( 2 ) ; root . right = new Node ( 6 ) ; root . left . left = new Node ( 1 ) ; root . left . right = new Node ( 4 ) ; root . left . right . left = new Node ( 3 ) ; root . right . right = new Node ( 8 ) ; root . right . right . right = new Node ( 9 ) ; root . right . right . left = new Node ( 7 ) ; System . out . println ( " diffence ▁ between ▁ sums ▁ is ▁ " + evenOddLevelDifference ( root ) ) ; }
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