public Node insertChg(Node node, int value)
	  {
		  if(node==null)
			  return new Node(value);
		  else 
		  {
			  if(node.right==null)
			  {
				  System.out.println("Rnull-"+node.value);
				  node.right = insertChg(node.right,value);
			  }
			  else
			  {
				  System.out.println("!Rnull-"+node.value);
				  node.left = insertChg(node.left,value);
			  }
			  return node;
		  }
	  }