// RecursivePostOrderTraverse traverse by post-order recursively.
RecursivePostOrderTraverse traverse by post-order recursively.
// RecursivePostOrderTraverse traverse by post - order recursively .
func RecursivePostOrderTraverse(n *Node) {
	if n != nil {
		RecursivePostOrderTraverse(n.Left)
		RecursivePostOrderTraverse(n.Right)
		fmt.Printf("%d ", n.Key)
	}
}
func RecursivePostOrderTraverse ( n * Node ) { if n != nil { RecursivePostOrderTraverse ( n . Left ) RecursivePostOrderTraverse ( n . Right ) fmt . Printf ( " " , n . Key ) } }
RecursivePostOrderTraverse traverse by post-order recursively.
RecursivePostOrderTraverse traverse by post - order recursively .