public/subjects/btreeapplypostorder.en.md

btreeapplypostorder

Instructions

Write a function that applies a function using a postorder walk to each element in the tree.

Expected function

func BTreeApplyPostorder(root *TreeNode, f func(...interface{}) (int, error)) {

}

Usage

Here is a possible program to test your function :

package main

import (
       "fmt"
       piscine ".."
)

func main() {
	root := &piscine.TreeNode{Data: "4"}
	piscine.BTreeInsertData(root, "1")
	piscine.BTreeInsertData(root, "7")
	piscine.BTreeInsertData(root, "5")
	piscine.BTreeApplyPostorder(root, fmt.Println)

}

And its output :

student@ubuntu:~/piscine-go/test$ go build
student@ubuntu:~/piscine-go/test$ ./test
1
5
7
4
student@ubuntu:~/piscine-go/test$