Go Tour Exercise: Equivalent Binary Trees

Question

I am trying to solve equivalent binary trees exercise on go tour. Here is what I did;

package main

import \"tour/tree\"
import \"fmt\"

// Walk walks the tr         


        

Answer 1

My version

package main


import (
    "fmt"
    "golang.org/x/tour/tree"
)

// Walk walks the tree t sending all values
// from the tree to the channel ch.
func WalkRec(t *tree.Tree, ch chan int) {
    if t == nil {
        return
    }
    WalkRec(t.Left, ch)
    ch <- t.Value
    WalkRec(t.Right, ch)
}

func Walk(t *tree.Tree, ch chan int) {
    WalkRec(t, ch)
    close(ch)
}

// Same determines whether the trees
// t1 and t2 contain the same values.
func Same(t1, t2 *tree.Tree) bool {
    ch1 := make(chan int)
    ch2 := make(chan int)
    go Walk(t1, ch1)
    go Walk(t2, ch2)

    for {
        x, okx := <-ch1
        y, oky := <-ch2
        switch {
        case okx != oky:
            return false
        case x != y:
            return false
        case okx == oky && okx == false:
            return true
        }

    }

}

func main() {
    ch := make(chan int)
    go Walk(tree.New(1), ch)
    fmt.Println(Same(tree.New(1), tree.New(1)))
    fmt.Println(Same(tree.New(2), tree.New(1)))
    fmt.Println(Same(tree.New(1), tree.New(2)))
}