[A Tour of Go] Exercise: Mapsの自分の解答

package main

import (
	"golang.org/x/tour/wc"
)

func WordCount(s string) map[string]int {
	words := make(map[string]int)
	var wordstorage string
	for i:=0; i < len(s); i++ {
		if s[i:i+1] == " " {
			words[wordstorage] += 1
			wordstorage = ""
		} else {
			wordstorage += s[i:i+1]
		}
	}
	words[wordstorage] += 1
	return words
}

func main() {
	wc.Test(WordCount)
}