A Tour of Go解答めも

A Tour Of Go
https://go-tour-jp.appspot.com/

解けた問題だけ。

Exercise: Maps

exercise-map.go

package main

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

func WordCount(s string) map[string]int {
	wordMap := map[string]int{}
	splitWords := strings.Fields(s)
	for i := range splitWords {
		elem, ok := wordMap[splitWords[i]]
		if ok {
			wordMap[splitWords[i]] = elem + 1
		} else {
			wordMap[splitWords[i]] = 1
		}
	}
	return wordMap
}

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