Implement word count in Go

exercise-maps.go

// My solution to https://go.dev/tour/moretypes/23
package main

import (
	"strings"

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

func WordCount(s string) map[string]int {
	m := make(map[string]int)
	words := strings.Fields(s)
	for _, v := range words {
		count, exists := m[v]
		if exists {
			m[v] = count + 1
		} else {
			m[v] = 1
		}
	}
	return m
}
func main() {
	wc.Test(WordCount)
}