package main

import (
	"fmt"
	"sort"
	"strings"
)

/**
 *写一个程序，统计一个字符串中每个单词出现的次数。比如：”how do you do”中how=1 do=2 you=1。
 */

func main() {
	str := "how do you do"
	strMap := make(map[string]int, 10)
	strSlice := strings.Split(str, " ")
	for _, value := range strSlice {
		_, ok := strMap[value]
		if ok {
			strMap[value]++
		} else {
			strMap[value] = 1
		}
	}
	keys := []string{}
	for key := range strMap {
		keys = append(keys, key)
	}

	sort.Strings(keys)

	for _, key := range keys {
		fmt.Printf("%v: %v ", key, strMap[key])
	}
}