go 分金币, switch case和字符用法

package main

import (
	"fmt"
)

var (
	coins = 100
	users = []string {
		"Matthew", "sarah", "Augustus", "Heidi", "Emilie", "Peter", "Giana", "Adriano", "Aaron", "Elizabeth",
	}
	distribution = make(map[string]int,len(users))	
)

func calcCoin(username string) int {
	var sum int  = 0
	for _, char := range username{
		switch char {
		case 'a','A':
			sum = sum+1
		case 'e','E':
			sum = sum+1
		case 'i','I':
			sum = sum+2
		case 'o','O':
			sum = sum+3
		case 'u','U':
			sum = sum+5
		}
	}
	return sum
}

func dispatchCoin()int {
	var left int = coins
	for _,username := range users{
		allCoin := calcCoin(username)
		left = left - allCoin
		value,ok := distribution[username]
		if !ok{
			distribution[username] = allCoin			
		}else{
			distribution[username] = value + allCoin
		}
	}
	return left
}

func main() {
	left := dispatchCoin()
	for username,coin:=range distribution{
		fmt.Printf("user:%s have %d coins\n",username,coin)
	}
	fmt.Printf("left coin:%d \n",left)
}

输出:

user:Elizabeth have 5 coins
user:Augustus have 16 coins
user:Heidi have 5 coins
user:Emilie have 6 coins
user:Aaron have 5 coins
user:Adriano have 7 coins
user:Matthew have 2 coins
user:sarah have 2 coins
user:Peter have 2 coins
user:Giana have 4 coins
left coin:46