题解 | #图片整理#

package main

import (
	"bufio"
	"fmt"
	"os"
)

func main() {

	s := bufio.NewScanner(os.Stdin)
	for s.Scan() {
		str := s.Text()
		var list []int
		for i := 0; i <= 122; i++ {
			list = append(list, 0)

		}
		for _, r := range str {
			list[int(r)] += 1
		}

		newRuneList := []rune{}
		for i, count := range list {
			r := rune(i)
			for i := 0; i < count; i++ {
				newRuneList = append(newRuneList, r)
			}

		}
		fmt.Println(string(newRuneList))
	}

}