package main

import (
	"fmt"
	"os"
	"sort"
)

func main(){
	PathCheck("D:/11")
}

func PathCheck(path string){
	b,err :=PathExists(path)
	if  err != nil {
		fmt.Println("exist err",err)
	}
	if !b{
		fmt.Println("不存在目录，重新创建")
		err = os.Mkdir("D:/11/", 0777)
		if  err != nil {
			fmt.Println("Mkdir err",err)
		}
	}
}

func PathExists(path string) (bool, error) {
	_, err := os.Stat(path)
	if err == nil {
		return true, nil
	}
	if os.IsNotExist(err) {
		return false, nil
	}
	return false, err
}

func groupAnagrams(strs []string) [][]string {
	res := [][]string{}
	m := make(map[string][]string)
	for _, str := range strs {
		tem := []byte(str)
		sortstring(tem)
		m[string(tem)] = append(m[string(tem)],str)
	}
	for _, va := range m {
		res = append(res,va)
	}

	return  res
}

func sortstring(s []byte){
	sort.Slice(s, func(i, j int) bool {
		return s[i]<s[j]
	})
}