golang-练习1

package main
import (
  "fmt"
  "strings"  
)

func MyPrintf(a string) string {	
	mm := strings.FieldsFunc(a,split)
    fmt.Println(mm)
    for i:=0;i<(len(mm));i++{
    	if len(mm[0])<len(mm[i]){
    	 mm[0]=mm[i]
    	}        
    }
    kk :=mm[0]
    return kk
}


func split(s rune) bool{	
		if ((s>=‘a‘&&s<=‘z‘)||(s>=‘A‘&&s<=‘Z‘)){
			return false
		}
		return true
	}


 func  main() {
 	var nn string
	nn = "fun&!! time"
     mm := MyPrintf(nn)
     fmt.Println(mm)
 }