package mainimport (    "fmt"    "bufio"    "io"    "os"    "strconv"    "flag")var infile *string=flag.String("i","unsorted.data","File contains values for sorting")var outfile *string=flag.String("o","sorted.data","File to receive sorted values ")var algorithm *string=flag.String("a","qsort","Sort algorithm")func readValues(infile string)(values []int,err error){    file,err:=os.Open(infile)    if(err!=nil){        fmt.Println("Failed to open the input file ",infile)        return    }    defer file.Close()    br:=bufio.NewReader(file)    values=make([]int ,0)    for {        line ,isPrefix,err1:=br.ReadLine()        if err1!=nil{            if err1!=io.EOF{                err=err1            }            break        }        if isPrefix{            fmt.Println("A too long line ,seems unexpected.")            return        }        str:=string(line)//转换字符数组为字符串        value,err1:=strconv.Atoi(str)        if err1!=nil{            err=err1            return        }        values=append(values,value)    }    return}func writeValues(values []int,outfile string) error{    file,err:=os.Create(outfile)    if err!=nil{        fmt.Println("Failed to create the outout file ",outfile)        return err    }    defer  file.Close()    for _,value:=range values{    str:=strconv.Itoa(value)        file.WriteString(str+"\n")    }    return nil}//冒泡排序法func BubbleSort(values []int) []int{    flag:=true    for i:=0;i
     
      values[j+1]{                values[j],values[j+1]=values[j+1],values[j]                flag=false            }        }        if flag==true{            break        }    }    return values;}func main() {flag.Parse()    if infile!=nil{        fmt.Println("infile=",*infile," outfile=",*outfile," algorithm=",*algorithm)    }    values,err:=readValues(*infile)    if(err==nil){        fmt.Println("read values:",values)        values=BubbleSort(values)        errout:= writeValues(values,*outfile)        if errout!=nil{            fmt.Println(errout)        }    } else{        fmt.Println(err)    }}