题目

HJ105 记负均正II

golang 实现

package main

import (
	"bufio"
	"fmt"
	"io"
	"os"
	"strconv"
	"strings"
)

func main() {
	scanner := bufio.NewScanner(os.Stdin)
    nums:=make([]int,0)
    sum:=0
    minus:=0
	for scanner.Scan() {
		line := scanner.Text()
		fields := strings.Fields(line)
        for _,field:=range fields{
                num,_:=strconv.Atoi(field)
                if num <0{
                    minus=minus+1
                }else{
                    nums = append(nums,num)
                    sum = sum+num
                    
                }
        }
	}

	if err := scanner.Err(); err != nil {
		if err != io.EOF {
			fmt.Fprintln(os.Stderr, err)
		}
	}
    numsLen:=len(nums)
  
    if numsLen==0{
        fmt.Printf("%d\n%.1f",minus, 0.0)
    } else{
    avg:=float64(sum)/float64(numsLen)
    // value:=strconv.FormatFloat(avg, 'f', 1, 64)
   
        fmt.Printf("%d\n%.1f",minus,avg )
    }
}

提交结果