求数组中最大最小值 

<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8" />
        <title></title>
    </head>
    <body>
        <script type="text/javascript">
            
            var perCount=parseInt(prompt('请输入全班人数'))
            var perScores=[];
            for(var i=0;i<perCount;i++){
                perScores[perScores.length]=parseInt(prompt('请输入第'+(i+1)+'个人的成绩'))
            }
            console.log(perScores)
            
            var sum=0;
            var avg=0;
            var max=perScores[0];
            var min=perScores[0];
            for(var i=0;i<perScores.length;i++){
                sum+=perScores[i]
                if(max<perScores[i]){
                    max=perScores[i]
                }
                
                if(min>perScores[i]){
                    min=perScores[i]
                }
            }
            avg=sum/perScores.length
            console.log("和为:"+sum)
            console.log("最小值为："+min)
            console.log("最大值为："+max)
            console.log("平均值为："+avg)
            
            
        </script>
    </body>
</html>

 

posted @ 2019-06-04 11:00  就这样子吧  阅读(426)  评论(0)    收藏  举报