Java数组-采用for循环和while计算十个学生的平均成绩并且取两位小数_for 循环输入10个人的成绩

案列演示,统计十个学生的平均分
public static void main(String[] args)throws Exception {
        double[] scores=new double[11];//长度为11
        double sum=0,average=0;
        Scanner sc=new Scanner(System.in);

        //输入部分
        for (int i=1;i<scores.length;i++){
            System.out.print("scores["+i+"] = ");
            scores[i]=sc.nextDouble();
        }
        //输出部分
    for (int i=1;i<scores.length;i++){
        sum+=scores[i];
    }
    average=sum/scores.length;
    System.out.println(scores.length-1+"个学生的总平均成绩为:"+String.format("%.2f",average));

}
}






采用while循环求10个学生成绩平均分
double[] scores = new double[11];
double sum = 0, average;
Scanner sc = new Scanner(System.in);
int i = 1;
while (i<scores.length) {

    System.out.print("scores[" + i + "]=");

    scores[i] = sc.nextDouble();

    sum = scores[i] + sum;
    i++;
}
average = sum / scores.length - 1;
System.out.println(scores.length - 1 + "个学生的平均成绩为:" + String.format("%.2f", average));
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