Scanner sa=new Scanner(System.in); System.out.println("请输入成绩"); int [] i = new int[5]; //接入数据 for (int j = 0; j < i.length; j++) { i[j] = sa.nextInt(); } int max=i[0];//最大值 int min=i[0];//最小值 for(int l=1;l<i.length;l++) { if(i[l]>max) { max=i[l]; } if (i[l]<min) { min=i[l]; } } float ava=0;//平均值 for (int a = 0; a <i.length; a++) { ava+=i[a]; } ava/=i.length;//方差 float diff = 0; for (int a = 0; a < i.length; a++) { diff+=(i[a]-ava)*(i[a]-ava); } double number = Math.sqrt(diff); number/=i.length;//标准差 System.out.println("最大值为 "+max); System.out.println("最小值为 "+min); System.out.println("平均数为 "+ava); System.out.println("标准值为 "+number);
计算成绩的最大值、最小值、平均值、标准差
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