import java.text.DecimalFormat; class Main { public static void main(String[] args) { int[][] mhs = {{81, 90, 62},{50, 83, 87},{89, 55, 65},{77, 70, 92}}; System.out.println("NRP\tRata-rata"); System.out.println("----------------"); for(int i = 0; i < mhs.length; i++) { System.out.print(i+1 + "\t"); double rt = 0; for(int j = 0; j < mhs[i].length; j++) { rt = rt + mhs[i][j]; } DecimalFormat df = new DecimalFormat("#.##"); System.out.println(df.format(rt / mhs[i].length)); } } }