public static void main(String[] args) {int classNum=3;int stuNum=4;double sum=0;double avg=0;Scanner input=new Scanner(System.in);for(int i=1;i<=classNum;i++){System.out.println("shuru:"+i);for(int j=1;j<stuNum;j++)System.out.println("shuru:"+j);int score=input.nextInt();sum=sum+score;avg=sum/stuNum;System.out.println("averge:"+avg); }
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