makaron

       // 3
        long[][] matrix = new long [4][3];
        for(int i=0;i<matrix.length;i++){
        for(int j=0;j<matrix[i].length;j++){
            matrix[i][j]=5;
        }
        }
        System.out.println(Arrays.deepToString(matrix));
        // 4
        byte[] values=new byte[10];
        for(int n=0;n<values.length;n++) {
            values[n]=1;
        }
        System.out.println(Arrays.toString(values));



        //7
        Scanner in = new Scanner(System.in);
        int[] array = new int[5];
        System.out.println("Enter the scores of your tests: ");
        for(int i = 0; i < array.length; i++) {
        	array[i] = in.nextInt();

        }
        System.out.println("The average is : "+Arrays.stream(array).average().orElse(Double.NaN));
           //8