import java.util.Scanner;

public class RandomTest {

    private static final int maxVal = 9;
    public static void main(String[] args) {

    int numVals;
    int[] count;

    numVals = getNumVals();
    count = new int [numVals];
    genCounts(numVals, count);
    showCounts(count);

    } // main

    // Input and return the number of random integers to be generated.
    // Quit if an invalid number is entered.

    private static int getNumVals() {
        Scanner input = new Scanner(System.in);
        int num = 0;

        System.out.print("Enter number of integers: ");

        try {
            num = input.nextInt();
        }

        catch(Exception e) {
            System.out.println("Error: Invalid number.");
            System.exit(0);
        }

        return num;
    } // getNumVals

    // Generate numVals random integers in the range 0 - maxVal, inclusive.
    // Record in the count array at index k the number of times that k occurs
    // as one of the random integers.

    private static void genCounts(int numVals, int[] count) {
        for(int k = 0; k < count.length; k++)
            //count[k] = (int)(Math.random() * (maxVal + 1));
            count[(int)(Math.random() * (maxVal + 1))]++;


    } // genCounts

    private static void showCounts(int[] count) {
        String line;

        for(int k = 0; k < count.length; k++) {
            line = String.format("Random number %1$3d: %2$6d", k + 1, count[k]);

            System.out.println(line);
        }

    } // showCounts

    // Display the counts recorded in the count array.

    //private static void showFreqs(int numVals, int[] count) {

    //} // showFreqs

    //private static int max(int[] count) {

    //} // max


    //public static int min(int[] count) {
    //} // min


} // RandomTest