import objectdraw.*;
import java.util.Random;

/**
 * Generate an array of random numbers and print out statistics
 * about the numbers.
 */
public class RandomStats extends FrameWindowController {

    // Maximum and minimum array size
    private static final int MAX_SIZE = 20;
    private static final int MIN_SIZE = 10;

    // Maximum value of array items
    private static final int MAX_VAL = 10;

    private Random rand = new Random();

    public void onMousePress(Location point) {

        // generate a new array of random size
        int arraySize = rand.nextInt(MAX_SIZE - MIN_SIZE) + MIN_SIZE;
        System.out.println("Using " + arraySize + " items");
        int[] randomNums = new int[arraySize];

        // populate the array with random values
        for (int i = 0; i < randomNums.length; i++) {
            randomNums[i] = rand.nextInt(MAX_VAL);
        }

        // print out the values of the array
        for (int i = 0; i < randomNums.length; i++) {
            System.out.println("Item " + i + ": " + randomNums[i]);
        }

        // print out statistics about the array
        System.out.println("Max value is " + getMax(randomNums));
        System.out.println("Sum of elements is " + getSum(randomNums));
        System.out.println("Mode of values is " + this.getMode(randomNums));

        System.out.println();
        System.out.println();
        System.out.println();
    }

    public int getMax(int[] values) {
        int max = 0;
        for (int i = 0; i < values.length; i++) {
            if (values[i] > max) {
                max = values[i];
            }
        }
        return max;
    }

    public int getSum(int[] values) {
        int sum = 0;
        for (int i = 0; i < values.length; i++) {
            sum = sum + values[i];
        }
        return sum;
    }

    public int getMode(int[] values) {
        int mostFrequentValue = 0;
        int maxOccurrences = 0;

        // create an array to store the number of occurrences of
        // each possible array value
        int[] occurrences = new int[MAX_VAL];
        for (int i = 0; i < values.length; i++) {
            occurrences[values[i]]++;
            if (occurrences[values[i]] > maxOccurrences) {
                maxOccurrences = occurrences[values[i]];
                mostFrequentValue = values[i];
            }
        }

        return mostFrequentValue;
    }

}