Q) Given a function which produces a random integer in the range 1 to 5, write a function which produces a random integer in the range 1 to 7. - Java solution

GenerateRandom.java

/**
 * Created by harshadura on 2/17/16.
 */
public class GenerateRandom {

    private static int[][] range7Array = new int[][]{
            {1, 2, 3, 4, 5},
            {6, 7, 1, 2, 3},
            {4, 5, 6, 7, 1},
            {2, 3, 4, 5, 6},
            {7, 4, 2, 3, 1}
    };

    public static void main(String args[]) {

        System.out.println("Random Number between 1-7: " + generateRandomNumberRange7());


    }

    private static int generateRandomNumberRange7() {
        int result = 0;

        int i = generateRandomNumberRange5();
        int j = generateRandomNumberRange5();
        result = range7Array[i - 1][j - 1];

        return result;
    }
    
    private static int generateRandomNumberRange5() {
        int min = 1;
        int max = 5;
        int randomNum = min + (int)(Math.random() * max);
        System.out.println("generateRandomNumberRange5: " + randomNum);
        return randomNum;
    }
}