fizzBuzz.java

/* This is slightly more difficult version of the famous FizzBuzz problem 
 * which is sometimes given as a first problem for job interviews. Consider 
 * the series of numbers beginning at start and running up to but not 
 * including end, so for example start=1 and end=5 gives the series 
 * 1, 2, 3, 4. Return a new String[] array containing the string form of 
 * these numbers, except for multiples of 3, use "Fizz" instead of the 
 * number, for multiples of 5 use "Buzz", and for multiples of both 3 and 5 
 * use "FizzBuzz". In Java, String.valueOf(xxx) will make the String form of 
 * an int or other type. This version is a little more complicated than the 
 * usual version since you have to allocate and index into an array instead 
 * of just printing, and we vary the start/end instead of just always doing 
 * 1..100.
 */
public String[] fizzBuzz(int start, int end) {
    String[] arr = new String[end - start];
    
    for(int i = start; i < end; i++) {
        if(i % 15 == 0) {
            arr[i - start] = "FizzBuzz";
        } else if(i % 3 == 0) {
            arr[i - start] = "Fizz";
        } else if(i % 5 == 0) {
            arr[i - start] = "Buzz";
        } else {
            arr[i - start] = String.valueOf(i);
        }
    }
                                                      
    return arr;
}