FizzBuzz.java

/*
 * Given number n. Print number from 1 to n. But:

when number is divided by 3, print "fizz".
when number is divided by 5, print "buzz".
when number is divided by both 3 and 5, print "fizz buzz".
Example
If n = 15, you should return:

["1", "2", "fizz", "4", "buzz", "fizz", "7", "8", "fizz", 
"buzz", "11", "fizz", "13", "14", "fizz buzz"]
 */
public class FizzBuzz {

    /**
     * param n: As description.
     * return: A list of strings.
     */
    public ArrayList<String> fizzBuzz(int n) {
        ArrayList<String> result = new ArrayList<String>();
        for (int i = 1; i <= n; ++i) {
            if (i % 15 == 0)
                result.add("fizz buzz");
            else if (i % 3 == 0)
                result.add("fizz");
            else if (i % 5 == 0)
                result.add("buzz");
            else
                result.add(String.valueOf(i));
        }
        return result;
    }

}