By preallocating the ArrayList with the initial capacity of n, we avoid resizing the list during the loop, which improves performance. Instead of using multiple conditional statements, used StringBuilder to build the result string. Additionally, used sb.length() == 0 to check if the StringBuilder is empty, instead of using multiple else if state…

FizzBuzz in Java.java

/**
 * Generates a list of strings based on the given integer input.
 *
 * @param  n  the maximum integer value to generate strings for
 * @return    a list of strings containing the generated values
 */
public List<String> fizzBuzz(int n) {
    List<String> res = new ArrayList<>(n)
    for (int i = 1; i <= n; i++) {
        StringBuilder sb = new StringBuilder()
        if (i % 3 == 0) {
            sb.append("Fizz")
        }
        if (i % 5 == 0) {
            sb.append("Buzz")
        }
        if (sb.length() == 0) {
            sb.append(i)
        }
        res.add(sb.toString())
    }
    return res
}

I hate FizzBuzz questions. Dumb Question.