数到3时打印Fizz，5时打印Buzz Fizz Buzz

问题：

Write a program that outputs the string representation of numbers from 1 to n.

But for multiples of three it should output “Fizz” instead of the number and for the multiples of five output “Buzz”. For numbers which are multiples of both three and five output “FizzBuzz”.

Example:

n = 15,
Return:
[
    "1",
    "2",
    "Fizz",
    "4",
    "Buzz",
    "Fizz",
    "7",
    "8",
    "Fizz",
    "Buzz",
    "11",
    "Fizz",
    "13",
    "14",
    "FizzBuzz"
]

解决：

① 直接解决，3的倍数输出Fizz，5的倍数输出Buzz。

class Solution { //6ms
    public List<String> fizzBuzz(int n) {
        List<String> res = new ArrayList<>();
        for (int i = 1;i <= n;i ++){
            String tmp = "";
            if (i % 3 != 0 && i % 5 != 0){
                tmp += i;
                res.add(tmp);
                tmp = "";
                continue;
            }
            if (i % 3 == 0){
                tmp += "Fizz";
            }
            if (i % 5 == 0){
                tmp += "Buzz";
            }
            res.add(tmp);
            tmp = "";
        }
        return res;
    }
}

② 

class Solution { //4ms
    public List<String> fizzBuzz(int n) {
        List<String> res = new ArrayList();
        if (n == 0) return res;
        int count = 1;
        while (count <= n) {
            if (count % 3 == 0 && count % 5 == 0) res.add("FizzBuzz");
            else if (count % 3 == 0) res.add("Fizz");
            else if (count % 5 == 0) res.add("Buzz");
            else res.add(String.valueOf(count));
            count ++;
        }
        return res;
    }
}