(Java) LeetCode 412. Fizz Buzz —— Fizz Buzz

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"
]

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这道题让我明白了Java内“String.valueOf()”比字符串拼接快那么一点，仅此而已。

 

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Java

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

 

Python

class Solution(object):
    def fizzBuzz(self, n):
        """
        :type n: int
        :rtype: List[str]
        """
        res = []
        for i in range(1, n+1):
            if i%15 == 0:
                res.append('FizzBuzz')
            elif i%3 == 0:
                res.append('Fizz')
            elif i%5 == 0:
                res.append('Buzz')
            else:
                res.append(str(i))
        return res