1、題目

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" ]

2、代碼實現

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

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3、總結

我當時寫的時候把 for int = 0; i <= n; ++i 如果輸入i = 0就不行了。 把i = 1開始就對了，因為你看題目輸出，都是從1開始，所以不要慣性思維老是從i ?= 0 開始，i ＝0 ，i ％ 3 ＝＝ 0 ，i ％ 5 ＝＝0

所以以后寫代碼一定要注意i的初始位置。

總結

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