题目:FizzBuzz
从stdin得到数字N(<10^7),然后从打印出从1到N的数字。输出到stdout,假设数字是3的倍数的话就仅仅打印“Buzz”,假设数字是5的倍数的话就仅仅打印“Fizz”,假设数字同一时候是3和5的倍数的话就打印“FizzBuzz”.
比如输入为15时。输出为:
1
2
Fizz
4
Buzz
Fizz
7
8
Fizz
Buzz
11
Fizz
13
14
FizzBuzz
我当时提交的java代码为:
import java.util.*; public class Solution { public static void main(String args[] ) throws Exception { /* Enter your code here. Read input from STDIN. Print output to STDOUT */ Scanner in = new Scanner(System.in); int n = in.nextInt(); for(int i=1; i<=n; i++) { if(i % 15 == 0) { System.out.println("FizzBuzz"); } else if(i % 3 == 0) { System.out.println("Fizz"); } else if(i % 5 == 0) { System.out.println("Buzz"); } else { System.out.println(i); } } } }近期写scala比較多,看着if,else if非常闹心,于是过后又改了一个更简洁的版本号:
import java.io.*; import java.util.*; public class CodingProblem2 { public static void main(String[] args) { Scanner in = new Scanner(System.in); int n = in.nextInt(); for(int i = 1; i <= n; i++) { String output = ""; if (i % 3 == 0) output = "Fizz"; if (i % 5 == 0) output += "Buzz"; if (output == "") output = Integer.toString(i); System.out.println(output); } } }