[PAT] 1027 Colors in Mars （20 分） Java

People in Mars represent the colors in their computers in a similar way as the Earth people. That is, a color is represented by a 6-digit number, where the first 2 digits are for Red, the middle 2 digits for Green, and the last 2 digits for Blue. The only difference is that they use radix 13 (0-9 and A-C) instead of 16. Now given a color in three decimal numbers (each between 0 and 168), you are supposed to output their Mars RGB values.

Input Specification:

Each input file contains one test case which occupies a line containing the three decimal color values.

Output Specification:

For each test case you should output the Mars RGB value in the following format: first output #, then followed by a 6-digit number where all the English characters must be upper-cased. If a single color is only 1-digit long, you must print a 0 to its left.

Sample Input:

15 43 71

Sample Output:

#123456

 1 package pattest;
 2 
 3 import java.io.BufferedReader;
 4 import java.io.IOException;
 5 import java.io.InputStreamReader;
 6 
 7 /**
 8  * @Auther: Xingzheng Wang
 9  * @Date: 2019/2/21 20:59
10  * @Description: pattest
11  * @Version: 1.0
12  */
13 public class PAT1027 {
14     static final int size = 3;
15     static char[] num = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C'};
16 
17     public static void main(String[] args) throws IOException {
18         BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
19         String[] split = reader.readLine().split(" ");
20         System.out.print("#");
21 
22         for (int i = 0; i < size; i++) {
23             StringBuilder stringBuilder = new StringBuilder();
24             int n = Integer.parseInt(split[i]);
25             do {
26                 stringBuilder.append(num[n % 13]);
27                 n %= 13;
28             } while (n != 0);
29             if (stringBuilder.length() <= 1)
30                 System.out.print(num[0]);
31             System.out.print(stringBuilder.reverse().toString());
32         }
33     }
34 }