PAT 1027

简单题，进制转换

 1 import java.util.*;
 2 import java.io.*;
 3
 4 class FastReader{
 5     BufferedReader reader;
 6     StringTokenizer tokenizer;
 7
 8     public FastReader(InputStream stream){
 9         reader = new BufferedReader(new InputStreamReader(stream));
10         tokenizer = null;
11     }
12
13     public String next(){
14         while (tokenizer == null || !tokenizer.hasMoreTokens()){
15             try{
16                 tokenizer = new StringTokenizer(reader.readLine());
17             } catch (Exception e){
18                 throw new RuntimeException(e);
19             }
20         }
21
22         return tokenizer.nextToken();
23     }
24
25     public int next_int(){
26         return Integer.parseInt(next());
27     }
28 }
29
30 public class Main {
31     static String convert_base(int color){
32         char[] tabulate = {
33             ‘0‘, ‘1‘, ‘2‘, ‘3‘, ‘4‘, ‘5‘, ‘6‘, ‘7‘, ‘8‘, ‘9‘,
34             ‘A‘, ‘B‘, ‘C‘,
35         };
36
37         StringBuilder res = new StringBuilder();
38         char low = tabulate[color % 13];
39         char high = tabulate[color / 13];
40
41         res.append(high);
42         res.append(low);
43
44         return res.toString();
45     }
46
47     public static void main(String[] args){
48         FastReader reader = new FastReader(System.in);
49         int R, G, B;
50         R = reader.next_int();
51         G = reader.next_int();
52         B = reader.next_int();
53
54         StringBuilder res = new StringBuilder();
55         res.append(‘#‘);
56         res.append(convert_base(R));
57         res.append(convert_base(G));
58         res.append(convert_base(B));
59
60         System.out.println(res);
61     }
62 }