华为上机测试题（数字字符串转二进制-java）

 1 import java.util.Scanner;
 2 
 3 public class Main {
 4 
 5     public static void main(String[] args) {
 6         
 7         String bitStr = "";
 8         
 9         Scanner cin = new Scanner(System.in);
10         String str = cin.nextLine();
11         
12         bitStr = getBitString(str);
13         
14         System.out.println(bitStr);
15         cin.close();
16         
17     }
18 
19     private static String getBitString(String str) {
20 
21         int len = 0;
22         int bit = 0;
23         int num = 0;
24         StringBuilder sb = new StringBuilder();
25         
26         String[] strArray = str.split(" ");
27         len = strArray.length;
28         
29         if(len >= 1024)
30         {
31             return "";
32         }
33         
34         for(int i = 0; i < len; i++)
35         {
36             num = Integer.parseInt(strArray[i]);
37             num /= 4;
38             bit = num % 2;
39 
40             sb.append(bit+" ");
41         }
42         
43         return sb.toString().substring(0, sb.length()-1);
44     }
45     
46 }