到目前为止,这是我的代码。我需要运行代码的编码部分5次,然后解码编码相同的次数。我想出了如何对消息进行编码,但现在我无法弄清楚如何通过代码运行“编码”或“解码”变量以加强消息。
public class Codes
{
/**
* Encode and decode a message using a key of values stored in
* a queue.
*/
public static void main(String[] args)
{
int[] key = {7, 6, 5, 2, 8, 5, 8, 6, 4, 1};
Integer keyValue;
String encoded = "", decoded = "";
String message = "Queues are useful for encoding messages.";
Queue<Integer> encodingQueue = new LinkedList<Integer>();
Queue<Integer> decodingQueue = new LinkedList<Integer>();
// load key queues
for (int scan = 0; scan < key.length; scan++)
{
encodingQueue.add(key[scan]);
decodingQueue.add(key[scan]);
}
// encode message
for (int scan = 0; scan < message.length(); scan++)
{
keyValue = encodingQueue.remove();
encoded += (char) (message.charAt(scan) + keyValue);
encodingQueue.add(keyValue);
}
System.out.println ("Encoded Message:\n" + encoded + "\n");
// decode message
for (int scan = 0; scan < encoded.length(); scan++)
{
keyValue = decodingQueue.remove();
decoded += (char) (encoded.charAt(scan) - keyValue);
decodingQueue.add(keyValue);
}
System.out.println ("Decoded Message:\n" + decoded);
}
}
截至目前我正在接收此输出:
Encoded Message:
X{jwmx(gvf'{xgnzt&jpy&jpktlorh'sju{fokw/
Decoded Message:
Queues are useful for encoding messages.
为了完成这个程序,我需要输出看起来像这样:
Encoded Message 1: X{jwmx(gvf'{xgnzt&jpy&jpktlorh'sju{fokw/
Encoded Message 2: _?oyu}0mzg.?}iv•|,nq?,orsytuvi.yow?kwq{0
Encoded Message 3: f?t{}?8s~h5??k~??2rr?2tt{~|{zj5•ty?p•w•1
Encoded Message 4: m?y}??@y?i<??m???8vs?8yv????~k<?y{?u?}?2
Encoded Message 5: t?~•??H•?jC??o???>zt?>~x?????lC?~}?z???3
Decoded Message 5: m?y}??@y?i<??m???8vs?8yv????~k<?y{?u?}?2
Decoded Message 4: f?t{}?8s~h5??k~??2rr?2tt{~|{zj5•ty?p•w•1
Decoded Message 3: _?oyu}0mzg.?}iv•|,nq?,orsytuvi.yow?kwq{0
Decoded Message 2: X{jwmx(gvf'{xgnzt&jpy&jpktlorh'sju{fokw/
Decoded Message 1: Queues are useful for encoding messages.
我估计为了实现这一点,我需要使用循环来通过程序运行“编码”和“解码”变量。但是我无法弄清楚如何实现这一目标。
答案 0 :(得分:1)
如果您为encode()
和decode()
操作使用单独的函数,这会更容易:
class Codes {
public static void main(String[] args) {
...
}
private static String encode(String plaintext, Queue<Integer> encodingQueue) {
...
}
private static String decode(String ciphertext, Queue<Integer> decodingQueue) {
...
}
}
这有帮助吗?