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September 2017 Update

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Ingy döt Net 2017-09-23 10:01:46 +02:00
parent bba7bfd280
commit ba8067c3b7
14570 changed files with 153136 additions and 63871 deletions
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54
Task/Rot-13/Java/rot-13.java
View file

@ -1,49 +1,33 @@
import java.io.*;
public class Rot13 {
public static void main(String[] args) {
BufferedReader in;
public static void main(String[] args) throws IOException {
if (args.length >= 1) {
for (String file : args) {
try {
in = new BufferedReader(new FileReader(file));
String line;
while ((line = in.readLine()) != null) {
System.out.println(convert(line));
}
} catch (IOException e) {
e.printStackTrace();
try (InputStream in = new BufferedInputStream(new FileInputStream(file))) {
rot13(in, System.out);
}
}
} else {
try {
in = new BufferedReader(new InputStreamReader(System.in));
String line;
while ((line = in.readLine()) != null) {
System.out.println(convert(line));
}
} catch (IOException e) {
e.printStackTrace();
}
rot13(System.in, System.out);
}
}
public static String convert(String msg) {
StringBuilder retVal = new StringBuilder();
for (char a : msg.toCharArray()) {
if (a >= 'A' && a <= 'Z') {
a += 13;
if (a > 'Z') {
a -= 26;
}
} else if (a >= 'a' && a <= 'z') {
a += 13;
if (a > 'z') {
a -= 26;
}
}
retVal.append(a);
private static void rot13(InputStream in, OutputStream out) throws IOException {
int ch;
while ((ch = in.read()) != -1) {
out.write(rot13((char) ch));
}
return retVal.toString();
}
private static char rot13(char ch) {
if (ch >= 'A' && ch <= 'Z') {
return (char) (((ch - 'A') + 13) % 26 + 'A');
}
if (ch >= 'a' && ch <= 'z') {
return (char) (((ch - 'a') + 13) % 26 + 'a');
}
return ch;
}
}