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@@ -1,8 +1,20 @@
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+import com.sun.xml.internal.fastinfoset.util.CharArray;
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+
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import static java.lang.Character.isLowerCase;
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import static java.lang.Character.isUpperCase;
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import static java.lang.Character.toLowerCase;
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+import java.io.FileNotFoundException;
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+import java.util.Scanner;
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+import java.io.File;
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+import java.lang.StringBuilder;
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+import java.lang.String;
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+import java.lang.StringBuffer;
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+
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public class ROT13 {
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+ static int length = 0;
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+ static int start = 0;
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+ String cryptText = "";
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ROT13(Character cs, Character cf) {
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}
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@@ -12,21 +24,49 @@ public class ROT13 {
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24
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public String crypt(String text) throws UnsupportedOperationException {
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+ StringBuilder builder = new StringBuilder();
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+ char[] charText = text.toCharArray();
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+ for(char i: charText){
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+ char c = i;
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+ if(c>='a' && c<='m' || c>='A' && c<='M') c+=13;
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+ else if(c>='n' && c<='z' || c>='N' && c<='Z') c-=13;
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+ builder.append(c);
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+ }
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+
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15
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36
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- return "";
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+ return builder.toString();
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}
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public String encrypt(String text) {
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- return text;
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+
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+ return crypt(text);
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}
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public String decrypt(String text) {
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- return text;
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+
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+ return crypt(text);
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}
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49
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public static String rotate(String s, Character c) {
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+ length = s.length();
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+ start = s.indexOf(c);
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+ int rotate = length - start;
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+ return s.substring(start, length) + s.substring(0, start);
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55
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- return "";
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}
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57
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+ public String encryptFile(String filename){
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+ StringBuilder builder = new StringBuilder();
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+ File file = new File(filename);
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+ try (Scanner scanner = new Scanner (file)){
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+ while (scanner.hasNextLine()){
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+ String line = scanner.nextLine();
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+ String xo = this.encrypt(line);
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+ builder.append(xo+"/n");
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+ }
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+ } catch (FileNotFoundException e){
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+ e.printStackTrace();
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+ }
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+ return builder.toString();
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+ }
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}
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