crypt done

Crypto/src/ROT13.java

@@ -1,32 +1,95 @@
+
 import static java.lang.Character.isLowerCase;
 import static java.lang.Character.isUpperCase;
 import static java.lang.Character.toLowerCase;
 
-public class ROT13  {
+import java.io.*;
+
+
+
+public class ROT13 {
+
+    private int shift;
 
-    ROT13(Character cs, Character cf) {
+
+    ROT13(Character cs, Character cf)  {
+
+       shift=cf-cs;
     }
 
     ROT13() {
+shift=0;
     }
+    //lets read a file ,encode it and write in
+
 
 
-    public String crypt(String text) throws UnsupportedOperationException {
 
-        return "";
+
+
+
+
+    public String crypt(String text) throws UnsupportedOperationException {
+        return decrypt(encrypt(text));
     }
 
     public String encrypt(String text) {
-        return text;
-    }
+        return shiftString(text, (char) (97 + shift));
+
+
+
+        }
+
+        public String decrypt (String text){
+            return shiftString(text, (char) (97 + 26 - shift));
+
+        }
+        public String shiftString(String text,Character c) {
+            int shift;
+            if (c >= 97 && c <= 122) {
+                shift = c - 97;
+            } else {
+                shift = c - 65;
+            }
+
+            StringBuffer result = new StringBuffer();
+            char[] charArr = text.toCharArray();
+            for (int i = 0; i < charArr.length; i++) {
+                if (charArr[i] <= 90 && charArr[i] >= 65) {
+                    charArr[i] = (char) ((charArr[i] + shift - 65) % 26 + 65);
+
+
+                }
+                if (charArr[i] <= 122 && charArr[i] >= 97) {
+                    charArr[i] = (char) ((charArr[i] + shift - 97) % 26 + 97);
+
+
+                }
+
+            }
+
+        return String.valueOf(charArr);
+        }
+
+        public static String rotate (String s, Character c){
+            String str="";
+            int l=s.indexOf(c);
+            for(int i=l; i<s.length();i++){
+                str=str+s.charAt(i);
+            }
+            for(int i=0;i<l;i++){
+                str=str+s.charAt(i);
+            }
+
+
+            return str;
+
+
+        }
+
+
 
-    public String decrypt(String text) {
-        return text;
-    }
 
-    public static String rotate(String s, Character c) {
 
-        return "";
-    }
 
-}
+        }

Crypto/src/ROT13Test.java

@@ -1,3 +1,5 @@
+
+
 import org.junit.Test;
 
 import static org.junit.Assert.*;
@@ -88,4 +90,5 @@ public void cryptTest2() {
         assertTrue(actual.equals(Q1));
     }
 
+
 }

SimpleCrypt.iml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module org.jetbrains.idea.maven.project.MavenProjectsManager.isMavenModule="true" type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_7">
+    <output url="file://$MODULE_DIR$/target/classes" />
+    <output-test url="file://$MODULE_DIR$/target/test-classes" />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/Crypto/src" isTestSource="true" />
+      <excludeFolder url="file://$MODULE_DIR$/target" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" scope="TEST" name="Maven: junit:junit:4.12" level="project" />
+    <orderEntry type="library" scope="TEST" name="Maven: org.hamcrest:hamcrest-core:1.3" level="project" />
+  </component>
+</module>

pom.xml

@@ -7,6 +7,26 @@
     <groupId>com.zipcodewilmington</groupId>
     <artifactId>SimpleCrypt</artifactId>
     <version>1.0-SNAPSHOT</version>
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <source>7</source>
+                    <target>7</target>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+    <dependencies>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>4.12</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
 
 
 </project>