First Draft

src/AssessmentPartThree.java

@@ -16,8 +16,52 @@ public class AssessmentPartThree {
 		 // So if theChar='m' and theOffset is 3 the method will return 'p'
 		 // Lower case characters remain lower case, upper case remain upper case
 		 // Any other characters are returned unchanged
-		 
-		 return 'a';
+		
+			int ascii = (int)theChar;								//converts password char to ascii code to ensure it is part of the allowed character range
+			int offsetVal = 0;
+			
+	 
+			if (ascii >= 65 && ascii <= 90 || ascii >= 97 && ascii <=122)  			// deduces if the character is between a-z or A-Z
+			{
+				if ((theOffset < 0 && (ascii <= 65 - theOffset) && (ascii >= 65 - theOffset))
+				|| (theOffset < 0 && (ascii <= 97 - theOffset) && (ascii >= 97 - theOffset)))	// if the offset is negative, this accounts for the wraparound
+				{
+					offsetVal = ascii - 26 + theOffset;
+					theChar = (char)offsetVal;
+					return theChar;
+				}
+				
+				if ((theOffset < 0 &&  !(ascii <= 65 - theOffset && ascii >= 65 - theOffset) 
+				||(theOffset < 0 && !(ascii <= 97 - theOffset && ascii >= 97 - theOffset))))
+				{
+					offsetVal = ascii + theOffset;
+					theChar = (char)offsetVal;
+					return theChar;
+				}
+				
+				if ((theOffset > 0 && ascii >= 90 - theOffset && ascii <= 90 - theOffset) 
+				||(theOffset > 0 && ascii >= 122 - theOffset && ascii <= 122 - theOffset))
+				{
+					offsetVal = ascii - 26 + theOffset;
+					theChar = (char)offsetVal;
+					return theChar;
+				}
+				
+				if ((theOffset > 0 && !(ascii >= 90 - theOffset && ascii <= 90 - theOffset) 
+				||(theOffset > 0 && ! (ascii >= 122 - theOffset && ascii <= 122 - theOffset))))
+				{
+					offsetVal = ascii + theOffset;
+					theChar = (char)offsetVal;
+					return theChar;
+				}
+				
+			}
+			
+			else 
+				{
+				   	return theChar;
+				}
+			return theChar;
 	 }
 	 
 	 public String encryptedString(String theMessage, int theOffset)
@@ -25,8 +69,72 @@ public class AssessmentPartThree {
 		 // 06 - encryptedMessage
 		 // Complete this method so that it uses encryptedCharacter to 
 		 // return the encrypted version of theMessage using theOffset
+		 String message = "";
+		 
+		 for (int length = 0; length < theMessage.length(); length++) // for loop to count up through the word length
+			{
+			char theChar = theMessage.charAt(length);                      // selects the letter at the current char placement
+			String space = Character.toString(theChar);
+			if (space.equals(" "))
+			{ 
+			message = message + theChar;
+			continue;
+			}
+		 int ascii = (int)theChar;								//converts password char to ascii code to ensure it is part of the allowed character range
+			int offsetVal = 0;
+			
+			
+			if (ascii >= 65 && ascii <= 90 || ascii >= 97 && ascii <=122)  			// deduces if the character is between a-z or A-Z
+			{
+				if ((theOffset < 0 && (ascii < 65 - theOffset) && (ascii >= 65))
+				|| (theOffset < 0 && (ascii < 97 - theOffset) && (ascii >= 97)))	// if the offset is negative, this accounts for the wraparound
+				{
+					offsetVal = ascii + 26 + theOffset;
+					theChar = (char)offsetVal;
+					message = message + theChar;
+					continue;
+				}
+				
+				if ((theOffset < 0 &&  !(ascii < 65 - theOffset && ascii >= 65) 
+				||(theOffset < 0 && !(ascii < 97 - theOffset && ascii >= 97))))
+				{
+					offsetVal = ascii + theOffset;
+					theChar = (char)offsetVal;
+					message = message + theChar;
+					continue;
+				}
+				
+				if ((theOffset > 0 && ascii > 90 - theOffset && ascii <= 90) 
+				||(theOffset > 0 && ascii > 122 - theOffset && ascii <= 122))
+				{
+					offsetVal = ascii - 26 + theOffset;
+					theChar = (char)offsetVal;
+					message = message + theChar;
+					continue;
+				}
+				
+				if ((theOffset > 0 && !(ascii > 90 - theOffset && ascii <= 90) 
+				||(theOffset > 0 && ! (ascii > 122 - theOffset && ascii <= 122))))
+				{
+					offsetVal = ascii + theOffset;
+					theChar = (char)offsetVal;
+					message = message + theChar;
+					continue;
+				}
+				
+				if (!(ascii > 64 && ascii < 91) || !(ascii > 96 && ascii < 123)) 
+				{
+				message = message + theChar;
+				continue;
+				}
+			 theMessage = message;	
+			}
+			
+			
+			}
+		 return message;
+	 }	
+			
 		 
-		 return "Encryptred message";
 	 }
-	
-}
+	 
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