Caesar cipher: Difference between revisions

Content added Content deleted

Inline

@@ Line 478: / Line 478: @@
 	public static String decode(String enc, int offset) {
-		return encode(enc, -1 * offset);
+		return encode(enc, -offset);
 	}
 	public static String encode(String enc, int offset) {
+		offset = offset % 26 + 26;
 		StringBuilder encoded = new StringBuilder();
-		for (Character i : enc.toLowerCase().toCharArray()) {
+		for (char i : enc.toLowerCase().toCharArray()) {
-			offset = offset % 26 + 26;
 			if (Character.isLetter(i)) {
-				int j = ((((int) i) - 97) + offset) % 26;
+				int j = (i - 'a' + offset) % 26;
-				if (j >= 0 && j <= 25) {
+				encoded.append((char) (j + 'a'));
-					encoded.append((char) (j + 97));
-				}
 			} else {
-				encoded.append((char) i);
+				encoded.append(i);
 			}
 		}