Data update

Task/Caesar-cipher/Ballerina/caesar-cipher.ballerina

@@ -0,0 +1,32 @@
+import ballerina/io;
+
+function encrypt(string s, int key) returns string {
+    final int offset = key % 26;
+    if offset == 0 { return s; }
+    int d;
+    int[] chars = [];
+    foreach int c in s.toCodePointInts() {
+        if c >= 64 && c <= 90 {
+            d = c + offset;
+            if d > 90 { d -= 26; }
+        } else if c >= 97 && c <= 122 {
+            d = c + offset;
+            if d > 122 { d -= 26; }
+        } else {
+            d = c;
+        }
+        chars.push(d);
+    }
+    return checkpanic string:fromCodePointInts(chars);
+}
+
+function decrypt(string s, int key) returns string {
+    return encrypt(s, 26 - key);
+}
+
+public function main() {
+    string encoded = encrypt("Bright vixens jump; dozy fowl quack.", 8);
+    io:println(encoded);
+    string decoded = decrypt(encoded, 8);
+    io:println(decoded);
+}