Data update

Task/Palindrome-detection/Rhovas/palindrome-detection-1.rhovas

@@ -0,0 +1,3 @@
+func isPalindromeReverse(string: String): Boolean {
+    return string == string.reverse();
+}

Task/Palindrome-detection/Rhovas/palindrome-detection-2.rhovas

@@ -0,0 +1,7 @@
+func isPalindromeChars(chars: List<String>): Boolean {
+    match (chars) {
+        []: return true;
+        [elem]: return true;
+        [first, middle*, last]: return first == last && isPalindromeChars(middle);
+    }
+}

Task/Palindrome-detection/Rhovas/palindrome-detection-3.rhovas

@@ -0,0 +1,15 @@
+func isPalindrome(string: String): Boolean {
+    return isPalindromeReverse(string) && isPalindromeChars(string.chars);
+}
+
+assert isPalindrome("");
+assert isPalindrome("f");
+assert isPalindrome("noon");
+assert isPalindrome("kayak");
+assert isPalindrome("step on no pets");
+assert !isPalindrome("palindrome");
+assert !isPalindrome("A man, a plan, a canal - Panama!"); //inexact
+
+assert isPalindrome("§★♖★§"); //single utf16 code points
+assert isPalindromeReverse("🗲"); //string reverse handles surrogates
+assert !isPalindromeChars("🗲".chars); //.chars splits surrogates into two chars