Data commit

Task/Palindrome-detection/Scala/palindrome-detection-1.scala

@@ -0,0 +1 @@
+  def isPalindrome(s: String): Boolean = (s.size >= 2) && s == s.reverse

Task/Palindrome-detection/Scala/palindrome-detection-2.scala

@@ -0,0 +1,5 @@
+  def isPalindromeSentence(s: String): Boolean =
+    (s.size >= 2) && {
+      val p = s.replaceAll("[^\\p{L}]", "").toLowerCase
+      p == p.reverse
+    }

Task/Palindrome-detection/Scala/palindrome-detection-3.scala

@@ -0,0 +1,9 @@
+import scala.annotation.tailrec
+
+  def isPalindromeRec(s: String) = {
+    @tailrec
+    def inner(s: String): Boolean =
+      (s.length <= 1) || (s.head == s.last) && inner(s.tail.init)
+
+    (s.size >= 2) && inner(s)
+  }

Task/Palindrome-detection/Scala/palindrome-detection-4.scala

@@ -0,0 +1,23 @@
+  // Testing
+  assert(!isPalindrome(""))
+  assert(!isPalindrome("z"))
+  assert(isPalindrome("amanaplanacanalpanama"))
+  assert(!isPalindrome("Test 1,2,3"))
+  assert(isPalindrome("1 2 1"))
+  assert(!isPalindrome("A man a plan a canal Panama."))
+
+  assert(!isPalindromeSentence(""))
+  assert(!isPalindromeSentence("z"))
+  assert(isPalindromeSentence("amanaplanacanalpanama"))
+  assert(!isPalindromeSentence("Test 1,2,3"))
+  assert(isPalindromeSentence("1 2 1"))
+  assert(isPalindromeSentence("A man a plan a canal Panama."))
+
+  assert(!isPalindromeRec(""))
+  assert(!isPalindromeRec("z"))
+  assert(isPalindromeRec("amanaplanacanalpanama"))
+  assert(!isPalindromeRec("Test 1,2,3"))
+  assert(isPalindromeRec("1 2 1"))
+  assert(!isPalindromeRec("A man a plan a canal Panama."))
+
+  println("Successfully completed without errors.")