Create is_palindrome.py (#1754)

* Create is_palindrome.py

* Update is_palindrome.py

* Update is_palindrome.py

Co-authored-by: Christian Clauss <cclauss@me.com>

strings/is_palindrome.py

@@ -0,0 +1,19 @@
+def is_palindrome(s):
+    """
+    Determine whether the string is palindrome
+    :param s:
+    :return: Boolean
+    >>> is_palindrome("a man a plan a canal panama".replace(" ", ""))
+    True
+    >>> is_palindrome("Hello")
+    False
+    """
+    return s == s[::-1]
+
+
+if __name__ == "__main__":
+    s = input("Enter string to determine whether its palindrome or not: ").strip()
+    if is_palindrome(s):
+        print("Given string is palindrome")
+    else:
+        print("Given string is not palindrome")