diff --git a/DIRECTORY.md b/DIRECTORY.md
index 1fad287988c4..350764ec0042 100644
--- a/DIRECTORY.md
+++ b/DIRECTORY.md
@@ -360,6 +360,7 @@
   * [Dijkstra](graphs/dijkstra.py)
   * [Dijkstra 2](graphs/dijkstra_2.py)
   * [Dijkstra Algorithm](graphs/dijkstra_algorithm.py)
+  * [Dijkstra Alternate](graphs/dijkstra_alternate.py)
   * [Dinic](graphs/dinic.py)
   * [Directed And Undirected (Weighted) Graph](graphs/directed_and_undirected_(weighted)_graph.py)
   * [Edmonds Karp Multiple Source And Sink](graphs/edmonds_karp_multiple_source_and_sink.py)
@@ -936,6 +937,7 @@
   * [Not Gate](quantum/not_gate.py)
   * [Q Full Adder](quantum/q_full_adder.py)
   * [Quantum Entanglement](quantum/quantum_entanglement.py)
+  * [Quantum Random](quantum/quantum_random.py)
   * [Ripple Adder Classic](quantum/ripple_adder_classic.py)
   * [Single Qubit Measure](quantum/single_qubit_measure.py)
 
diff --git a/strings/is_palindrome.py b/strings/is_palindrome.py
index 4776a5fc29c4..5758af0cef9b 100644
--- a/strings/is_palindrome.py
+++ b/strings/is_palindrome.py
@@ -1,9 +1,8 @@
 def is_palindrome(s: str) -> bool:
     """
-    Determine whether the string is palindrome
-    :param s:
-    :return: Boolean
-    >>> is_palindrome("a man a plan a canal panama".replace(" ", ""))
+    Determine if the string s is a palindrome.
+
+    >>> is_palindrome("A man, A plan, A canal -- Panama!")
     True
     >>> is_palindrome("Hello")
     False
@@ -14,15 +13,15 @@ def is_palindrome(s: str) -> bool:
     >>> is_palindrome("Mr. Owl ate my metal worm?")
     True
     """
-    # Since Punctuation, capitalization, and spaces are usually ignored while checking
-    # Palindrome,  we first remove them from our string.
-    s = "".join([character for character in s.lower() if character.isalnum()])
+    # Since punctuation, capitalization, and spaces are often ignored while checking
+    # palindromes, we first remove them from our string.
+    s = "".join(character for character in s.lower() if character.isalnum())
     return s == s[::-1]
 
 
 if __name__ == "__main__":
-    s = input("Enter string to determine whether its palindrome or not: ").strip()
+    s = input("Please enter a string to see if it is a palindrome: ")
     if is_palindrome(s):
-        print("Given string is palindrome")
+        print(f"'{s}' is a palindrome.")
     else:
-        print("Given string is not palindrome")
+        print(f"'{s}' is not a palindrome.")