add: Luhn algorithm

NitkarshChourasia · NitkarshChourasia · commit 5d0d76dc9ab6 · 2024-01-17T01:08:56.000+05:30
Luhn algorithm is mostly used for validation.
diff --git a/luhn_algorithm_for_credit_card_validation.py b/luhn_algorithm_for_credit_card_validation.py
@@ -5,6 +5,8 @@
 
 """
 
+# TODO: To make it much more better and succint
+
 
 def verify_card_number(card_number):
     sum_of_odd_digits = 0
