"create the bskkimm.py

Author: bskkimm

valid-palindrome/bskkimm.py

@@ -0,0 +1,22 @@
+class Solution(object):
+    def isPalindrome(self, s):
+        """
+        :type s: str
+        :rtype: bool
+        """
+        only_al_nu = []
+        
+        # "2 man, a plan, a canal: Panam2"
+        # 1. Delete non-alphanumeric elements and space
+        for cha in s:
+            if cha.isalpha() or cha.isnumeric():
+                if cha.isalpha():
+                    cha = cha.lower()
+                only_al_nu.append(cha)
+        
+        # 2. extract the last and first elements and check if they are same
+        while len(only_al_nu) > 1:
+            if only_al_nu.pop() != only_al_nu.pop(0):
+                return False
+
+        return True