add Task 305

regexp/Task305.py

@@ -0,0 +1,12 @@
+import re
+
+
+def divisable_by_two(string):
+    if string.isdigit() == True :
+        last = string[-1]
+        if string.startswith('-') | (len(string)>1 and string.startswith('0')):
+	        return False
+        else:
+            return bool(re.match(r"2|4|6|8|0", last))
+    else:
+	    return False