Add README and solution for day4

2019-12-07 12:53:43 +01:00
parent ffbe0f66a1
commit 40e0caa31a
4 changed files with 67 additions and 0 deletions
@@ -0,0 +1,15 @@
+from collections import Counter
+
+low = 152085
+high = 670283
+
+print(len(list( \
+            filter( \
+                lambda x: len(set(x)) != len(x) \
+                    and list(x) == sorted(x) \
+                    and 2 in set(Counter(x).values())\
+                , map(str,range(low,high+1)) \
+            ) \
+          ) \
+      ) \
+)