[py] Port 2017_04

py/aoc/__init__.py

@@ -2,7 +2,7 @@ import sys
 import argparse
 from pathlib import Path
 
-from .y2017 import d01, d02, d03
+from .y2017 import d01, d02, d03, d04
 from .y2018 import d01, d02, d03, d04, d05, d06, d07, d08, d09, d10, d11
 from .y2020 import d10
 from .y2021 import d14
@@ -12,6 +12,7 @@ DAYS = {
     "2017_01": y2017.d01.solve,
     "2017_02": y2017.d02.solve,
     "2017_03": y2017.d03.solve,
+    "2017_04": y2017.d04.solve,
     "2018_01": y2018.d01.solve,
     "2018_02": y2018.d02.solve,
     "2018_03": y2018.d03.solve,

py/aoc/y2017/d04.py

@@ -0,0 +1,35 @@
+import collections
+
+# PART 1
+
+
+def load_phrases(inputstr):
+    phrases = []
+    for line in inputstr.splitlines():
+        phrase = line.split(" ")
+        phrases.append(phrase)
+    return phrases
+
+
+def is_valid(phrase):
+    return len(phrase) == len(set(phrase))
+
+
+def count(what, when):
+    return len(list(filter(when, what)))
+
+
+# PART 2
+
+
+def is_valid_2(phrase):
+    phrase = ["".join(sorted(word)) for word in phrase]
+    return len(phrase) == len(set(phrase))
+
+
+def solve(inputstr):
+    phrases = load_phrases(inputstr)
+    correct = count(phrases, is_valid)
+    print(f"Part 1: {correct}")
+    correct_2 = count(phrases, is_valid_2)
+    print(f"Part 2: {correct_2}")