day 4 2019 part 1 & part 2

2019/day-4/input

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+359282-820401

2019/day-4/python/main.py

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+import os
+import sys
+import re
+
+PATH = os.path.join(sys.path[0], '..', 'input')
+DATA = list(map(int, open(PATH, 'r').read().split('-')))
+
+def criteria(n):
+    digits = list(map(int, list(str(n))))
+    repeats = False
+    prev = digits[0]
+
+    for digit in digits[1:]:
+        if prev == digit:
+            repeats = True
+        if prev > digit:
+            return False
+        prev = digit
+    return repeats
+
+def rerepeats(n):
+    return 2 in [len(m[0]) for m in re.finditer(r'(\d)\1+', str(n))]
+
+passwords = [x for x in range(DATA[0], DATA[1]) if criteria(x)]
+print(len(passwords))
+passwords = [x for x in passwords if rerepeats(x)]
+print(len(passwords))