Add day02 2020

2020/day02.py

@@ -0,0 +1,50 @@
+#!/usr/bin/python3
+"""
+Jour 02 du défi Advent Of Code pour l'année 2020
+"""
+
+def read_sample():
+    """récupère les entrées depuis le fichier texte correspondant"""
+    with open('inputs/day02.txt', 'r') as f:
+        sample = f.read().split('\n')
+    sample = [i for i in sample if i != '']
+    return sample
+
+def xor(a, b):
+    return (a or b) and not (a and b)
+
+def is_valid_part1(line):
+    crit, password = line.split(":")
+    number, letter = crit.split(" ")
+    mini, maxi = number.split("-")
+    return int(mini) <= password.count(letter) <= int(maxi)
+
+def is_valid_part2(line):
+    crit, password = line.split(":")
+    number, letter = crit.split(" ")
+    pos1, pos2 = number.split("-")
+    password = password[1:]
+    return xor(password[int(pos1)-1] == letter, password[int(pos2)-1] == letter)
+
+def part1(sample):
+    """Partie 1 du défi"""
+    count = 0
+    for password in sample:
+        if is_valid_part1(password):
+            count += 1
+    return count
+
+def part2(sample):
+    """Partie 2 du défi"""
+    count = 0
+    for password in sample:
+        if is_valid_part2(password):
+            count += 1
+    return count
+
+
+def main():
+    """Fonction principale"""
+    sample = read_sample()
+    print(f"part1: {part1(sample)}")
+    print(f"part2: {part2(sample)}")