From d54f531694d8c07f5fdee064b064637b5fa4b135 Mon Sep 17 00:00:00 2001 From: augustin64 Date: Fri, 3 Dec 2021 16:59:04 +0100 Subject: [PATCH] Add day03 2021 --- 2021/day03.py | 70 +++ 2021/inputs/day03.txt | 1000 +++++++++++++++++++++++++++++++++++++++++ 2 files changed, 1070 insertions(+) create mode 100755 2021/day03.py create mode 100644 2021/inputs/day03.txt diff --git a/2021/day03.py b/2021/day03.py new file mode 100755 index 0000000..647d8a7 --- /dev/null +++ b/2021/day03.py @@ -0,0 +1,70 @@ +#!/usr/bin/python3 +""" +Jour 03 du défi Advent Of Code pour l'année 2021 +""" + +def read_sample(): + """récupère les entrées depuis le fichier texte correspondant""" + with open('inputs/day03.txt', 'r') as file: + sample = file.read().split('\n') + sample = [ i for i in sample if i != '' ] + return sample + +def bin_to_dec(binary): + """Converts a binary number to an int""" + binary = str(binary) + decimal = 0 + for i, _ in enumerate(binary): + decimal = decimal*2 + decimal += int(binary[i]) + return decimal + +def comm(sample, bit): + """Determines the most common bit in an array""" + mst_com = {"0":0, "1":0} + for i in sample: + mst_com[i[bit]] += 1 + if mst_com["0"] > mst_com["1"]: + return ("0", "1") + if mst_com["0"] < mst_com["1"]: + return ("1", "0") + return("1", "0") + +def part1(sample): + """Partie 1 du défi""" + number1 = "" + number2 = "" + for i in range(len(sample[0])): + a, b = comm(sample, i) + number1 += a + number2 += b + gamma_rate = bin_to_dec(number1) + epsilon_rate = bin_to_dec(number2) + return gamma_rate*epsilon_rate + + +def loop(oxygen, co2, bit): + """Fonction principale récursive du second défi""" + if len(oxygen) == 1 and len(co2) == 1: + return bin_to_dec(oxygen[0]) * bin_to_dec(co2[0]) + + mst_com, _ = comm(oxygen, bit) + _, lst_com = comm(co2, bit) + + if len(oxygen) > 1: + oxygen = [ i for i in oxygen if i[bit] == mst_com ] + if len(co2) > 1: + co2 = [ i for i in co2 if i[bit] == lst_com ] + + return loop(oxygen, co2, bit+1) + +def part2(sample): + """Partie 2""" + return loop(sample.copy(), sample.copy(), 0) + + +def main(): + """Fonction principale""" + sample = read_sample() + print(f"part1: {part1(sample)}") + print(f"part2: {part2(sample)}") diff --git a/2021/inputs/day03.txt b/2021/inputs/day03.txt new file mode 100644 index 0000000..7ab3dcf --- /dev/null +++ b/2021/inputs/day03.txt @@ -0,0 +1,1000 @@ +111110110111 +110011001101 +110100000011 +100011000101 +110010010000 +100110100101 +111000010101 +011110011001 +111001110111 +101001101001 +110001011001 +110110110100 +101010101100 +011010010010 +101101110000 +011101000111 +100100100100 +100101001111 +010101101011 +101101000001 +111111000100 +010110001000 +001111010010 +100010000100 +000110011001 +001111001000 +011101101111 +011001100101 +001001011111 +100011110001 +110010111000 +000101000010 +000011010100 +010011111000 +010101101100 +111110110101 +100011100100 +000100010010 +000111110111 +010110000111 +110110010101 +000011001011 +001100000101 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