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| 1 | +{ |
| 2 | + "cells": [ |
| 3 | + { |
| 4 | + "cell_type": "markdown", |
| 5 | + "metadata": {}, |
| 6 | + "source": [ |
| 7 | + "# Advent of Code 2020\n", |
| 8 | + "\n", |
| 9 | + "[Website](https://adventofcode.com/2020/)" |
| 10 | + ] |
| 11 | + }, |
| 12 | + { |
| 13 | + "cell_type": "markdown", |
| 14 | + "metadata": {}, |
| 15 | + "source": [ |
| 16 | + "## Day 2\n", |
| 17 | + "\n", |
| 18 | + "### How many passwords are valid?" |
| 19 | + ] |
| 20 | + }, |
| 21 | + { |
| 22 | + "cell_type": "code", |
| 23 | + "execution_count": 26, |
| 24 | + "metadata": {}, |
| 25 | + "outputs": [ |
| 26 | + { |
| 27 | + "name": "stdout", |
| 28 | + "output_type": "stream", |
| 29 | + "text": [ |
| 30 | + "591\n" |
| 31 | + ] |
| 32 | + } |
| 33 | + ], |
| 34 | + "source": [ |
| 35 | + "import re\n", |
| 36 | + "\n", |
| 37 | + "valid = 0\n", |
| 38 | + "\n", |
| 39 | + "with open('day02-input.txt') as input_file:\n", |
| 40 | + " for line in input_file:\n", |
| 41 | + " pw = re.split(r'-|:? ', str.strip(line))\n", |
| 42 | + " matched = re.findall(pw[2], pw[3])\n", |
| 43 | + " if len(matched) >= int(pw[0]) and len(matched) <= int(pw[1]):\n", |
| 44 | + " # print(pw)\n", |
| 45 | + " valid = valid + 1\n", |
| 46 | + "\n", |
| 47 | + "print(valid)" |
| 48 | + ] |
| 49 | + }, |
| 50 | + { |
| 51 | + "cell_type": "markdown", |
| 52 | + "metadata": {}, |
| 53 | + "source": [ |
| 54 | + "### New validation rules" |
| 55 | + ] |
| 56 | + }, |
| 57 | + { |
| 58 | + "cell_type": "code", |
| 59 | + "execution_count": 53, |
| 60 | + "metadata": {}, |
| 61 | + "outputs": [ |
| 62 | + { |
| 63 | + "name": "stdout", |
| 64 | + "output_type": "stream", |
| 65 | + "text": [ |
| 66 | + "335\n" |
| 67 | + ] |
| 68 | + } |
| 69 | + ], |
| 70 | + "source": [ |
| 71 | + "import operator\n", |
| 72 | + "\n", |
| 73 | + "valid_pos = 0\n", |
| 74 | + "\n", |
| 75 | + "with open('day02-input.txt') as input_file:\n", |
| 76 | + " for line in input_file:\n", |
| 77 | + " pw = re.split(r'-|:? ', str.strip(line))\n", |
| 78 | + " pos0 = int(pw[0]) - 1\n", |
| 79 | + " pos1 = int(pw[1]) - 1\n", |
| 80 | + " ltr = pw[2]\n", |
| 81 | + " pw_str = pw[3]\n", |
| 82 | + " if operator.xor(pw_str[pos0] == ltr, pw_str[pos1] == ltr):\n", |
| 83 | + " valid_pos = valid_pos + 1\n", |
| 84 | + "\n", |
| 85 | + "print(valid_pos)" |
| 86 | + ] |
| 87 | + }, |
| 88 | + { |
| 89 | + "cell_type": "code", |
| 90 | + "execution_count": null, |
| 91 | + "metadata": {}, |
| 92 | + "outputs": [], |
| 93 | + "source": [] |
| 94 | + } |
| 95 | + ], |
| 96 | + "metadata": { |
| 97 | + "kernelspec": { |
| 98 | + "display_name": "Python 3", |
| 99 | + "language": "python", |
| 100 | + "name": "python3" |
| 101 | + }, |
| 102 | + "language_info": { |
| 103 | + "codemirror_mode": { |
| 104 | + "name": "ipython", |
| 105 | + "version": 3 |
| 106 | + }, |
| 107 | + "file_extension": ".py", |
| 108 | + "mimetype": "text/x-python", |
| 109 | + "name": "python", |
| 110 | + "nbconvert_exporter": "python", |
| 111 | + "pygments_lexer": "ipython3", |
| 112 | + "version": "3.8.1" |
| 113 | + } |
| 114 | + }, |
| 115 | + "nbformat": 4, |
| 116 | + "nbformat_minor": 4 |
| 117 | +} |
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