74 lines
2.5 KiB
EmacsLisp
74 lines
2.5 KiB
EmacsLisp
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#!/usr/bin/env -S emacs --script
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;; -*- lexical-binding: t; -*-
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;; Copyright (C) 2022
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;; This program is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; This program is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with this program. If not, see <https://www.gnu.org/licenses/>.
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(add-to-list 'load-path default-directory)
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(require 'cl-lib)
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(require 'ert)
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(require 'advent-of-code)
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(defun -all-different? (items)
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(cl-loop for (item . rest) on items
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if (seq-contains rest item)
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return nil
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finally (return t)))
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(defun -part-1 (input)
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(cl-loop for (a b c d) on (string-to-list input)
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for x from 0
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while d
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if (-all-different? (list a b c d))
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return (+ x 4)))
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(defun -part-2 (input)
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(cl-loop for (a b c d e f g h i j k l m n) on (string-to-list input)
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for x from 0
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while d
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if (-all-different? (list a b c d e f g h i j k l m n))
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return (+ x 14)))
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(ert-deftest -test-part-1-examples ()
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(should (equal (-part-1 "mjqjpqmgbljsphdztnvjfqwrcgsmlb") 7))
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(should (equal (-part-1 "bvwbjplbgvbhsrlpgdmjqwftvncz") 5))
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(should (equal (-part-1 "nppdvjthqldpwncqszvftbrmjlhg") 6))
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(should (equal (-part-1 "nznrnfrfntjfmvfwmzdfjlvtqnbhcprsg") 10))
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(should (equal (-part-1 "zcfzfwzzqfrljwzlrfnpqdbhtmscgvjw") 11)))
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(ert-deftest -test-part-1 ()
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(should (equal (-part-1 (car (aoc-read-file-lines "input.txt"))) 1794)))
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(ert-deftest -test-part-2-examples ()
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(should (equal (-part-2 "mjqjpqmgbljsphdztnvjfqwrcgsmlb") 19))
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(should (equal (-part-2 "bvwbjplbgvbhsrlpgdmjqwftvncz") 23))
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(should (equal (-part-2 "nppdvjthqldpwncqszvftbrmjlhg") 23))
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(should (equal (-part-2 "nznrnfrfntjfmvfwmzdfjlvtqnbhcprsg") 29))
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(should (equal (-part-2 "zcfzfwzzqfrljwzlrfnpqdbhtmscgvjw") 26)))
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(ert-deftest -test-part-2 ()
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(should (equal (-part-2 (car (aoc-read-file-lines "input.txt"))) 2851)))
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(when noninteractive
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(ert-run-tests-batch))
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;; Code
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;; Local Variables:
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;; read-symbol-shorthands: (("-" . "advent-of-code-day-6-") ("aoc-" . "advent-of-code-"))
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;; End:
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