From 3a7e2e235b3f328407e5c98325d1b7bcdca85139 Mon Sep 17 00:00:00 2001 From: Sugui Date: Fri, 1 Dec 2023 17:49:55 +0100 Subject: [PATCH] day 1 --- .gitignore | 2 + README.md | 2 + pom.xml | 74 ++ resources/input01.txt | 1000 ++++++++++++++++++++++++++++ src/main/java/sugui/Day01.java | 82 +++ src/test/java/sugui/Day01Test.java | 42 ++ 6 files changed, 1202 insertions(+) create mode 100644 .gitignore create mode 100644 README.md create mode 100644 pom.xml create mode 100644 resources/input01.txt create mode 100644 src/main/java/sugui/Day01.java create mode 100644 src/test/java/sugui/Day01Test.java diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..bcbfeee --- /dev/null +++ b/.gitignore @@ -0,0 +1,2 @@ +.vscode/ +target/ diff --git a/README.md b/README.md new file mode 100644 index 0000000..da2e1ed --- /dev/null +++ b/README.md @@ -0,0 +1,2 @@ +# aoc23 +Advent of Code 2023 diff --git a/pom.xml b/pom.xml new file mode 100644 index 0000000..cfac0e2 --- /dev/null +++ b/pom.xml @@ -0,0 +1,74 @@ + + + + 4.0.0 + + sugui + aoc23 + 1.0-SNAPSHOT + + aoc23 + + http://www.example.com + + + UTF-8 + 17 + + + + + junit + junit + 4.11 + test + + + + + + + + + maven-clean-plugin + 3.1.0 + + + + maven-resources-plugin + 3.0.2 + + + maven-compiler-plugin + 3.8.0 + + + maven-surefire-plugin + 2.22.1 + + + maven-jar-plugin + 3.0.2 + + + maven-install-plugin + 2.5.2 + + + maven-deploy-plugin + 2.8.2 + + + + maven-site-plugin + 3.7.1 + + + maven-project-info-reports-plugin + 3.0.0 + + + + + diff --git a/resources/input01.txt b/resources/input01.txt new file mode 100644 index 0000000..8a2eb54 --- /dev/null +++ b/resources/input01.txt @@ -0,0 +1,1000 @@ +51591twosix4dhsxvgghxq +425nine +llvmhjtr8nbbhrfone +lpbjvpbtdfvtxtdvkpjs7qrvddkzmjtlqtg +3sixnineseven +rfmsqbkms7three +33291six +oneonevstpxxrjpnine7six +75sevennine14mzqljsjfbb7two +three6two9jckvk +zprj8394threehczfkncntk +mkqtlrzmzfsix2ccqsnnxtwo4sevenxp9 +tdszrfzspthree2ttzseven5seven +two3fiveckrsjr 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+63threerjlgv6three +fivevvcmvrqfkdfshxjnfgsevensix3seven8 +21onebcsgvhtm6two +bnjpqcqdzmeight2gtjhqeight +1rsjbbhtkbbfourqzdhlone4eighttwo +6jpnnlbstgjfjdrdgnthreepgh49hdxqghr +five3oneonefrvnbnnlz +gbseven9five6 +nine2hdltdjdp73phzrjnonegx +3two3eightjszbfourkxbh5twonepr +5cfprzgxtf3465five diff --git a/src/main/java/sugui/Day01.java b/src/main/java/sugui/Day01.java new file mode 100644 index 0000000..0705034 --- /dev/null +++ b/src/main/java/sugui/Day01.java @@ -0,0 +1,82 @@ +package sugui; + +import java.io.BufferedReader; +import java.io.IOException; +import java.io.StringReader; +import java.nio.file.Files; +import java.nio.file.Path; +import java.nio.file.Paths; +import java.util.Collections; +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import java.util.function.IntPredicate; + +public class Day01 { + public static Path inputPath = Paths.get("resources/input01.txt"); + + public static Map> spelledDigitsMap = Map.of( + "1", List.of("1", "one"), + "2", List.of("2", "two"), + "3", List.of("3", "three"), + "4", List.of("4", "four"), + "5", List.of("5", "five"), + "6", List.of("6", "six"), + "7", List.of("7", "seven"), + "8", List.of("8", "eight"), + "9", List.of("9", "nine")); + + public static void main(String[] args) throws IOException { + var input = Files.readString(inputPath); + var firstResult = getFirstPuzzleResult(input); + var secondResult = getSecondPuzzleResult(input); + System.out.println("First result: " + firstResult); + System.out.println("Second result: " + secondResult); + } + + public static int getFirstPuzzleResult(String input) throws IOException { + IntPredicate isDigit = c -> Character.isDigit(c); + var bufferedReader = new BufferedReader(new StringReader(input)); + var result = bufferedReader.lines() + .map(line -> { + var digits = line + .chars() + .filter(isDigit) + .collect(StringBuilder::new, StringBuilder::appendCodePoint, StringBuilder::append) + .toString(); + var number = digits.isEmpty() ? 0 + : Integer.parseInt( + String.format( + "%c%c", + digits.charAt(0), + digits.charAt(digits.length() - 1))); + return number; + }) + .reduce(0, (a, b) -> a + b); + return result; + } + + public static int getSecondPuzzleResult(String input) throws IOException { + var bufferedReader = new BufferedReader(new StringReader(input)); + var result = bufferedReader.lines() + .map(line -> { + Map positions = new HashMap<>(); + spelledDigitsMap.forEach((digit, spelledDigits) -> { + spelledDigits.forEach(spelled -> { + int firstIndex = line.indexOf(spelled); + int lastIndex = line.lastIndexOf(spelled); + if (firstIndex != -1) { + positions.put(firstIndex, digit); + positions.put(lastIndex, digit); + } + }); + }); + int maxPosition = Collections.max(positions.keySet()); + int minPosition = Collections.min(positions.keySet()); + + int number = Integer.parseInt(positions.get(minPosition) + positions.get(maxPosition)); + return number; + }).reduce(0, (a, b) -> a + b); + return result; + } +} diff --git a/src/test/java/sugui/Day01Test.java b/src/test/java/sugui/Day01Test.java new file mode 100644 index 0000000..9cdfecf --- /dev/null +++ b/src/test/java/sugui/Day01Test.java @@ -0,0 +1,42 @@ +package sugui; + +import static org.junit.Assert.assertEquals; + +import java.io.IOException; + +import org.junit.Test; + +/** + * Unit test for simple App. + */ +public class Day01Test { + public static String firstBasicInput = """ + 1abc2 + pqr3stu8vwx + a1b2c3d4e5f + treb7uchet + """; + public static String secondBasicInput = """ + two1nine + eightwothree + abcone2threexyz + xtwone3four + 4nineeightseven2 + zoneight234 + 7pqrstsixteen + """; + public static int firstBasicResult = 142; + public static int secondBasicResult = 281; + + @Test + public void firstBasicCase() throws IOException { + int actualResult = Day01.getFirstPuzzleResult(firstBasicInput); + assertEquals(firstBasicResult, actualResult); + } + + @Test + public void secondBasicCase() throws IOException { + int actualResult = Day01.getSecondPuzzleResult(secondBasicInput); + assertEquals(secondBasicResult, actualResult); + } +}