day 1
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commit
3a7e2e235b
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.vscode/
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target/
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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>sugui</groupId>
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<artifactId>aoc23</artifactId>
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<version>1.0-SNAPSHOT</version>
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<name>aoc23</name>
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<!-- FIXME change it to the project's website -->
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<url>http://www.example.com</url>
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<properties>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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<maven.compiler.release>17</maven.compiler.release>
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</properties>
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<dependencies>
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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<version>4.11</version>
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<scope>test</scope>
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</dependency>
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</dependencies>
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<build>
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<pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
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<plugins>
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<!-- clean lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#clean_Lifecycle -->
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<plugin>
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<artifactId>maven-clean-plugin</artifactId>
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<version>3.1.0</version>
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</plugin>
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<!-- default lifecycle, jar packaging: see https://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_jar_packaging -->
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<plugin>
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<artifactId>maven-resources-plugin</artifactId>
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<version>3.0.2</version>
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</plugin>
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<plugin>
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<artifactId>maven-compiler-plugin</artifactId>
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<version>3.8.0</version>
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</plugin>
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<plugin>
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<artifactId>maven-surefire-plugin</artifactId>
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<version>2.22.1</version>
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</plugin>
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<plugin>
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<artifactId>maven-jar-plugin</artifactId>
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<version>3.0.2</version>
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</plugin>
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<plugin>
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<artifactId>maven-install-plugin</artifactId>
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<version>2.5.2</version>
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</plugin>
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<plugin>
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<artifactId>maven-deploy-plugin</artifactId>
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<version>2.8.2</version>
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</plugin>
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<!-- site lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#site_Lifecycle -->
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<plugin>
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<artifactId>maven-site-plugin</artifactId>
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<version>3.7.1</version>
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</plugin>
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<plugin>
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<artifactId>maven-project-info-reports-plugin</artifactId>
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<version>3.0.0</version>
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</plugin>
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</plugins>
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</pluginManagement>
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</build>
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</project>
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File diff suppressed because it is too large
Load Diff
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package sugui;
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import java.io.BufferedReader;
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import java.io.IOException;
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import java.io.StringReader;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.nio.file.Paths;
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import java.util.Collections;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.function.IntPredicate;
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public class Day01 {
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public static Path inputPath = Paths.get("resources/input01.txt");
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public static Map<String, List<String>> spelledDigitsMap = Map.of(
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"1", List.of("1", "one"),
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"2", List.of("2", "two"),
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"3", List.of("3", "three"),
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"4", List.of("4", "four"),
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"5", List.of("5", "five"),
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"6", List.of("6", "six"),
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"7", List.of("7", "seven"),
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"8", List.of("8", "eight"),
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"9", List.of("9", "nine"));
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public static void main(String[] args) throws IOException {
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var input = Files.readString(inputPath);
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var firstResult = getFirstPuzzleResult(input);
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var secondResult = getSecondPuzzleResult(input);
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System.out.println("First result: " + firstResult);
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System.out.println("Second result: " + secondResult);
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}
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public static int getFirstPuzzleResult(String input) throws IOException {
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IntPredicate isDigit = c -> Character.isDigit(c);
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var bufferedReader = new BufferedReader(new StringReader(input));
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var result = bufferedReader.lines()
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.map(line -> {
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var digits = line
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.chars()
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.filter(isDigit)
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.collect(StringBuilder::new, StringBuilder::appendCodePoint, StringBuilder::append)
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.toString();
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var number = digits.isEmpty() ? 0
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: Integer.parseInt(
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String.format(
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"%c%c",
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digits.charAt(0),
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digits.charAt(digits.length() - 1)));
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return number;
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})
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.reduce(0, (a, b) -> a + b);
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return result;
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}
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public static int getSecondPuzzleResult(String input) throws IOException {
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var bufferedReader = new BufferedReader(new StringReader(input));
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var result = bufferedReader.lines()
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.map(line -> {
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Map<Integer, String> positions = new HashMap<>();
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spelledDigitsMap.forEach((digit, spelledDigits) -> {
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spelledDigits.forEach(spelled -> {
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int firstIndex = line.indexOf(spelled);
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int lastIndex = line.lastIndexOf(spelled);
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if (firstIndex != -1) {
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positions.put(firstIndex, digit);
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positions.put(lastIndex, digit);
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}
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});
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});
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int maxPosition = Collections.max(positions.keySet());
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int minPosition = Collections.min(positions.keySet());
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int number = Integer.parseInt(positions.get(minPosition) + positions.get(maxPosition));
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return number;
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}).reduce(0, (a, b) -> a + b);
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return result;
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}
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}
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@ -0,0 +1,42 @@
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package sugui;
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import static org.junit.Assert.assertEquals;
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import java.io.IOException;
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import org.junit.Test;
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/**
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* Unit test for simple App.
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*/
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public class Day01Test {
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public static String firstBasicInput = """
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1abc2
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pqr3stu8vwx
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a1b2c3d4e5f
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treb7uchet
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""";
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public static String secondBasicInput = """
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two1nine
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eightwothree
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abcone2threexyz
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xtwone3four
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4nineeightseven2
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zoneight234
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7pqrstsixteen
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""";
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public static int firstBasicResult = 142;
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public static int secondBasicResult = 281;
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@Test
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public void firstBasicCase() throws IOException {
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int actualResult = Day01.getFirstPuzzleResult(firstBasicInput);
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assertEquals(firstBasicResult, actualResult);
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}
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@Test
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public void secondBasicCase() throws IOException {
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int actualResult = Day01.getSecondPuzzleResult(secondBasicInput);
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assertEquals(secondBasicResult, actualResult);
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}
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}
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