Migrate to gradle

advent-of-code-2023/01/part-1/main.kt

@@ -1,23 +0,0 @@
-package main
-
-import java.io.File
-
-fun main() {
-    var sum = 0
-    File("../input.txt").forEachLine{
-        var firstDigit = ""
-        var lastDigit = ""
-
-        for (c in it) {
-            if (c.isDigit()) {
-                lastDigit = c.toString()
-                if (firstDigit == "") {
-                    firstDigit = c.toString()
-                }
-            }
-        }
-
-        sum += (firstDigit + lastDigit).toInt()
-    }
-    println(sum)
-}

advent-of-code-2023/01/part-2/main.kt

@@ -1,39 +0,0 @@
-package main
-
-import java.io.File
-
-fun main() {
-    var sum = 0
-    File("../input.txt").forEachLine{
-        var firstDigit = ""
-        var lastDigit = ""
-
-        for (c in replaceStrWithDigits(it)) {
-            if (c.isDigit()) {
-                lastDigit = c.toString()
-                if (firstDigit == "") {
-                    firstDigit = c.toString()
-                }
-            }
-        }
-
-        sum += (firstDigit + lastDigit).toInt()
-    }
-    println(sum)
-}
-
-fun replaceStrWithDigits(line: String): String {
-    var s = line
-    var words = arrayOf("one", "two", "three", "four", "five", "six", "seven", "eight", "nine")
-    var i = 0
-    while (i < s.length) {
-        for (w in words.indices) {
-            if (s.slice(i..s.length-1).startsWith(words[w])) {
-                s = s.replaceRange(i, i + 1, (w + 1).toString())
-                break
-            }
-        }
-        i += 1
-    }
-    return s
-}

advent-of-code-2023/01/readme.md

@@ -1,62 +0,0 @@
-# Day 1: Trebuchet?!
-
-Something is wrong with global snow production, and you've been selected to take a look.
-The Elves have even given you a map; on it, they've used stars to mark the top fifty locations
-that are likely to be having problems.
-
-You've been doing this long enough to know that to restore snow operations,
-you need to check all fifty stars by December 25th.
-
-Collect stars by solving puzzles. Two puzzles will be made available on each day in the Advent calendar;
-the second puzzle is unlocked when you complete the first. Each puzzle grants one star. Good luck!
-
-You try to ask why they can't just use a weather machine ("not powerful enough")
-and where they're even sending you ("the sky") and why your map looks mostly blank
-("you sure ask a lot of questions") and hang on did you just say the sky
-("of course, where do you think snow comes from") when you realize that the Elves
-are already loading you into a trebuchet ("please hold still, we need to strap you in").
-
-As they're making the final adjustments, they discover that their calibration document
-(your puzzle input) has been amended by a very young Elf who was apparently just excited to show off
-her art skills. Consequently, the Elves are having trouble reading the values on the document.
-
-The newly-improved calibration document consists of lines of text;
-each line originally contained a specific calibration value that the Elves now need to recover.
-On each line, the calibration value can be found by combining the first digit and the last digit
-(in that order) to form a single two-digit number.
-
-For example:
-
-```
-1abc2
-pqr3stu8vwx
-a1b2c3d4e5f
-treb7uchet
-```
-
-In this example, the calibration values of these four lines are `12`, `38`, `15`, and `77`.
-Adding these together produces `142`.
-
-Consider your entire calibration document. What is the sum of all of the calibration values?
-
-## Part Two
-
-Your calculation isn't quite right. It looks like some of the digits are actually spelled out with letters:
-`one`, `two`, `three`, `four`, `five`, `six`, `seven`, `eight`, and `nine` also count as valid "digits".
-
-Equipped with this new information, you now need to find the real first and last digit on each line. For example:
-
-```
-two1nine
-eightwothree
-abcone2threexyz
-xtwone3four
-4nineeightseven2
-zoneight234
-7pqrstsixteen
-```
-
-In this example, the calibration values are `29`, `83`, `13`, `24`, `42`, `14`, and `76`.
-Adding these together produces `281`.
-
-What is the sum of all of the calibration values?

advent-of-code-2023/aoc-01/.gitignore

@@ -0,0 +1,43 @@
+.idea
+.gradle
+build/
+!gradle/wrapper/gradle-wrapper.jar
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### IntelliJ IDEA ###
+.idea/modules.xml
+.idea/jarRepositories.xml
+.idea/compiler.xml
+.idea/libraries/
+*.iws
+*.iml
+*.ipr
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store

advent-of-code-2023/aoc-01/build.gradle.kts

@@ -0,0 +1,27 @@
+plugins {
+    kotlin("jvm") version "1.9.0"
+    application
+}
+
+group = "org.example"
+version = "1.0-SNAPSHOT"
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    testImplementation(kotlin("test"))
+}
+
+tasks.test {
+    useJUnitPlatform()
+}
+
+kotlin {
+    jvmToolchain(8)
+}
+
+application {
+    mainClass.set("MainKt")
+}

advent-of-code-2023/aoc-01/gradle.properties

@@ -0,0 +1 @@
+kotlin.code.style=official

advent-of-code-2023/aoc-01/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.2-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

advent-of-code-2023/aoc-01/gradlew

@@ -0,0 +1,234 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
+
+APP_NAME="Gradle"
+APP_BASE_NAME=${0##*/}
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+# Collect all arguments for the java command;
+#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
+#     shell script including quotes and variable substitutions, so put them in
+#     double quotes to make sure that they get re-expanded; and
+#   * put everything else in single quotes, so that it's not re-expanded.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"

advent-of-code-2023/aoc-01/settings.gradle.kts

@@ -0,0 +1,12 @@
+pluginManagement {
+    repositories {
+        mavenCentral()
+        gradlePluginPortal()
+    }
+}
+
+plugins {
+    id("org.gradle.toolchains.foojay-resolver-convention") version "0.5.0"
+}
+
+rootProject.name = "aoc-01"

advent-of-code-2023/aoc-01/src/main/kotlin/Main.kt

@@ -0,0 +1,56 @@
+import java.io.File
+
+fun main(args: Array<String>) {
+    if (args.isEmpty()) {
+        println("Missing input file path")
+        return
+    }
+
+    val lines = File(args[0]).readLines()
+
+    println(getCalibrationValues(lines, false))
+    println(getCalibrationValues(lines, true))
+}
+
+fun getCalibrationValues(lines: List<String>, findWords: Boolean): Int {
+    var sum = 0
+
+    lines.forEach {
+        var firstDigit = ""
+        var lastDigit = ""
+
+        var s = it
+        if (findWords) {
+            s = replaceStrWithDigits(s)
+        }
+
+        for (char in s) {
+            if (char.isDigit()) {
+                lastDigit = char.toString()
+                if (firstDigit == "") {
+                    firstDigit = char.toString()
+                }
+            }
+        }
+
+        sum += (firstDigit + lastDigit).toInt()
+    }
+
+    return sum
+}
+
+fun replaceStrWithDigits(line: String): String {
+    var s = line
+    val words = arrayOf("one", "two", "three", "four", "five", "six", "seven", "eight", "nine")
+    var i = 0
+    while (i < s.length) {
+        for (w in words.indices) {
+            if (s.slice(i..<s.length).startsWith(words[w])) {
+                s = s.replaceRange(i, i + 1, (w + 1).toString())
+                break
+            }
+        }
+        i += 1
+    }
+    return s
+}

advent-of-code-2023/aoc-01/src/test/kotlin/MainKtTest.kt

@@ -0,0 +1,17 @@
+import java.io.File
+import kotlin.test.Test
+import kotlin.test.assertEquals
+
+class MainKtTest {
+    @Test
+    fun testGetCalibrationValues() {
+        val res = getCalibrationValues(File("test-1.txt").readLines(), false)
+        assertEquals(142, res)
+    }
+
+    @Test
+    fun testReplaceStringsAndGetCalibrationValues() {
+        val res = getCalibrationValues(File("test-2.txt").readLines(), true)
+        assertEquals(281, res)
+    }
+}