From b636dd4c43dc5784eaf49e71a1eee72a2b642853 Mon Sep 17 00:00:00 2001 From: Ivan Date: Thu, 11 Jan 2024 18:05:07 +0500 Subject: [PATCH] Add partial solution for the 5th day of AoC --- .../src/main/kotlin/Solution05.kt | 89 +++++++ .../src/main/resources/day-05/input.txt | 252 ++++++++++++++++++ .../src/main/resources/day-05/test.txt | 33 +++ .../src/test/kotlin/Solution05Test.kt | 32 +++ 4 files changed, 406 insertions(+) create mode 100644 advent-of-code-2023/src/main/kotlin/Solution05.kt create mode 100644 advent-of-code-2023/src/main/resources/day-05/input.txt create mode 100644 advent-of-code-2023/src/main/resources/day-05/test.txt create mode 100644 advent-of-code-2023/src/test/kotlin/Solution05Test.kt diff --git a/advent-of-code-2023/src/main/kotlin/Solution05.kt b/advent-of-code-2023/src/main/kotlin/Solution05.kt new file mode 100644 index 0000000..55b4c43 --- /dev/null +++ b/advent-of-code-2023/src/main/kotlin/Solution05.kt @@ -0,0 +1,89 @@ +class Solution05(lines: List) { + private var seeds: MutableList = mutableListOf() + private var maps: MutableMap = mutableMapOf() + + init { + // Parse seeds + val (_, seedsStr) = lines[0].split(": ") + seeds.addAll(seedsStr.split(" ").map{it.toULong()}) + + // Parse all maps + var currentSrc = "" + for (line in lines.subList(2, lines.size)) { + if (line.isEmpty()) continue + + if (line.contains(" map:")) { + val (mapTitle, _) = line.split(" ") + val (src, dest) = mapTitle.split("-to-") + currentSrc = src + + if (!maps.containsKey(currentSrc)) { + maps[currentSrc] = Ranges(dest) + } + + continue + } + + val (destRangeStart, srcRangeStart, rangeLength) = line.split(" ") + maps[currentSrc]?.addRange( + srcRangeStart.toULong(), + destRangeStart.toULong(), + rangeLength.toULong(), + ) + } + } + + fun getLowestLocationNumber(): ULong { + return seeds + .map{convertSeedNumber(it, "location")} + .min() + } + + fun getLowestLocationNumberForRangeOfSeeds(): ULong { + val allSeeds: MutableSet = mutableSetOf() + + for (i in 0.. = mutableListOf() + + fun addRange(sourceRangeStart: ULong, destRangeStart: ULong, rangeLength: ULong) { + ranges.add(Range(sourceRangeStart, destRangeStart, rangeLength)) + } + + fun mapNumber(src: ULong): ULong { + for (range in ranges) { + if (src >= range.sourceRangeStart && src < range.sourceRangeStart + range.rangeLength) { + return range.destRangeStart + src - range.sourceRangeStart + } + } + + return src + } +} + +data class Range(val sourceRangeStart: ULong, val destRangeStart: ULong, val rangeLength: ULong) diff --git a/advent-of-code-2023/src/main/resources/day-05/input.txt b/advent-of-code-2023/src/main/resources/day-05/input.txt new file mode 100644 index 0000000..3d50c1c --- /dev/null +++ b/advent-of-code-2023/src/main/resources/day-05/input.txt @@ -0,0 +1,252 @@ +seeds: 432986705 28073546 1364097901 88338513 2733524843 234912494 3151642679 224376393 485709676 344068331 1560394266 911616092 3819746175 87998136 892394515 435690182 4218056486 23868437 848725444 8940450 + 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+soil-to-fertilizer map: +0 15 37 +37 52 2 +39 0 15 + +fertilizer-to-water map: +49 53 8 +0 11 42 +42 0 7 +57 7 4 + +water-to-light map: +88 18 7 +18 25 70 + +light-to-temperature map: +45 77 23 +81 45 19 +68 64 13 + +temperature-to-humidity map: +0 69 1 +1 0 69 + +humidity-to-location map: +60 56 37 +56 93 4 diff --git a/advent-of-code-2023/src/test/kotlin/Solution05Test.kt b/advent-of-code-2023/src/test/kotlin/Solution05Test.kt new file mode 100644 index 0000000..a5878af --- /dev/null +++ b/advent-of-code-2023/src/test/kotlin/Solution05Test.kt @@ -0,0 +1,32 @@ +import kotlin.test.Test +import kotlin.test.assertEquals + +class Solution05Test { + @Test + fun testGetLowestLocation() { + val text = ResourceReader().readFile("day-05/test.txt") + val res = Solution05(text).getLowestLocationNumber() + assertEquals(35UL, res) + } + + @Test + fun solvePart1() { + val text = ResourceReader().readFile("day-05/input.txt") + val res = Solution05(text).getLowestLocationNumber() + println(res) + } + + @Test + fun testGetLowestLocationForRangeOfSeeds() { + val text = ResourceReader().readFile("day-05/test.txt") + val res = Solution05(text).getLowestLocationNumberForRangeOfSeeds() + assertEquals(46UL, res) + } + + @Test + fun solvePart2() { + val text = ResourceReader().readFile("day-05/input.txt") + val res = Solution05(text).getLowestLocationNumberForRangeOfSeeds() + println(res) + } +}