From 8072d84a5a71f65a867606aca8cbcab3932bf7fb Mon Sep 17 00:00:00 2001 From: Max Nuding Date: Fri, 3 Dec 2021 20:48:34 +0100 Subject: [PATCH] 03a --- .gitignore | 1 + Package.resolved | 16 - Package.swift | 7 +- Sources/aoc2021/03.swift | 64 ++ Sources/aoc2021/Resources/input/03.txt | 1000 ++++++++++++++++++++++++ Sources/aoc2021/main.swift | 12 +- 6 files changed, 1080 insertions(+), 20 deletions(-) delete mode 100644 Package.resolved create mode 100644 Sources/aoc2021/03.swift create mode 100644 Sources/aoc2021/Resources/input/03.txt diff --git a/.gitignore b/.gitignore index bb460e7..0780981 100644 --- a/.gitignore +++ b/.gitignore @@ -1,3 +1,4 @@ +.swiftpm/ .DS_Store /.build /Packages diff --git a/Package.resolved b/Package.resolved deleted file mode 100644 index e56059c..0000000 --- a/Package.resolved +++ /dev/null @@ -1,16 +0,0 @@ -{ - "object": { - "pins": [ - { - "package": "swift-collections", - "repositoryURL": "https://github.com/apple/swift-collections.git", - "state": { - "branch": null, - "revision": "48254824bb4248676bf7ce56014ff57b142b77eb", - "version": "1.0.2" - } - } - ] - }, - "version": 1 -} diff --git a/Package.swift b/Package.swift index 8bb086a..aeb472f 100644 --- a/Package.swift +++ b/Package.swift @@ -5,13 +5,14 @@ import PackageDescription let package = Package( name: "aoc2021", + platforms: [.macOS(.v12)], dependencies: [ // Dependencies declare other packages that this package depends on. // .package(url: /* package url */, from: "1.0.0"), - .package( + /*.package( url: "https://github.com/apple/swift-collections.git", .upToNextMajor(from: "1.0.0") - ) + )*/ ], targets: [ // Targets are the basic building blocks of a package. A target can define a module or a test suite. @@ -19,7 +20,7 @@ let package = Package( .executableTarget( name: "aoc2021", dependencies: [ - .product(name: "Collections", package: "swift-collections") + //.product(name: "Collections", package: "swift-collections") ], resources: [ .process("Resources"), diff --git a/Sources/aoc2021/03.swift b/Sources/aoc2021/03.swift new file mode 100644 index 0000000..0c5f654 --- /dev/null +++ b/Sources/aoc2021/03.swift @@ -0,0 +1,64 @@ +// +// File.swift +// +// +// Created by Max Nuding on 02.12.21. +// + +import Foundation +import AppKit + +struct Day03 { + let inputPath: String + + func run() { + let input = try! String(contentsOfFile: inputPath) + let commands = input + .components(separatedBy: .newlines) + .filter { !$0.isEmpty } + //.compactMap { MoveCommand(line: $0) } + runA(commands) + //runB(commands) + } + + func runA(_ commands: [String]) { + let neededForMajority = commands.count / 2 + let lastBitIndex = commands.first!.count + var countsOnes = [Int](repeating: 0, count: lastBitIndex) + for command in commands { + let m = command.map { Bool.init(digit: $0)! }.map { $0 ? 1 : 0 } + countsOnes.enumerated().forEach { (idx, elem) in + countsOnes[idx] += m[idx] + } + } + let dec = countsOnes.indices.reduce((gamma: 0, episolon: 0), { partialResult, idx in + let isOne = countsOnes[idx] > neededForMajority + let val = Int(truncating: NSDecimalNumber(decimal: pow(2, countsOnes.count - idx - 1))) + var (gamma, episolon) = partialResult + if isOne { + gamma += val + } else { + episolon += val + } + return (gamma, episolon) + }) + print(dec.episolon * dec.gamma)< + } + + func runB(_ commands: [String]) { + + } +} + +extension Bool { + init?(digit: Character) { + switch digit { + case "0": + self = false + case "1": + self = true + default: + return nil + } + } +} diff --git a/Sources/aoc2021/Resources/input/03.txt b/Sources/aoc2021/Resources/input/03.txt new file mode 100644 index 0000000..992c2fe --- /dev/null +++ b/Sources/aoc2021/Resources/input/03.txt @@ -0,0 +1,1000 @@ +011000110010 +111011101000 +110100110010 +011010101110 +111010100100 +100111111100 +110001110000 +000100100100 +000110101101 +101011100110 +110011000110 +111100101111 +000011010111 +001111100100 +100010101101 +101100000010 +001100001111 +001001001110 +100100110000 +000000011001 +000111001000 +101000110110 +110011010000 +101110111011 +111000000011 +101100110100 +111110001010 +001101001111 +100101011001 +010101111111 +111100111001 +010100111010 +111110100111 +100101110111 +110001001100 +110111001110 +011111011011 +011111010111 +001100101111 +110111011101 +000110010111 +001100000001 +111101100100 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ofType: ".txt")! let start = CFAbsoluteTimeGetCurrent() @@ -17,3 +18,12 @@ Day02(inputPath: input02).run() let end = CFAbsoluteTimeGetCurrent() let execTimeMs = round((end - start) * 1000.0 * 100.0) / 100.0 print("Finished in \(execTimeMs)ms") +*/ + +print("Starting day 03") +let input03 = Bundle.module.path(forResource: "03", ofType: ".txt")! +let start = CFAbsoluteTimeGetCurrent() +Day03(inputPath: input03).run() +let end = CFAbsoluteTimeGetCurrent() +let execTimeMs = round((end - start) * 1000.0 * 100.0) / 100.0 +print("Finished in \(execTimeMs)ms")