This commit is contained in:
Max Nuding 2021-12-04 11:08:13 +01:00
parent b0609897df
commit d341f9b45c
Signed by: phlaym
GPG Key ID: A06651BAB6777237
4 changed files with 116 additions and 1 deletions

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@ -6,7 +6,6 @@
//
import Foundation
import AppKit
struct Day03 {
let inputPath: String

87
Sources/aoc2021/04.swift Normal file
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@ -0,0 +1,87 @@
//
// File.swift
//
//
// Created by Max Nuding on 04.12.21.
//
import Foundation
struct Board {
var numbers: [[Int?]]
var hasWon = false
mutating func crossOf(num: Int) -> Bool {
for (rowNumber, row) in numbers.enumerated() {
if let colNumber = row.firstIndex(of: num) {
numbers[rowNumber][colNumber] = nil
//print("Found at: \(rowNumber),\(colNumber)")
return true
}
}
return false
}
mutating func checkHasWon() -> Bool {
//print("HasWon?: \(numbers)")
let foundInRows = numbers.contains { row in
row.allSatisfy { $0 == nil }
}
if foundInRows {
return true
}
let foundInColumns = numbers.indices.contains { columnIndex in
return numbers.allSatisfy { $0[columnIndex] == nil }
}
hasWon = foundInColumns
return hasWon
}
func calculateScore() -> Int {
numbers
.reduce([], +)
.compactMap { $0 }
.reduce(0, +)
}
}
struct Day04 {
let inputPath: String
func run() {
let input = try! String(contentsOfFile: inputPath)
var lines = input
.components(separatedBy: .newlines)
let inputNumbers = lines
.removeFirst()
.split(separator: ",")
.map { Int($0)! }
_ = lines.removeFirst() //empty seperator line
let boards = lines
.split(separator: "")
.map { boardLines in
Board(numbers: boardLines.map { $0.split(separator: " ").map { num in Int(num)! } })
}
var boardsA = boards
runA(boards: &boardsA, inputNumbers: inputNumbers)
}
func runA(boards: inout [Board], inputNumbers: [Int]) {
for inputNumber in inputNumbers {
//print("\nInput: \(inputNumber)")
for (idx, var board) in boards.enumerated() {
//print("Checking board: \(idx)")
if board.crossOf(num: inputNumber) && board.checkHasWon() {
print(board.calculateScore() * inputNumber)
return
}
boards[idx] = board
}
}
}
func runB(_ commands: [String]) {
}
}

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@ -0,0 +1,19 @@
7,4,9,5,11,17,23,2,0,14,21,24,10,16,13,6,15,25,12,22,18,20,8,19,3,26,1
22 13 17 11 0
8 2 23 4 24
21 9 14 16 7
6 10 3 18 5
1 12 20 15 19
3 15 0 2 22
9 18 13 17 5
19 8 7 25 23
20 11 10 24 4
14 21 16 12 6
14 21 17 24 4
10 16 15 9 19
18 8 23 26 20
22 11 13 6 5
2 0 12 3 7

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@ -20,6 +20,7 @@ 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()
@ -27,3 +28,12 @@ Day03(inputPath: input03).run()
let end = CFAbsoluteTimeGetCurrent()
let execTimeMs = round((end - start) * 1000.0 * 100.0) / 100.0
print("Finished in \(execTimeMs)ms")
*/
print("Starting day 04")
let input03 = Bundle.module.path(forResource: "04", ofType: ".txt")!
let start = CFAbsoluteTimeGetCurrent()
Day04(inputPath: input03).run()
let end = CFAbsoluteTimeGetCurrent()
let execTimeMs = round((end - start) * 1000.0 * 100.0) / 100.0
print("Finished in \(execTimeMs)ms")