This commit is contained in:
Max Nuding 2021-12-12 09:26:08 +01:00
parent 6ffaa01033
commit 5052110cb1
Signed by: phlaym
GPG Key ID: A06651BAB6777237
6 changed files with 172 additions and 5 deletions

View File

@ -20,7 +20,8 @@ let package = Package(
.executable(name: "08", targets: ["08"]),
.executable(name: "09", targets: ["09"]),
.executable(name: "10", targets: ["10"]),
.executable(name: "11", targets: ["11"])
.executable(name: "11", targets: ["11"]),
.executable(name: "12", targets: ["12"])
],
dependencies: [
// Dependencies declare other packages that this package depends on.
@ -92,9 +93,13 @@ let package = Package(
),
.executableTarget(
name: "11",
dependencies: [ .targetItem(name: "Runner", condition: nil) ]
),
.executableTarget(
name: "12",
dependencies: [
.targetItem(name: "Runner", condition: nil),
//.product(name: "Collections", package: "swift-collections"),
.product(name: "Collections", package: "swift-collections")
]
)
]

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@ -49,14 +49,14 @@ class Day11: Runnable {
.map { Array($0) }
.map { ar in ar.map {c in Int(c.description)!} }
for _ in 0..<100 {
var step = 0
while(flashed.count < numRows * numCols) {
flashed = Set<Coord>()
for row in octopuses.indices {
for col in octopuses[row].indices {
octopuses[row][col] += 1
}
}
for row in octopuses.indices {
for col in octopuses[row].indices {
let coord = Coord(row: row, col: col)
@ -66,8 +66,12 @@ class Day11: Runnable {
for flash in flashed {
octopuses[flash] = 0
}
step += 1
if step == 100 {
print(numFlashes)
}
}
print(numFlashes)
print("All flashing at step: \(step)")
}
func checkAndFlash(at coord: Coord) {

111
Sources/12/12.swift Normal file
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@ -0,0 +1,111 @@
//
// File.swift
//
//
// Created by Max Nuding on 12.12.21.
//
import Foundation
import Runner
import Collections
class Cave: Hashable, CustomStringConvertible, CustomDebugStringConvertible {
static func == (lhs: Cave, rhs: Cave) -> Bool { lhs.name == rhs.name }
func hash(into hasher: inout Hasher) {
hasher.combine(name)
}
var description: String { name }
var debugDescription: String { name }
let name: String
var connectedCaves = [Cave]()
var isBigCave: Bool
var isEnd: Bool
required init(name: String) {
self.name = name
self.isBigCave = name.first!.isUppercase
self.isEnd = name == "end"
}
}
class Path: Hashable, CustomStringConvertible {
static func == (lhs: Path, rhs: Path) -> Bool {
lhs.parts == rhs.parts
}
func hash(into hasher: inout Hasher) {
hasher.combine(parts)
}
var parts: [Cave]
private var partsSet: Set<Cave>
var description: String { parts.map {$0.description}.joined(separator: "->") }
required init(parts: [Cave]) {
self.parts = parts
partsSet = Set(parts)
}
func contains(cave: Cave) -> Bool { partsSet.contains(cave) }
}
class Day12: Runnable {
let inputPath: String
var caves = [String:Cave]()
required init(inputPath: String) {
self.inputPath = inputPath
}
public func run() {
let input = try! String(contentsOfFile: inputPath)
caves = input
.trimmingCharacters(in: .newlines)
.components(separatedBy: .newlines)
.reduce(into: [String:Cave](), { caves, line in
let caveConnection = line.components(separatedBy: "-")
let caveFromName = caveConnection.first!
let caveToName = caveConnection.last!
let from = caves[caveFromName] ?? Cave(name: caveFromName)
let to = caves[caveToName] ?? Cave(name: caveToName)
from.connectedCaves.append(to)
to.connectedCaves.append(from)
caves[caveFromName] = from
caves[caveToName] = to
})
var queue = Deque<Path>(minimumCapacity: 10000)
var visited = Set<Path>(minimumCapacity: 10000)
var numFinished = 0
var cave: Path? = Path(parts: [caves["start"]!])
queue.append(cave!)
while !queue.isEmpty {
cave = queue.popFirst()
if visited.contains(cave!) {
continue
}
//print("Current path: \(cave!)")
visited.insert(cave!)
cave!.parts.last!.connectedCaves
.filter { $0.isBigCave || !cave!.contains(cave: $0) }
.forEach {
if $0.isEnd {
numFinished += 1
//print("Finished: \(cave!.parts)->end")
return
}
var newParts = cave!.parts
newParts.append($0)
queue.append(Path(parts: newParts))
}
}
print(numFinished)
}
}

12
Sources/12/main.swift Normal file
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@ -0,0 +1,12 @@
//
// File.swift
//
//
// Created by Max Nuding on 05.12.21.
//
import Foundation
import Runner
//Runner(target: Day12.self, day: "12", isTest: true).run()
Runner(target: Day12.self, day: "12", isTest: false).run()

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@ -0,0 +1,25 @@
start-kc
pd-NV
start-zw
UI-pd
HK-end
UI-kc
pd-ih
ih-end
start-UI
kc-zw
end-ks
MF-mq
HK-zw
LF-ks
HK-kc
ih-HK
kc-pd
ks-pd
MF-pd
UI-zw
ih-NV
ks-HK
MF-kc
zw-NV
NV-ks

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@ -0,0 +1,10 @@
dc-end
HN-start
start-kj
dc-start
dc-HN
LN-dc
HN-end
kj-sa
kj-HN
kj-dc