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No commits in common. "2239760ce21e964181a343489a996076cc13b938" and "578058890352101ac1b0bc1192e048b0158a6e92" have entirely different histories.

5 changed files with 1 additions and 264 deletions

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@ -23,8 +23,7 @@ let package = Package(
.executable(name: "11", targets: ["11"]), .executable(name: "11", targets: ["11"]),
.executable(name: "12", targets: ["12"]), .executable(name: "12", targets: ["12"]),
.executable(name: "13", targets: ["13"]), .executable(name: "13", targets: ["13"]),
.executable(name: "14", targets: ["14"]), .executable(name: "14", targets: ["14"])
.executable(name: "15", targets: ["15"])
], ],
dependencies: [ dependencies: [
// Dependencies declare other packages that this package depends on. // Dependencies declare other packages that this package depends on.
@ -113,11 +112,5 @@ let package = Package(
name: "14", name: "14",
dependencies: [ .targetItem(name: "Runner", condition: nil) ] dependencies: [ .targetItem(name: "Runner", condition: nil) ]
) )
,
.executableTarget(
name: "15",
dependencies: [ .targetItem(name: "Runner", condition: nil),
.product(name: "Collections", package: "swift-collections")]
)
] ]
) )

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@ -1,134 +0,0 @@
//
// File.swift
//
//
// Created by Max Nuding on 15s.12.21.
//
import Foundation
import Runner
import Collections
typealias ThreatLevel = Int
struct Coord: Hashable, CustomStringConvertible {
let row: Int
let col: Int
var description: String { "(\(row), \(col))" }
func neighbors() -> [Coord] {
[
Coord(row: row-1, col: col),
Coord(row: row, col: col+1),
Coord(row: row+1, col: col),
Coord(row: row, col: col-1)
]
}
}
class Day15: Runnable {
let inputPath: String
var lastRow: Int = 0
var lastCol: Int = 0
var parts = [[ThreatLevel]]()
var neighbors = [Coord: [Coord]]()
required init(inputPath: String) {
self.inputPath = inputPath
}
public func run() {
let input = try! String(contentsOfFile: inputPath)
parts = input
.trimmingCharacters(in: .newlines)
.components(separatedBy: .newlines)
.map { Array($0) }
.map { ar in ar.map {c in ThreatLevel(c.description)!} }
lastRow = parts.count - 1
lastCol = (parts.first?.count ?? 0) - 1
var tmpParts = parts
for (rowNum, row) in tmpParts.enumerated() {
let newRow = [Int](0...4).flatMap { cr in
row
.map { rv in cr + rv }
.map { $0 > 9 ? $0 - 9 : $0 }
}
parts[rowNum] = newRow
}
tmpParts = parts
for num in 1...4 {
for i in tmpParts.indices {
let tr = tmpParts[i]
let ntr = tr.map { $0 + num }.map { $0 > 9 ? $0 - 9 : $0 }
parts.append(ntr)
}
}
lastRow = parts.count - 1
lastCol = (parts.first?.count ?? 0) - 1
// Distances to startNode
var totalThreatLevel = [Coord: ThreatLevel]()
var unvisited = Set(parts.enumerated().flatMap {row in
row.element.indices.map { col in
Coord(row: row.offset, col: col)
}
})
var threatLevelDistrubution = [ThreatLevel: Set<Coord>]()
let startNode = Coord(row: 0, col: 0)
totalThreatLevel[startNode] = 0
threatLevelDistrubution[Int.max] = unvisited
threatLevelDistrubution[Int.max]!.remove(startNode)
threatLevelDistrubution[0] = Set([startNode])
while let threatLevel = threatLevelDistrubution.keys.min() {
let currentNode = threatLevelDistrubution[threatLevel]!.first!
unvisited.remove(currentNode)
threatLevelDistrubution[threatLevel]!.remove(currentNode)
if threatLevelDistrubution[threatLevel]!.isEmpty {
threatLevelDistrubution.removeValue(forKey: threatLevel)
}
if neighbors[currentNode] == nil {
neighbors[currentNode] = currentNode
.neighbors()
.filter {
$0.col >= 0 && $0.col <= lastCol && $0.row >= 0 && $0.row <= lastRow
}
}
var adjacent = neighbors[currentNode]!
neighbors[currentNode] = adjacent
adjacent = adjacent
.filter {
unvisited.contains($0)
}
let currentThreatLevel = totalThreatLevel[currentNode, default: Int.max]
for a in adjacent {
let testCost = parts[a] + currentThreatLevel
let currentCost = totalThreatLevel[a, default: Int.max]
if currentCost > testCost {
totalThreatLevel[a] = testCost
threatLevelDistrubution[currentCost]!.remove(a)
threatLevelDistrubution[testCost, default: Set<Coord>()].insert(a)
if threatLevelDistrubution[currentCost]!.isEmpty {
threatLevelDistrubution.removeValue(forKey: currentCost)
}
}
}
}
print(totalThreatLevel[Coord(row: lastRow, col: lastCol)]!)
}
}
extension Array where Element == Array<Int> {
subscript(coord: Coord) -> Int {
get { self[coord.row][coord.col] }
set(newValue) {
self[coord.row][coord.col] = newValue
}
}
}

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@ -1,12 +0,0 @@
//
// File.swift
//
//
// Created by Max Nuding on 15.12.21.
//
import Foundation
import Runner
//Runner(target: Day15.self, day: "15", isTest: true).run()
Runner(target: Day15.self, day: "15", isTest: false).run()

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@ -1,10 +0,0 @@
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