121 lines
2.9 KiB
Swift
121 lines
2.9 KiB
Swift
#if !hasFeature(Embedded)
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import Foundation
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#endif
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@main
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struct Day03 {
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static func run() {
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guard let input = realInput else {
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print("input sttring nil")
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return
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}
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print("Parsing...")
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let parsed = parseInput(input)
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print("Running Part 1...")
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part1(parsed)
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//print("Running Part 2...")
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//part2(parsed)
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print("Finished!")
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}
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typealias ParsedInput = [String]
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static func parseInput(_ input: String) -> ParsedInput {
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return input
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.split(whereSeparator: { $0.isNewline })
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.map({ String($0) })
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}
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static func part1(_ input: ParsedInput) {
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var sum = 0
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for line in input {
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var firstMax: Character = "0"
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var lastMax: Character = "0"
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for char in line.dropLast() {
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if char > firstMax {
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firstMax = char
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lastMax = "0"
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continue
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}
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if char > lastMax {
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lastMax = char
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}
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}
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if line.last! > lastMax {
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lastMax = line.last!
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}
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sum += Int("\(firstMax)\(lastMax)")!
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}
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print("Part 1: \(sum)")
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}
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static func part2(_ input: ParsedInput) {
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}
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#if hasFeature(Embedded)
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static func main() {
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gfxInitDefault()
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consoleInit(GFX_TOP, nil)
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guard romfsInit() == 0 else {
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print("Couldn't init RomFS")
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return
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}
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testInput = stringFromFile("romfs:/test.txt")
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realInput = stringFromFile("romfs:/input.txt")
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run()
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while aptMainLoop() {
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hidScanInput()
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let kDown = hidKeysDown()
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if kDown & KEY_START != 0 {
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break
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}
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gfxFlushBuffers()
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gfxSwapBuffers()
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}
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romfsExit()
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gfxExit()
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}
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static func stringFromFile(_ path: String) -> String? {
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let file = fopen(path, "r")
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var ret = ""
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var buf = [CChar](repeating: 0, count: 100)
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while fgets(&buf, 100, file) != nil {
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ret += String(cString: buf)
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}
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guard feof(file) != 0 else {
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print("Error reading file \(path)")
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return nil
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}
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while ret.first?.isNewline ?? false {
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ret.removeFirst()
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}
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while ret.last?.isNewline ?? false {
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ret.removeLast()
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}
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return ret
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}
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#else
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static func main() {
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testInput = try? String(contentsOfFile: "romfs/test.txt").trimmingCharacters(in: .whitespacesAndNewlines)
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realInput = try? String(contentsOfFile: "romfs/input.txt").trimmingCharacters(in: .whitespacesAndNewlines)
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run()
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}
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#endif
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}
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var testInput: String? = nil
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var realInput: String? = nil
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