Advent of Code 2019

Post by chii » Mon, Dec 02, 2019, 3:18 AM UTC

melling wrote: post #56

melling wrote: post #27

Earlier quoted context omitted.

Learning new environments can be painful so it’s good it starts off easy. I’m trying to solve them with Swift Playgrounds on the iPad, for example. And I can’t figure out how to create a simple text file for the data.

I solved the first part using the examples. Swift is nice. func calcFuel(_ mass:Int) -> Int {mass / 3 - 2} let z0 = massList.map(calcFuel).reduce(0, +) or simply ... let z1 = massList.map({$0 / 3 - 2}).reduce(0, +) Any idea how to read the data on the iPad?

Post by ken » Mon, Dec 02, 2019, 3:20 AM UTC

teraflop wrote: post #32

jammygit wrote: post #28

These are daily programming puzzles? How long do they take on average? Also, I know somebody who is just starting out at coding. Would it be too hard for them? They are brand new, learning about loops

I completed the whole thing last year; the problems start out very easy, but get dramatically more challenging over the course of the month. Check out the statistics for how many people completed each problem in 2018: https://adventofcode.com/2018/stats The first few problems are approachable by pretty much anyone who understands how to do arithmetic, file I/O and basic flow control. Many of the later problems requir…

Post by melling » Mon, Dec 02, 2019, 3:45 AM UTC

chii wrote: post #71

melling wrote: post #56

Earlier quoted context omitted.

I solved the first part using the examples. Swift is nice. func calcFuel(_ mass:Int) -> Int {mass / 3 - 2} let z0 = massList.map(calcFuel).reduce(0, +) or simply ... let z1 = massList.map({$0 / 3 - 2}).reduce(0, +) Any idea how to read the data on the iPad?

i just copy/pasted the data into the source instead of dealing with IO.

   import UIKit

   let path = Bundle.main.url(forResource: "input01", withExtension: "txt")
   var text = try String(contentsOf: path!, encoding: .utf8)

   let massList:[Int] = text.components(separatedBy: .whitespacesAndNewlines).compactMap({Int($0)})

   let z1 = massList.map({$0 / 3 - 2}).reduce(0, +)
   print("\(z1)")

Post by rb808 » Mon, Dec 02, 2019, 4:04 AM UTC

aquova wrote: post #14

Many of the comments are about the event as a whole, but I'd like to commend the author for the day 1 puzzle, which I think is very cleverly written. Many people (including myself) use these as an opportunity to try out learning a new language, and the first puzzle does a good job of making sure you know enough basic operations for some of the puzzles coming up. The puzzle itself wasn't very difficult, you could do i…

Post by brantonb » Mon, Dec 02, 2019, 4:12 AM UTC

melling wrote: post #27

aquova wrote: post #14

Many of the comments are about the event as a whole, but I'd like to commend the author for the day 1 puzzle, which I think is very cleverly written. Many people (including myself) use these as an opportunity to try out learning a new language, and the first puzzle does a good job of making sure you know enough basic operations for some of the puzzles coming up. The puzzle itself wasn't very difficult, you could do i…

Learning new environments can be painful so it’s good it starts off easy. I’m trying to solve them with Swift Playgrounds on the iPad, for example. And I can’t figure out how to create a simple text file for the data.