67442_Midterm_Playground (Contents)

Contents.swift

//: Possible solutions to parts 1 & 2 of the 67-442 midterm (2015)

import UIKit

// PART 1: Closures

var characterFirstAppearance = ["obi-wan": "ANH",
  "yoda": "ESB",
  "luke": "ANH",
  "windu": "TPM",
  "anakin": "TPM",
  "qui-gon": "TPM",
  "plo-koon": "TPM",
  "vader": "ANH",
  "sidious": "ROJ",
  "tyranus": "AOC",
  "maul": "TPM",
  "leia": "ANH",
  "han": "ANH",
  "chewbacca": "ANH",
  "ackbar": "ROJ",
  "antilles": "ANH"]

var movies = ["TPM": "The Phantom Menace", "AOC": "Attack of the Clones", "ROS": "Revenge of the Sith", "ANH": "A New Hope", "ESB": "Empire Strikes Back", "ROJ": "Return of the Jedi"]

var rebels = ["leia", "luke", "han", "chewbacca", "ackbar", "antilles"]

var sith = ["vader", "ventress", "sidious", "tyranus", "plagueis", "maul"]

var jedi = ["obi-wan", "yoda", "luke", "windu", "anakin", "qui-gon", "sifo-dyas", "ahsoka", "plo-koon"]


struct Character {
  var name: String
  var firstAppeared: String
  
  init(name: String, firstAppeared: String){
    self.name = name
    self.firstAppeared = firstAppeared
  }
}

var arrayCharacters = map(characterFirstAppearance){ Character(name: $0, firstAppeared: $1) }
arrayCharacters

var jediRebels = jedi.filter{contains(rebels, $0)}
//var jediRebels = jedi.filter{rebels.contains($0)}
jediRebels

//var sithNotAppearing = sith.filter{!contains(arrayCharacters.map{$0.name}, $0)}
var sithNotAppearing = sith.filter{!contains(Array(characterFirstAppearance.keys), $0)}
sithNotAppearing

var sithList = ", ".join(sithNotAppearing)
sithList

var firstInANH = arrayCharacters.filter({$0.firstAppeared == "ANH"}).map{$0.name}
firstInANH.sort(<)

// -----------------
// PART 2: Optionals

var capitol: String?
var ship: String? = "Millennium Falcon"
var planets: [String]? = ["Dagobah", "Endor", "Naboo", "Alderaan", "Tatooine"]

var s1 = "The Galatic Empire is on the planet \(capitol)"
var s2 = "Han Solo's ship is called \(ship)"
var s3 = "Yoda lived on \(planets!.first)"
//var s3 = "Yoda lived on \(planets!.first!)"

These contents can be added to an Xcode playground. Note that first appearance is order in which movies were produced, not the story's chronological order.