Enumerations lab

Fork and clone this repo. On your fork, answer and commit the follow questions. When you are finished, submit the link to your repo on Canvas.

Question 1

a) Define an enumeration called iOSDeviceType with member values iPhone, iPad, iWatch. Create a variable called myDevice and assign it one member value.

b) Adjust your code above so that iPhone and iPad have associated values of type String which represents the model number, eg: iPhone("6 Plus"). Use a switch case and let syntax to print out the model number of each device.

Question 2

a) Write an enum called Shape and give it cases for triangle, rectangle, square, pentagon, and hexagon.

b) Write a method inside Shape that returns how many sides the shape has. Create a variable called myFavoritePolygon and assign it to one of the shapes above, then print out how many sides it has.

c) Re-write Shape so that each case has an associated value of type Int that will represent the length of the sides (assume the shapes are regular polygons so all the sides are the same length) and write a method inside that returns the perimeter of the shape.

Question 3

Write an enum called OperatingSystem and give it cases for windows, mac, and linux. Create an array of 10 OperatingSystem objects where each one is set to a random operating system. Then, iterate through the array and print out a message depending on the operating system.

Question 4

You are working on a game in which your character is exploring a grid-like map. You get the original location of the character and the steps he will take.

A step .up will increase the y coordinate by 1.
A step .down will decrease the y coordinate by 1.
A step .right will increase the x coordinate by 1.
A step .left will decrease the x coordinate by 1.
Print the final location of the character after all the steps have been taken.

enum Direction {
    case up
    case down
    case left
    case right
}

var location = (x: 0, y: 0)
var steps: [Direction] = [.up, .up, .left, .down, .left]

// your code here

Question 5

a) Define an enumeration named HandShape with three members: .rock, .paper, .scissors.

b) Define an enumeration named MatchResult with three members: .win, .draw, .lose.

c) Write a function called match that takes two HandShapes and returns a MatchResult. It should return the outcome for the first player (the one with the first hand shape).

Hint: Rock beats scissors, paper beats rock, scissor beats paper

Question 6

a) You are given a CoinType enumeration which describes different coin values. Print the total value of the coins in the array moneyArray which contains tuples of type (quantity, CoinType).

enum CoinType: Int {
    case penny = 1
    case nickle = 5
    case dime = 10
    case quarter = 25
}

var moneyArray:[(Int,CoinType)] = [(10,.penny),
                                   (15,.nickle),
                                   (3,.quarter),
                                   (20,.penny),
                                   (3,.dime),
                                   (7,.quarter)]

// your code here

b) Write a method in the CoinType enum that returns an Int representing how many coins of that type you need to have a dollar. Then, create an instance of CoinType set to .nickle and use your method to print out how many nickels you need to have to make a dollar.

Question 7

a) Write an enum called DayOfWeek to represent the days of the week with a raw value of type String.

b) Given the array poorlyFormattedDays, write code that will produce an array of enums that match the days.

let poorlyFormattedDays = ["MONDAY", "wednesday", "Sunday", "monday", "Tuesday", "WEDNESDAY", "thursday", "SATURDAY", "tuesday", "FRIDAy", "Wednesday", "Monday", "Friday", "sunday"]

c) Write a method in DayOfWeek called isWeekend that determines whether a day is part of the weekend or not and write code to calculate how many week days appear in poorlyFormattedDays.

Question 8

a) Create an enum called MetroLine with cases for the colors of the metro train lines. Create an instance of MetroLine.

b) Modify your enum so that each case has an associated value of either Character or Int that will represent the train on that line. Create a new instance of MetroLine and give it an appropriate train letter or number.

c) Write code that prints the train letter or number of your instance of MetroLine.

Question 9

a) Think of your own example of something that can be modeled as an enum and write it. Remember that enums allow you to create instances of a defined list of cases.

b) Add a method to your enum.... try to have the method make sense.

Stephanie-Ramos/ios-enumerations-lab