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iOS Swift Collections and Control Flow Control Flow With Conditional Statements Working With Switch Statements

Matthew Ingram
PLUS
Matthew Ingram
Courses Plus Student 4,718 Points

Need help with a Switch statement code change in Swift

var europeanCapitals: [String] = [] var asianCapitals: [String] = [] var otherCapitals: [String] = []

let world = [ "BEL": "Brussels", "LIE": "Vaduz", "BGR": "Sofia", "USA": "Washington D.C.", "MEX": "Mexico City", "BRA": "Brasilia", "IND": "New Delhi", "VNM": "Hanoi"]

for capitals in world{ // Enter your code below switch capitals{ case "BEL", "LIE", "BGR": europeanCapitals.append[world[capitals]] case "IND", "VNM": asianCapitals.append[world[capitals]] default: otherCapitals.append[world[capitals]] } // End code }

operators.swift
var europeanCapitals: [String] = []
var asianCapitals: [String] = []
var otherCapitals: [String] = []

let world = [
  "BEL": "Brussels", 
  "LIE": "Vaduz", 
  "BGR": "Sofia", 
  "USA": "Washington D.C.", 
  "MEX": "Mexico City", 
  "BRA": "Brasilia", 
  "IND": "New Delhi", 
  "VNM": "Hanoi"]

for capitals in world{
    // Enter your code below
    switch capitals{
    case "BEL", "LIE", "BGR": europeanCapitals.append[world[capitals]]
    case "IND", "VNM": asianCapitals.append[world[capitals]] 
    default: otherCapitals.append[world[capitals]]
    }
    // End code
}

2 Answers

David Papandrew
David Papandrew
8,386 Points

Hi Matthew,

A couple of things to consider:

1) The starter code in the challenge gives you a for loop that uses (key, value), so you will want to use that rather than create a new variable called "capitals"

2) Switch statement will switch off the key and then use the value to append to the proper array.

Here is the corrected code:

var europeanCapitals: [String] = []
var asianCapitals: [String] = []
var otherCapitals: [String] = []

let world = [
  "BEL": "Brussels", 
  "LIE": "Vaduz", 
  "BGR": "Sofia", 
  "USA": "Washington D.C.", 
  "MEX": "Mexico City", 
  "BRA": "Brasilia", 
  "IND": "New Delhi", 
  "VNM": "Hanoi"]

for (key, value) in world {
    // Enter your code below
    switch key {
    case "BEL", "LIE", "BGR": europeanCapitals.append(value)
    case "IND", "VNM": asianCapitals.append(value)
    default: otherCapitals.append(value)
    }
    // End code
}
Matthew Ingram
PLUS
Matthew Ingram
Courses Plus Student 4,718 Points

I knew it was something little like that thanks for the help!