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

Su Deng
Su Deng
1,226 Points

how to append the values in a dictionary

i dont know how to start the switch statement nor do i know how to append the values in a dictionary to the array at the start

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

1 Answer

Jeff McDivitt
Jeff McDivitt
23,970 Points

Hi Su -

You need to start the switch statement by switching on the key in the dictionary. You then append using the normal append syntax

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 {
    switch key {
    case "BEL","BGR","LIE":
        europeanCapitals.append(value)
    case "IND" :
        asianCapitals.append(value)
    default:
        otherCapitals.append(value)
    }
}