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(Another) Example of a Poor Code Challenge Question
"Here we have a dictionary of type [String: String] that contains a three letter country code as a key and that country's capital city as the associated value.
We also have three empty arrays, europeanCapitals, asianCapitals, and otherCapitals. The goal is to iterate through the dictionary and end up with just the names of the capital cities in the relevant array.
For example, after you execute the code you write, europeanCapitals will have the values ["Vaduz", "Brussels", "Sofia"] (not necessarily in that order).
To do this you're going to use a switch statement and switch on the key. For cases where the key is a European country, append the value (not the key!) to the europeanCapitals array. For keys that are Asian countries, append the value to asianCapitals and finally for the default case, append the values to otherCapitals.
I've already set up the for in loop for you so jump right in!"
This is an example of a poor question. The questioner assumes domain knowledge about geography, which researching to confirm would be a distraction from the task at hand. You would not see rubbish like this in a Microsoft Virtual Academy, Cisco NetAcademy, or even Khan Academy Course.
As someone who doesn't live in Asia, Europe, nor America, three letter acronyms like "BRA" and "BGR" mean nothing to me. It would have made more sense to provide reference collections of countries; use a 'pre-established domain', such as the aspects of Swift taught thus far; or even literally included the domain information required in the question instead. Although I could research this, it is a petty distraction from what I came here for, and I would expect better from a paid training service.