Fork and clone this repo.

In the Question Class you will find an array of Question.

Create a tableView and populate it with the Questions.

Create a DetailViewController with a label and a pickerView. The label for the question and the picker view for the possible answers.

Checkout this little tutorial on UIPickerView

http://sourcefreeze.com/ios-uipickerview-example-using-swift/

Code it so that the user is nofified if they get the answer right or wrong.

Create a SettingsViewController with 2 segmentedControlls and another pickerView to allow the user to filter the results by difficulty, type and category.

Create Settings Class with static variables that will save your currentSettings.

Have your Settings update when the user selects

Add a Statistics class with static variables that keep track of right and wrong answers.

Create a custom TableViewCell so that all of the question is displayed and not cut off.