23 lines
721 B
Swift
23 lines
721 B
Swift
import Foundation
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func montyHall(doors: Int = 3, guess: Int, switch: Bool) -> Bool {
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guard doors > 2, guess > 0, guess <= doors else { fatalError() }
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let winningDoor = Int.random(in: 1...doors)
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return winningDoor == guess ? !`switch` : `switch`
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}
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var switchResults = [Bool]()
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for _ in 0..<1_000 {
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let guess = Int.random(in: 1...3)
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let wasRight = montyHall(guess: guess, switch: true)
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switchResults.append(wasRight)
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}
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let switchWins = switchResults.filter({ $0 }).count
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print("Switching would've won \((Double(switchWins) / Double(switchResults.count)) * 100)% of games")
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print("Not switching would've won \(((Double(switchResults.count - switchWins)) / Double(switchResults.count)) * 100)% of games")
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