Sha256: 7dec704183c3e48a9f1a4a940542bfee9b08510ced3ca09822d342628deb3545
Contents?: true
Size: 903 Bytes
Versions: 59
Compression:
Stored size: 903 Bytes
Contents
import Foundation
struct Grains {
enum GrainsError: Error {
case inputTooLow(String)
case inputTooHigh(String)
}
static func square(_ num: Int) throws -> UInt64 {
guard num >= 1 else {
let message = "Input[\(num)] invalid. Input should be between 1 and 64 (inclusive)"
throw GrainsError.inputTooLow(message)
}
guard num <= 64 else {
let message = "Input[\(num)] invalid. Input should be between 1 and 64 (inclusive)"
throw GrainsError.inputTooHigh(message)
}
let one: UInt64 = 1
let shift = UInt64(num - 1)
return one << shift
}
static var total: UInt64 {
let numbers = (1...64).map { $0 }
return numbers.reduce(UInt64(0)) {
guard let squared = try? square($1) else {return $0}
return $0 + squared
}
}
}
Version data entries
59 entries across 59 versions & 1 rubygems