Bloc Weekly Code Puzzle - Dreidel Dreidel (12/14/15)

dreidelgame.swift

// DREIDEL
// Chris Slowik
// 12/15/15
//
// (0) Nun - nothing happens
// (1) Gimel - you take the pot!
// (2) Hei - you take half the pot
// (3) Shin - you put a piece into the pot
//
// Create a function that given an array of dreidel rolls ordered
// from first to last (so rolls[0] is the first roll and rolls[rolls.length - 1] 
// is the last roll), the number of coins in your account, and 
// the number of coins in the pot, returns the number of coins left 
// in your account after the last roll.

import Foundation

let myRolls = ["Nun", "Nun", "Shin", "Gimel", "Shin"]

func playDreidel(rolls: [String], var coins: Int, var pot: Int) -> Int {
    for (_, roll) in rolls.enumerate() {
        switch roll {
        case "Gimel":
            coins += pot
            pot = 0
        case "Hei":
            pot = pot / 2
            coins += pot
        case "Shin":
            pot += 1
            coins -= 1
        default:
            break
        }
    }
    return coins
}

playDreidel(myRolls, coins: 10, pot: 20) //result: 29