A simple set of functions I wrote when having fun with algorithms

TFunWithAlgorithms.swift

//A function that could be called recursively to calculate the total of an integer array.

    func total(array:NSArray,index:Int,sum:Int) -> Int {
        if (index > (array.count - 1)) {
            return sum
        }else {
            let currentNumber:Int = array.objectAtIndex(index) as! Int
            let currentTotal:Int = sum + currentNumber
            return total(array, index: index + 1, sum: currentTotal)
        }
    }