Bubble Sort in Swift

//Bubble Sort Algorithm

func bubbleSort(inputData: inout [Int]) {
    var inputDataLength = inputData.count
    while inputDataLength != 0 {
        var newn = 0
        for forwardPointer in 1...inputDataLength - 1 {
            if (inputData[forwardPointer - 1] > inputData[forwardPointer]) {
                let temp = inputData[forwardPointer - 1]
                inputData[forwardPointer - 1] = inputData[forwardPointer]
                inputData[forwardPointer] = temp
                newn = forwardPointer
            }
        }
        inputDataLength = newn
    }
}