jubinjacob19

fun main(args: Array<String>) {
    if (args.count() == 0) {
        println("Please input a number")    
    } else {
        try {
            val n = args[0].toInt()
            val factorial = y<Int,Int> {f-> { n->
                            if (n == 0)  1
                            else n * f(n - 1)
                            } }