How to find the sum of the digits in kotlin

Question

fun main(args: Array<String>) {
    sumOfDigits("12345");
}

fun sumOfDigits(n: String) {
    val arr = n.toList()
    val arrOfInt = arr.map{ it.toString().toInt() }

    print(arrOfInt.sum())
}

My task is to find the sum of the digit and also the average as:

Sample Output:
12345

15 3.00

I am confused on how to code this. Can anybody please give me the easy and alternative code to the above.

question from:https://stackoverflow.com/questions/65897492/how-to-find-the-sum-of-the-digits-in-kotlin

Answer 1

 private fun sumAndAvgOfDigits(n: String) {
    val arrOfInt= n.map {"$it".toInt()}
    print("${arrOfInt.sum()} ${arrOfInt.average()}")
}

@JvmStatic
fun main(args: Array<String>) {
    sumAndAvgOfDigits("12345")
}

Another solution:

private fun sumAndAvgOfDigits(n: String) {
    val arr = n.toList()
    val sum = arr.sumBy { "$it".toInt() }
    val avg = (sum.toDouble()/arr.size)
    print("$sum $avg")
}