Recap - Validated Quantities

Part of the Logic & Flow section of Coddy's Kotlin journey. Lesson 55 of 63.

Challenge

Medium

Complete quantityTotal with parameters texts: List<String>. Trim and parse each string as Int. Ignore invalid or out-of-range values and negative quantities. Sum the remaining nonnegative quantities. The sum fits in Int.

Unless stricter bounds are stated above, collections contain at most 100 elements at each level, and integer arguments and integer collection values are between -1000 and 1000. Text supplied for parsing can include invalid or out-of-range representations as described.

Return a value of type Int. Keep the supplied input/output code. It reads scalar arguments one per line; a list starts with its count followed by its elements, and a map starts with its entry count followed by each key and value. Nested lists repeat the count-and-elements format for each row. The supplied main prints the return value followed by one newline. Lists use Kotlin's standard bracketed format; print no additional labels.

Try it yourself

fun quantityTotal(texts: List<String>): Int {
    // Write your solution here.
    return 0
}
fun main() {
    val textsCount = readln().toInt()
    val texts = mutableListOf<String>()
    for (i0 in 0 until textsCount) {
        val textsItem = readLine().orEmpty()
        texts.add(textsItem)
    }
    println(quantityTotal(texts))
}