Recap - Length Leaderboard

Part of the Logic & Flow section of Coddy's Kotlin journey. Lesson 40 of 63.

Challenge

Medium

Complete groupLeaderboard with parameters words: List<String>. Group words by length. Return length=count strings with larger groups first; ties use smaller numeric lengths first. Count duplicate occurrences.

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 List<String>. 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 groupLeaderboard(words: List<String>): List<String> {
    // Write your solution here.
    return emptyList()
}
fun main() {
    val wordsCount = readln().toInt()
    val words = mutableListOf<String>()
    for (i0 in 0 until wordsCount) {
        val wordsItem = readLine().orEmpty()
        words.add(wordsItem)
    }
    println(groupLeaderboard(words))
}