Reverse words except symbols

reverseWordsExceptSymbol.kt

/**
 * Kotlin code challenges.
 * playground: https://pl.kotl.in/h9tfWDn6q
 */

import java.util.*
import kotlin.collections.ArrayList

fun main() {
    val message = "Hello, world!"

    println("$message \n")
    println(reverseWordsExceptSymbols(message))

    val message02 = "Hey Hussein, How are you?! Sup? 1234!!"

    println("\n")
    println("$message02 \n")
    println(reverseWordsExceptSymbols(message02))

}

private fun reverseWordsExceptSymbols(sentence: String): String {
    val words = getWordsWithoutSymbols(sentence)
    val reversedWords = words.reversed().toMutableList()
    val symbolsAndSpaces = getSymbolsFromSentence(sentence)

    var symbolsAndSpaceIndex = 0
    for (index in 0..reversedWords.size) {
        while (symbolsAndSpaceIndex < symbolsAndSpaces.size && symbolsAndSpaces[symbolsAndSpaceIndex] != " ") {
            reversedWords[index] += symbolsAndSpaces[symbolsAndSpaceIndex]

            symbolsAndSpaceIndex ++
        }

        if (symbolsAndSpaceIndex >= symbolsAndSpaces.size) {
            break
        }

        reversedWords[index] += symbolsAndSpaces[symbolsAndSpaceIndex]

        symbolsAndSpaceIndex ++
    }

    return reversedWords.joinToString("")
}

private fun getWordsWithoutSymbols(sentence: String): List<String> {
    val symRegex = """[^\w\d\s]""".toRegex()
    val sentenceWithoutSymbolAndSpace = sentence.replace(symRegex, "")
    return sentenceWithoutSymbolAndSpace.split(" ")
}

private fun getSymbolsFromSentence(sentence: String): List<String> {
    val regex = """[^\w\d]""".toRegex()

    return regex.findAll(sentence).map { it.value }.toList()
}