return a word from a given array in kotlin

user_17696262 0
Viewed 52

I am beginner in kotlin (in coding in general) and am trying to get the following sentence: "The 6 sided [randomColor] dice rolled [randomNumber]". Basically the only part I cannot get correctly is the color, I get "kotlin.Unit" instead. The code I am using is below. Many thanks in advance for your help!

fun main() {
    val myFirstDice = Dice(6)
    println ("The ${myFirstDice.numSides} sided ${randomColor()} dice rolled ${myFirstDice.roll()}")
}

class Dice(val numSides: Int){ 
    fun roll(): Int{
        return (1..numSides).random()
    }
}

fun randomColor() {
    val list = listOf("black", "yellow", "green")
    val randomColor = list.shuffled().find { true }
}
kotlin
2 Answers

I would do it a little bit differently. I would not use shuffled() method, but instead rely on the built-in random() method available since kotlin 1.3 (reference documentation):

fun randomColor(): String {
    val list = listOf("black", "yellow", "green")
    return list.random()
}
user_165722950

You need to return the value of randomColor:

fun randomColor(): String? {
    val list = listOf("black", "yellow", "green")
    val randomColor = list.shuffled().find { true }
    return randomColor;
}
user_24227760
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