Kotlin Brain Teasers

Puzzle 17

Don’t Bet on It

src/commonMain/kotlin/com/example/puzzles/control/cascade/IfElseRace.kt

data class Animal(val name: String, val speed: Int)

fun race(racer1: Animal, racer2: Animal) {
  if (racer1.speed > racer2.speed) {
    racer1.name
  } else if (racer2.speed > racer1.speed) {
    racer2.name
  } else {
    null
  }.let { winner ->
    if (winner != null) println("$winner wins!") else println("It's a draw")
  }
}

fun main() {
  race(Animal("Hare", speed = 100), Animal("Tortoise", speed = 10))
}

Guess the Output
	Try to guess the output (or error) before moving to the next page.

The program completes ...