minOf

import kotlin.math.*
import kotlin.test.*

fun main() { 
   //sampleStart 
   data class Rectangle(val width: Double, val height: Double) {
    val aspectRatio: Double get() = if (height != 0.0) width / height else Double.NaN
}

// The largest and smallest width-to-height ratios
val rectangles = listOf(
    Rectangle(15.0, 10.0),
    Rectangle(25.0, 20.0),
    Rectangle(40.0, 30.0),
)
println(rectangles.maxOf { it.aspectRatio }) // 1.5
println(rectangles.minOf { it.aspectRatio }) // 1.25

// Aspect ratio of a point (0.0 by 0.0) is NaN, hence the result is NaN
val rectanglesAndPoint = rectangles + Rectangle(0.0, 0.0)
println(rectanglesAndPoint.maxOf { it.aspectRatio }) // NaN
println(rectanglesAndPoint.minOf { it.aspectRatio }) // NaN

val emptyList = emptyList<Rectangle>()

// maxOf() and minOf() throw if the collection is empty
// emptyList.maxOf { it.aspectRatio } // will fail with NoSuchElementException
// emptyList.minOf { it.aspectRatio } // will fail with NoSuchElementException

// maxOfOrNull() and minOfOrNull() return null if the collection is empty
println(emptyList.maxOfOrNull { it.aspectRatio }) // null
println(emptyList.minOfOrNull { it.aspectRatio }) // null 
   //sampleEnd
}

import kotlin.math.*
import kotlin.test.*

fun main() { 
   //sampleStart 
   // The length of the longest and shortest names
val names = listOf("Alice", "Bob", "Carol")
println(names.maxOf { it.length }) // 5
println(names.minOf { it.length }) // 3

val emptyList = emptyList<String>()

// maxOf() and minOf() throw if the collection is empty
// emptyList.maxOf { it.length } // will fail with NoSuchElementException
// emptyList.minOf { it.length } // will fail with NoSuchElementException

// maxOfOrNull() and minOfOrNull() return null if the collection is empty
println(emptyList.maxOfOrNull { it.length }) // null
println(emptyList.minOfOrNull { it.length }) // null 
   //sampleEnd
}