Kotlin- When minOrNull() returns null?

Question

var arr= arrayOf(1,2,3)
print(arr.minOrNull())

The output is 1.

When will the minOrNull() extension return null?🤔

Answer 1

minOrNull() returns null when collection/array is empty

https://kotlinlang.org/docs/collection-aggregate.html

""'
minOrNull() and maxOrNull() return the smallest and the largest element respectively. On empty collections, they return null.
""'

Answer 2

Thank you 🇮🇳Omkar🕉