reduce
Accumulates value starting with the first character and applying operation from left to right to current accumulator value and each character.
inline fun CharSequence.reduce(operation: (acc: Char, Char) -> Char): Char(source)
fun main() { val text = "Kotlin" val maxChar = text.reduce { acc, c -> if (c > acc) c else acc } println("Max character: $maxChar") // Output: Max character: t }