// simple way list.joinToString() // change separator list.joinToString(separator = "") // the full syntax list.joinToString( prefix = "[", separator = ":", postfix = "]", limit = 3, truncated = "...", transform = { it.uppercase() } )fun main() { val chars = charArrayOf('A', 'f', 'r', 'o', 'D', 'e', 'm', 'o', 'z') val str = String(chars) println(str) // AfroDemoz }