// version 1.1.51

fun main(args: Array<String>) {
    val cities = listOf("UK London", "US New York", "US Birmingham", "UK Birmingham")
    println("Original   : $cities")
    // sort by country
    println("By country : ${cities.sortedBy { it.take(2) } }")
    // sort by city
    println("By city    : ${cities.sortedBy { it.drop(3) } }")
}