core/org.gnit.lucenekmp.jdkport/Collections

Collections

object Collections

Types

ReverseComparator

class ReverseComparator<T> : Comparator<Comparable<T>>

Functions

reverse

fun <T> reverse(list: MutableList<T>)

reverseOrder

fun <T> reverseOrder(): Comparator<T>

Returns a comparator that imposes the reverse ordering of the specified comparator. If the specified comparator is null, this method is equivalent to .reverseOrder (in other words, it returns a comparator that imposes the reverse of the natural ordering on a collection of objects that implement the Comparable interface).

fun <T> reverseOrder(cmp: Comparator<T?>?): Comparator<T?>

swap

fun <T> swap(list: MutableList<T>, i: Int, j: Int)

Swaps the elements at the specified positions in the specified list. (If the specified positions are equal, invoking this method leaves the list unchanged.)

synchronizedSet

fun <T> synchronizedSet(set: MutableSet<T>): MutableSet<T>

unmodifiableSet

fun <T> unmodifiableSet(set: Set<T>): MutableSet<T>