Millised on Kotlinis saadaval olevad Set-liidese rakendamise viisid ja kuidas nad erinevad?

In Kotlin, the Set interface is implemented in various ways, which differ in mutability and internal implementation:

• Set — an interface for an immutable (read-only) set. It provides read operations but not modification.
• MutableSet — extends Set and adds methods for modifying the set (adding, removing elements).

Implementations:

• HashSet — based on a hash table, provides fast access and add/remove operations. The order of elements is not guaranteed.
• LinkedHashSet — inherits from HashSet, maintains insertion order of elements.
• SortedSet / TreeSet (via Java) — a set whose elements are sorted by natural order or by a comparator.

Example:

val readOnlySet: Set<Int> = setOf(1, 2, 3)
val mutableSet: MutableSet<Int> = mutableSetOf(1, 2, 3)

mutableSet.add(4) // allowed
// readOnlySet.add(4) // compilation error

Thus, the choice of implementation depends on the requirements for mutability and element order.