Order Preservation:Use when insertion order matters. Element Uniqueness:Ensure elements implement proper == and hashCode. Performance:O(1) for add/contains/remove operations. Memory:Uses more memory than HashSet due to order tracking. Source Dart LinkedHashSet Documentation This tutorial covered Dart'...
Like HashSet, it provides constant-time performance for the basic operations (add, contains and remove), assuming the hash function disperses elements properly among the buckets. LinkedHashSet支持所有Set操作,允许null; LinkedHashSet的add、contains、remove 花费 O(1)时间复杂度,因为Hash将元素分散在...
E getLast() Gets the last element of this collection. static <T> LinkedHashSet<T> newLinkedHashSet(int numElements) Creates a new, empty LinkedHashSet suitable for the expected number of elements. E removeFirst() Removes and returns the first element of this collection (optional operation)....
Note that insertion order is not affectedifan element is re-inserted into the set 关于时间复杂度 和HashSet一样,如果hash方法可以使得元素能够非常散列的落在buckets中,add,contains,remove方法的时间复杂度是O(1) Like HashSet, it provides constant-time performanceforthe basic operations (add,contains and...
getLast() Gets the last element of this collection. static <T> LinkedHashSet<T> newLinkedHashSet(int numElements) Creates a new, empty LinkedHashSet suitable for the expected number of elements. E removeFirst() Removes and returns the first element of this collection (optional operation). E...