Packages

sealed abstract class Heap[A] extends AnyRef

An efficient, asymptotically optimal, implementation of priority queues extended with support for efficient size.

The implementation of 'Heap' is based on bootstrapped skew binomial heaps as described by: G. Brodal and C. Okasaki , "Optimal Purely Functional Priority Queues", Journal of Functional Programming 6:839-857 (1996),

Based on the heaps Haskell library by Edward Kmett

Source
Heap.scala
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Abstract Value Members

  1. abstract def fold[B](empty: ⇒ B, nonempty: (Int, (A, A) ⇒ Boolean, Tree[Ranked[A]]) ⇒ B): B

Concrete Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##(): Int
    Definition Classes
    AnyRef → Any
  3. final def +(a: A)(implicit o: Order[A]): Heap[A]

    Alias for insert

  4. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  5. def adjustMin(f: (A) ⇒ A): Heap[A]
  6. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  7. def break(p: (A) ⇒ Boolean): (Heap[A], Heap[A])

    Returns a tuple where the first element is a heap consisting of the longest prefix of least elements in this heap that do not satisfy the given predicate, and the second element is the remainder of the elements.

    Returns a tuple where the first element is a heap consisting of the longest prefix of least elements in this heap that do not satisfy the given predicate, and the second element is the remainder of the elements. O(n log n)

  8. def clone(): AnyRef
    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @native() @throws( ... )
  9. def deleteMin: Heap[A]

    Delete the minimum key from the heap and return the resulting heap.

    Delete the minimum key from the heap and return the resulting heap. O(log n)

  10. def drop(n: Int): Heap[A]

    Return a heap consisting of all the members of this heap except for the least n.

    Return a heap consisting of all the members of this heap except for the least n. O(n log n)

  11. def dropWhile(p: (A) ⇒ Boolean): Heap[A]

    Returns a heap consisting of the longest prefix of least elements of this heap that do not satisfy the predicate.

    Returns a heap consisting of the longest prefix of least elements of this heap that do not satisfy the predicate. O(n log n)

  12. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  13. def equals(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  14. def exists(f: (A) ⇒ Boolean): Boolean
  15. def filter(p: (A) ⇒ Boolean): Heap[A]

    Filter the heap, retaining only values that satisfy the predicate.

    Filter the heap, retaining only values that satisfy the predicate. O(n)

  16. def finalize(): Unit
    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  17. def flatMap[B](f: (A) ⇒ Heap[B])(implicit arg0: Order[B]): Heap[B]

    Construct heaps from each element in this heap and union them together into a new heap.

    Construct heaps from each element in this heap and union them together into a new heap. O(n)

  18. def foldRight[B](z: B)(f: (A, ⇒ B) ⇒ B): B
  19. def forall(f: (A) ⇒ Boolean): Boolean
  20. def foreach(f: (A) ⇒ Unit): Unit
  21. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  22. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  23. def insert(a: A)(implicit o: Order[A]): Heap[A]

    Insert a new value into the heap.

    Insert a new value into the heap. O(1)

  24. def insertAll(as: TraversableOnce[A])(implicit o: Order[A]): Heap[A]
  25. def insertAllF[F[_]](as: F[A])(implicit F: Foldable[F], o: Order[A]): Heap[A]
  26. def isEmpty: Boolean

    Is the heap empty? O(1)

  27. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  28. def map[B](f: (A) ⇒ B)(implicit arg0: Order[B]): Heap[B]

    Map a function over the heap, returning a new heap ordered appropriately.

    Map a function over the heap, returning a new heap ordered appropriately. O(n)

  29. def minimum: A

    Get the minimum key on the (nonempty) heap.

    Get the minimum key on the (nonempty) heap. O(1)

  30. def minimumO: Option[A]

    Get the minimum key on the (nonempty) heap.

    Get the minimum key on the (nonempty) heap. O(1)

  31. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  32. final def nonEmpty: Boolean

    Is the heap populated? O(1)

  33. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  34. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  35. def nub: Heap[A]

    Remove duplicate entries from the heap.

    Remove duplicate entries from the heap. O(n log n)

  36. def partition(p: (A) ⇒ Boolean): (Heap[A], Heap[A])

    Partition the heap according to a predicate.

    Partition the heap according to a predicate. The first heap contains all elements that satisfy the predicate. The second contains all elements that fail the predicate. O(n)

  37. def size: Int

    The number of elements in the heap.

    The number of elements in the heap. O(1)

  38. def span(p: (A) ⇒ Boolean): (Heap[A], Heap[A])

    Returns a tuple where the first element is a heap consisting of the longest prefix of least elements in this heap that satisfy the given predicate and the second element is the remainder of the elements.

    Returns a tuple where the first element is a heap consisting of the longest prefix of least elements in this heap that satisfy the given predicate and the second element is the remainder of the elements. O(n log n)

  39. def split(a: A): (Heap[A], Heap[A], Heap[A])

    Partition the heap of the elements that are less than, equal to, and greater than a given value.

    Partition the heap of the elements that are less than, equal to, and greater than a given value. O(n)

  40. def splitAt(n: Int): (Heap[A], Heap[A])

    Split into two heaps, the first containing the n least elements, the second containing the n greatest elements.

    Split into two heaps, the first containing the n least elements, the second containing the n greatest elements. O(n log n)

  41. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  42. def take(n: Int): Heap[A]

    Return a heap consisting of the least n elements of this heap.

    Return a heap consisting of the least n elements of this heap. O(n log n)

  43. def takeWhile(p: (A) ⇒ Boolean): Heap[A]

    Returns a heap consisting of the longest prefix of least elements of this heap that satisfy the predicate.

    Returns a heap consisting of the longest prefix of least elements of this heap that satisfy the predicate. O(n log n)

  44. def toList: List[A]
  45. def toStream: Stream[A]
  46. def toString(): String
    Definition Classes
    Heap → AnyRef → Any
  47. def toUnsortedList: List[A]
  48. def toUnsortedStream: Stream[A]
  49. def traverse[F[_], B](f: (A) ⇒ F[B])(implicit arg0: Applicative[F], arg1: Order[B]): F[Heap[B]]

    Traverse the elements of the heap in sorted order and produce a new heap with applicative effects.

    Traverse the elements of the heap in sorted order and produce a new heap with applicative effects. O(n log n)

  50. def uncons: Option[(A, Heap[A])]

    Split the heap into the minimum element and the remainder.

    Split the heap into the minimum element and the remainder. O(log n)

  51. def union(as: Heap[A]): Heap[A]

    Meld the values from two heaps into one heap.

    Meld the values from two heaps into one heap. O(1)

  52. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  53. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  54. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @throws( ... )

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