package batteries

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A community-maintained standard library extension

Install

Dune Dependency

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Authors

O

OCaml batteries-included team

Maintainers

Sources

v3.5.1.tar.gz

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sha512=36c8561079aa9fefc864c2f03bd8ae20aa05987bb67e7a9beac3ab4f440dbf7d44f141c172b05fddb1a5b618fc55a27962bb45fc39bd7b3a15d56e0ed3ff3870

doc/batteries.unthreaded/BatHeap/index.html

Module `BatHeap`

Functional heaps over ordered types

Ascribes to:

BatEnum.Enumerable with type 'a enumerable = 'a t

type +'a t

Heap of elements that are compared with Pervasives.compare.

val size : 'a t -> int

Number of elements in the heap. O(1)

Construction

val empty : 'a t

The empty heap.

val insert : 'a t -> 'a -> 'a t

Insert an element into the heap. Duplicates are kept. O(log m)

val add : 'a -> 'a t -> 'a t

add x h is the same as insert h x. This function is intended to be used with fold_right.

Operations

val merge : 'a t -> 'a t -> 'a t

Merge two heaps. O(log m)

val find_min : 'a t -> 'a

Find the minimal element of the heap. O(1)

raises Invalid_argument
"find_min" if the heap is empty

val del_min : 'a t -> 'a t

Delete the minimal element of the heap. O(log n)

raises Invalid_argument
"del_min" if the heap is empty

Transformation

val of_list : 'a list -> 'a t

Build a heap from a given list. O(n log n)

val to_list : 'a t -> 'a list

Enumerate the elements of the heap. O(n log n)

val elems : 'a t -> 'a list

deprecated
Same as to_list.

val of_enum : 'a BatEnum.t -> 'a t

Build a heap from an enumeration. Consumes the enumeration. O(n log n)

val enum : 'a t -> 'a BatEnum.t

Enumerate the elements of the heap in heap order. O(log n) per BatEnum.get.

Printing

val print : 
  ?first:string ->
  ?last:string ->
  ?sep:string ->
  ('a, 'b) BatIO.printer ->
  ('a t, 'b) BatIO.printer

Print the contents of the heap in heap order. O(n log n)

Functorized version

module type H = sig ... end

The result of Make

module Make (Ord : BatInterfaces.OrderedType) : H with type elem = Ord.t

Functorized heaps over arbitrary orderings. All the functions have the same complexity as the non-functorized versions.

On This Page

Construction
Operations
Transformation
Printing
Functorized version