Module BatHeap

module BatHeap: sig .. end

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)

val del_min : 'a t -> 'a t

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

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

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

Functorized heaps over arbitrary orderings.