package core:slice/heap
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    Overview

    Package implements a generic max heap in-place on a slice for any type.

    Index

    Types (0)

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    Constants (0)

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    Variables (0)

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    Procedure Groups (0)

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    Types

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    Constants

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    Variables

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    Procedures

    is_heap ¶
    Source

    is_heap :: proc(data: []$T, less: proc(a, b: $T) -> bool) -> bool {…}
     

    Checks if a given slice is a max heap.

    At most O(n) comparisons where N = len(data) will be performed.

    is_heap_until ¶
    Source

    is_heap_until :: proc(data: []$T, less: proc(a, b: $T) -> bool) -> int {…}
     

    Examines the slice and finds the largest range which is a max-heap. Elements are compared with user-supplied comparison procedure.

    This returns the upper bound of the largest range in the slice which is a max heap. That is, the last index for which data is a max heap.

    At most O(n) comparisons where N = len(data) will be performed.

    make ¶
    Source

    make :: proc(data: []$T, less: proc(a, b: $T) -> bool) {…}
     

    Constructs a max heap in slice given by data with comparator. A max heap is a range of elements which has the following properties:

    1. With N = len(data), for all 0 < i < N, data[(i - 1) / 2] does not compare less than data[i].

    2. A new element can be added using push in O(log n) time.

    3. The first element can be removed using pop in O(log n) time.

    The comparator compares elements of type T and can be used to construct a max heap (less than) or min heap (greater than) for T.

    pop ¶
    Source

    pop :: proc(data: []$T, less: proc(a, b: $T) -> bool) {…}
     

    Swaps the value in position data[0] and the value in data[len(data)-1] and makes subrange [0, len(data)-1) into a heap. This has the effect of removing the first element from the heap.

    At most 2 * log(N) comparisons where N = len(data) will be performed.

    push ¶
    Source

    push :: proc(data: []$T, less: proc(a, b: $T) -> bool) {…}
     

    Inserts the element at the position len(data)-1 into the max heap with comparator.

    At most log(N) comparisons where N = len(data) will be performed.

    sort ¶
    Source

    sort :: proc(data: []$T, less: proc(a, b: $T) -> bool) {…}
     

    Converts the max heap into a sorted range in ascending order. The resulting slice will no longer be a heap after this.

    At most 2 N log(N) comparisons where N = len(data) will be performed.

    Procedure Groups

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    Source Files

    Generation Information

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