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Daniel Dahan
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wip: updated spacing
1 parent 4ccf6a9 commit 5580954

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‎Algorithm.xcodeproj/project.pbxproj

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65744C9D1C554BA50011C977 /* Products */,
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);
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sourceTree = "<group>";
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usesTabs = 0;
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};
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65744C9D1C554BA50011C977 /* Products */ = {
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isa = PBXGroup;

‎Sources/Algorithm+Array.swift

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/*
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* Copyright (C) 2015 - 2018, Daniel Dahan and CosmicMind, Inc. <http://cosmicmind.com>.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* * Neither the name of CosmicMind nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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* Copyright (C) 2015 - 2019, Daniel Dahan and CosmicMind, Inc. <http://cosmicmind.com>.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* * Neither the name of CosmicMind nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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extension Array where Element: Equatable {
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/**
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Removes a given Element from an Array if it exists.
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- Parameter object: An Element.
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- Returns: An optional Element if the removed
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element exists.
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*/
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@discardableResult
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mutating func remove(object: Element) -> Element? {
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return index(of: object).map { self.remove(at: $0) }
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}
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/**
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Removes a list of given Elements from an Array if
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they exists.
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- Parameter objects: A list of Elements.
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*/
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mutating func remove(objects: Element...) {
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remove(objects: objects)
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}
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/**
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Removes an Array of given Elements from an Array if
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they exists.
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- Parameter objects: An Array of Elements.
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*/
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mutating func remove(objects: [Element]) {
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objects.forEach {
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self.remove(object: $0)
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}
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}
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/**
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The total count for the given Elements.
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- Parameter of elements: A list of Elements.
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- Returns: An Int.
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*/
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public func count(of elements: Element...) -> Int {
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return count(of: elements)
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}
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/**
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The total count for the given Elements.
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- Parameter of elements: An Array of Elements.
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- Returns: An Int.
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*/
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public func count(of elements: [Element]) -> Int {
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var c = 0
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for e in elements {
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for x in self where e == x {
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c += 1
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}
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}
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return c
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}
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/**
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The probability of getting the given Elements.
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- Parameter of elements: A list of Elements.
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- Returns: A Double.
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*/
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public func probability(of elements: Element...) -> Double {
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return probability(of: elements)
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}
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/**
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The probability of getting the given Elements.
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- Parameter of elements: An Array of Elements.
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- Returns: A Double.
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*/
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public func probability(of elements: [Element]) -> Double {
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return 0 < count ? Double(count(of: elements)) / Double(count) : 0
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}
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/**
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A probability method that uses a block to determine the member state of a condition.
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- Parameter of elements: A list of Elements.
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- Returns: A Double.
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*/
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public func probability(execute block: @escaping (Element) -> Bool) -> Double {
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guard 0 < count else {
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return 0
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}
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var c = 0
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for e in self {
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if block(e) {
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c += 1
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}
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}
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return Double(c) / Double(count)
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}
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/**
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Calculates the expected value of elements based on a given number of trials.
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- Parameter trials: Number of trials.
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- Parameter elements: A list of Elements.
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- Returns: A Double.
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*/
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public func expectedValue(trials: Int, for elements: Element...) -> Double {
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return expectedValue(trials: trials, for: elements)
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}
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/**
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Calculates the expected value of elements based on a given number of trials.
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- Parameter trials: Number of trials.
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- Parameter elements: An Array of Elements.
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- Returns: A Double.
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*/
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public func expectedValue(trials: Int, for elements: [Element]) -> Double {
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return Double(trials) * probability(of: elements)
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}
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/**
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Removes a given Element from an Array if it exists.
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- Parameter object: An Element.
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- Returns: An optional Element if the removed
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element exists.
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*/
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@discardableResult
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mutating func remove(object: Element) -> Element? {
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return index(of: object).map { self.remove(at: $0) }
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}
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/**
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Removes a list of given Elements from an Array if
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they exists.
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- Parameter objects: A list of Elements.
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*/
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mutating func remove(objects: Element...) {
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remove(objects: objects)
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}
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/**
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Removes an Array of given Elements from an Array if
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they exists.
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- Parameter objects: An Array of Elements.
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*/
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mutating func remove(objects: [Element]) {
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objects.forEach {
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self.remove(object: $0)
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}
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}
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/**
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The total count for the given Elements.
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- Parameter of elements: A list of Elements.
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- Returns: An Int.
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*/
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public func count(of elements: Element...) -> Int {
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return count(of: elements)
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}
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/**
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The total count for the given Elements.
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- Parameter of elements: An Array of Elements.
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- Returns: An Int.
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*/
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public func count(of elements: [Element]) -> Int {
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var c = 0
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for e in elements {
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for x in self where e == x {
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c += 1
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}
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}
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return c
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}
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/**
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The probability of getting the given Elements.
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- Parameter of elements: A list of Elements.
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- Returns: A Double.
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*/
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public func probability(of elements: Element...) -> Double {
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return probability(of: elements)
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}
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/**
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The probability of getting the given Elements.
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- Parameter of elements: An Array of Elements.
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- Returns: A Double.
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*/
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public func probability(of elements: [Element]) -> Double {
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return 0 < count ? Double(count(of: elements)) / Double(count) : 0
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}
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/**
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A probability method that uses a block to determine the member state of a condition.
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- Parameter of elements: A list of Elements.
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- Returns: A Double.
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*/
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public func probability(execute block: @escaping (Element) -> Bool) -> Double {
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guard 0 < count else {
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return 0
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}
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var c = 0
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for e in self {
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if block(e) {
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c += 1
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}
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}
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return Double(c) / Double(count)
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}
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/**
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Calculates the expected value of elements based on a given number of trials.
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- Parameter trials: Number of trials.
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- Parameter elements: A list of Elements.
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- Returns: A Double.
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*/
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public func expectedValue(trials: Int, for elements: Element...) -> Double {
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return expectedValue(trials: trials, for: elements)
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}
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/**
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Calculates the expected value of elements based on a given number of trials.
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- Parameter trials: Number of trials.
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- Parameter elements: An Array of Elements.
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- Returns: A Double.
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*/
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public func expectedValue(trials: Int, for elements: [Element]) -> Double {
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return Double(trials) * probability(of: elements)
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}
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}

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