{"id":16650,"date":"2022-10-21T19:34:27","date_gmt":"2022-10-21T14:04:27","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-how-to-print-arrays-even-numbers-sum-avarage-and-odd-numbers-sum-average\/"},"modified":"2022-10-21T19:34:27","modified_gmt":"2022-10-21T14:04:27","slug":"solved-how-to-print-arrays-even-numbers-sum-avarage-and-odd-numbers-sum-average","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-how-to-print-arrays-even-numbers-sum-avarage-and-odd-numbers-sum-average\/","title":{"rendered":"[Solved] how to print array&#8217;s even numbers sum\/avarage and odd numbers sum\/average?"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-55700497\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"55700497\" data-parentid=\"55699270\" data-score=\"0\" data-position-on-page=\"1\" data-highest-scored=\"1\" data-question-has-accepted-highest-score=\"1\" itemprop=\"acceptedAnswer\" itemscope itemtype=\"https:\/\/schema.org\/Answer\">\n<div class=\"post-layout\">\n<div class=\"votecell post-layout--left\"><\/div>\n<div class=\"answercell post-layout--right\">\n<div class=\"s-prose js-post-body\" itemprop=\"text\">\n<h2>O(<em>n<\/em>)<\/h2>\n<p>You can do it in one sweep :<\/p>\n<pre><code>let (oddsSum, oddsCount, evensSum, evensCount) = a.reduce(into:(0, 0, 0, 0)) { tuple, element in\n    if element % 2 != 0 {\n        tuple.0 += element\n        tuple.1 += 1\n    } else {\n        tuple.2 += element\n        tuple.3 += 1\n    }\n}\n\nlet oddsAverage = oddsCount == 0 ? 0.0 : Double(oddsSum) \/ Double(oddsCount)\nlet evensAverage = evensCount == 0 ? 0.0 : Double(evensSum) \/ Double(evensCount) \n<\/code><\/pre>\n<p>Which would yield the following results :<\/p>\n<blockquote>\n<pre>oddsSum       \/\/169 \noddsAverage   \/\/56.33333333333334 \nevensSum      \/\/364 \nevensAverage  \/\/52<\/pre>\n<\/blockquote>\n<hr>\n<h2>Two arrays<\/h2>\n<p>You can create two arrays of odds and evens like so :<\/p>\n<pre><code>let a = [32, 37, 68, 66, 97, 38, 16, 86, 35, 58]\n\nlet (odds, evens) = a.reduce(into:([Int](), [Int]())) { tuple, element in\n    if element % 2 != 0 {\n        tuple.0.append(element)\n    } else {\n        tuple.1.append(element)\n    }\n}\n<\/code><\/pre>\n<p><code>odds<\/code> and <code>evens<\/code> are two arrays of integers: <code>[Int]<\/code>.<\/p>\n<hr>\n<h2>Sums<\/h2>\n<p>To calculate the sums :<\/p>\n<pre><code>let oddsSum = odds.reduce(0, +)           \/\/169\nlet evensSum = odds.reduce(0, +)          \/\/364\n<\/code><\/pre>\n<p>You can also use <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/developer.apple.com\/documentation\/accelerate\/1513208-cblas_dasum\"><code>cblas_dasum(_:_:_:)<\/code><\/a> from the Accelerate framework, which is faster than <code>reduce<\/code> :<\/p>\n<pre><code>import Accelerate\n\nvar (odds, evens) = a.reduce(into:([Double](), [Double]())) { tuple, element in\n    if element % 2 != 0 {\n        tuple.0.append(Double(element))\n    } else {\n        tuple.1.append(Double(element))\n    }\n}\n\nvar oddSum = Int(cblas_dasum(Int32(odds.count), &amp;odds, 1))\nprint(oddSum)     \/\/169\n\nvar evenSum = Int(cblas_dasum(Int32(evens.count), &amp;evens, 1))\nprint(evenSum)    \/\/364\n<\/code><\/pre>\n<hr>\n<h2>Averages<\/h2>\n<p>The averages are the sums divided by the number of elements in each array.<\/p>\n<pre><code>let oddsAverage = odds.isEmpty ? 0.0 : Double(oddsSum) \/ Double(odds.count)    \/\/56.33333333333334\nlet evensAverage = evens.isEmpty ? 0.0 : Double(evensSum) \/ Double(evens.count) \/\/52\n<\/code><\/pre>\n<p>Or you can use <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/developer.apple.com\/documentation\/accelerate\/1449784-vdsp_meanvd\"><code>vDSP_meanvD(_:_:_:_:)<\/code><\/a> from the Accelerate framework, which is faster than calculating the sum and then dividing by the count :<\/p>\n<pre><code>import Accelerate\n\nvar (odds, evens) = a.reduce(into:([Double](), [Double]())) { tuple, element in\n    if element % 2 != 0 {\n        tuple.0.append(Double(element))\n    } else {\n        tuple.1.append(Double(element))\n    }\n}\n\nvar oddAvg = 0.0\nvDSP_meanvD(&amp;odds, 1, &amp;oddAvg, vDSP_Length(odds.count))\nprint(oddAvg)     \/\/56.333333333333336\n\nvar evenAvg = 0.0\nvDSP_meanvD(&amp;evens, 1, &amp;evenAvg, vDSP_Length(evens.count))\nprint(evenAvg)    \/\/52.0\n<\/code><\/pre>\n<\/p><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\"><\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved how to print array&#8217;s even numbers sum\/avarage and odd numbers sum\/average? <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] O(n) You can do it in one sweep : let (oddsSum, oddsCount, evensSum, evensCount) = a.reduce(into:(0, 0, 0, 0)) { tuple, element in if element % 2 != 0 { tuple.0 += element tuple.1 += 1 } else { tuple.2 += element tuple.3 += 1 } } let oddsAverage = oddsCount == 0 ? &#8230; <a title=\"[Solved] how to print array&#8217;s even numbers sum\/avarage and odd numbers sum\/average?\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-how-to-print-arrays-even-numbers-sum-avarage-and-odd-numbers-sum-average\/\" aria-label=\"More on [Solved] how to print array&#8217;s even numbers sum\/avarage and odd numbers sum\/average?\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[522],"class_list":["post-16650","post","type-post","status-publish","format-standard","hentry","category-solved","tag-swift"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[Solved] how to print array&#039;s even numbers sum\/avarage and odd numbers sum\/average? - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-how-to-print-arrays-even-numbers-sum-avarage-and-odd-numbers-sum-average\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] how to print array&#039;s even numbers sum\/avarage and odd numbers sum\/average? - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] O(n) You can do it in one sweep : let (oddsSum, oddsCount, evensSum, evensCount) = a.reduce(into:(0, 0, 0, 0)) { tuple, element in if element % 2 != 0 { tuple.0 += element tuple.1 += 1 } else { tuple.2 += element tuple.3 += 1 } } let oddsAverage = oddsCount == 0 ? ... Read more\" \/>\n<meta property=\"og:url\" content=\"https:\/\/jassweb.com\/solved\/solved-how-to-print-arrays-even-numbers-sum-avarage-and-odd-numbers-sum-average\/\" \/>\n<meta property=\"og:site_name\" content=\"JassWeb\" \/>\n<meta property=\"article:published_time\" content=\"2022-10-21T14:04:27+00:00\" \/>\n<meta name=\"author\" content=\"Kirat\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Kirat\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/jassweb.com\/solved\/solved-how-to-print-arrays-even-numbers-sum-avarage-and-odd-numbers-sum-average\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/jassweb.com\/solved\/solved-how-to-print-arrays-even-numbers-sum-avarage-and-odd-numbers-sum-average\/\"},\"author\":{\"name\":\"Kirat\",\"@id\":\"https:\/\/jassweb.com\/solved\/#\/schema\/person\/65c9c7b7958150c0dc8371fa35dd7c31\"},\"headline\":\"[Solved] how to print array&#8217;s even numbers sum\/avarage and odd numbers sum\/average?\",\"datePublished\":\"2022-10-21T14:04:27+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/jassweb.com\/solved\/solved-how-to-print-arrays-even-numbers-sum-avarage-and-odd-numbers-sum-average\/\"},\"wordCount\":119,\"publisher\":{\"@id\":\"https:\/\/jassweb.com\/solved\/#organization\"},\"keywords\":[\"swift\"],\"articleSection\":[\"Solved\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/jassweb.com\/solved\/solved-how-to-print-arrays-even-numbers-sum-avarage-and-odd-numbers-sum-average\/\",\"url\":\"https:\/\/jassweb.com\/solved\/solved-how-to-print-arrays-even-numbers-sum-avarage-and-odd-numbers-sum-average\/\",\"name\":\"[Solved] how to print array's even numbers sum\/avarage and odd numbers sum\/average? - JassWeb\",\"isPartOf\":{\"@id\":\"https:\/\/jassweb.com\/solved\/#website\"},\"datePublished\":\"2022-10-21T14:04:27+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/jassweb.com\/solved\/solved-how-to-print-arrays-even-numbers-sum-avarage-and-odd-numbers-sum-average\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/jassweb.com\/solved\/solved-how-to-print-arrays-even-numbers-sum-avarage-and-odd-numbers-sum-average\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/jassweb.com\/solved\/solved-how-to-print-arrays-even-numbers-sum-avarage-and-odd-numbers-sum-average\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/jassweb.com\/solved\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"[Solved] how to print array&#8217;s even numbers sum\/avarage and odd numbers sum\/average?\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/jassweb.com\/solved\/#website\",\"url\":\"https:\/\/jassweb.com\/solved\/\",\"name\":\"JassWeb\",\"description\":\"Build High-quality Websites\",\"publisher\":{\"@id\":\"https:\/\/jassweb.com\/solved\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/jassweb.com\/solved\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/jassweb.com\/solved\/#organization\",\"name\":\"Jass Web\",\"url\":\"https:\/\/jassweb.com\/solved\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/jassweb.com\/solved\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/jassweb.com\/wp-content\/uploads\/2021\/02\/jass-website-logo-1.png\",\"contentUrl\":\"https:\/\/jassweb.com\/wp-content\/uploads\/2021\/02\/jass-website-logo-1.png\",\"width\":693,\"height\":132,\"caption\":\"Jass Web\"},\"image\":{\"@id\":\"https:\/\/jassweb.com\/solved\/#\/schema\/logo\/image\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\/\/jassweb.com\/solved\/#\/schema\/person\/65c9c7b7958150c0dc8371fa35dd7c31\",\"name\":\"Kirat\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/jassweb.com\/solved\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/jassweb.com\/solved\/wp-content\/litespeed\/avatar\/1261af3c9451399fa1336d28b98ea3bb.jpg?ver=1776403586\",\"contentUrl\":\"https:\/\/jassweb.com\/solved\/wp-content\/litespeed\/avatar\/1261af3c9451399fa1336d28b98ea3bb.jpg?ver=1776403586\",\"caption\":\"Kirat\"},\"sameAs\":[\"http:\/\/jassweb.com\"],\"url\":\"https:\/\/jassweb.com\/solved\/author\/jaspritsinghghumangmail-com\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"[Solved] how to print array's even numbers sum\/avarage and odd numbers sum\/average? - JassWeb","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/jassweb.com\/solved\/solved-how-to-print-arrays-even-numbers-sum-avarage-and-odd-numbers-sum-average\/","og_locale":"en_US","og_type":"article","og_title":"[Solved] how to print array's even numbers sum\/avarage and odd numbers sum\/average? - JassWeb","og_description":"[ad_1] O(n) You can do it in one sweep : let (oddsSum, oddsCount, evensSum, evensCount) = a.reduce(into:(0, 0, 0, 0)) { tuple, element in if element % 2 != 0 { tuple.0 += element tuple.1 += 1 } else { tuple.2 += element tuple.3 += 1 } } let oddsAverage = oddsCount == 0 ? ... Read more","og_url":"https:\/\/jassweb.com\/solved\/solved-how-to-print-arrays-even-numbers-sum-avarage-and-odd-numbers-sum-average\/","og_site_name":"JassWeb","article_published_time":"2022-10-21T14:04:27+00:00","author":"Kirat","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Kirat","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/jassweb.com\/solved\/solved-how-to-print-arrays-even-numbers-sum-avarage-and-odd-numbers-sum-average\/#article","isPartOf":{"@id":"https:\/\/jassweb.com\/solved\/solved-how-to-print-arrays-even-numbers-sum-avarage-and-odd-numbers-sum-average\/"},"author":{"name":"Kirat","@id":"https:\/\/jassweb.com\/solved\/#\/schema\/person\/65c9c7b7958150c0dc8371fa35dd7c31"},"headline":"[Solved] how to print array&#8217;s even numbers sum\/avarage and odd numbers sum\/average?","datePublished":"2022-10-21T14:04:27+00:00","mainEntityOfPage":{"@id":"https:\/\/jassweb.com\/solved\/solved-how-to-print-arrays-even-numbers-sum-avarage-and-odd-numbers-sum-average\/"},"wordCount":119,"publisher":{"@id":"https:\/\/jassweb.com\/solved\/#organization"},"keywords":["swift"],"articleSection":["Solved"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/jassweb.com\/solved\/solved-how-to-print-arrays-even-numbers-sum-avarage-and-odd-numbers-sum-average\/","url":"https:\/\/jassweb.com\/solved\/solved-how-to-print-arrays-even-numbers-sum-avarage-and-odd-numbers-sum-average\/","name":"[Solved] how to print array's even numbers sum\/avarage and odd numbers sum\/average? - JassWeb","isPartOf":{"@id":"https:\/\/jassweb.com\/solved\/#website"},"datePublished":"2022-10-21T14:04:27+00:00","breadcrumb":{"@id":"https:\/\/jassweb.com\/solved\/solved-how-to-print-arrays-even-numbers-sum-avarage-and-odd-numbers-sum-average\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/jassweb.com\/solved\/solved-how-to-print-arrays-even-numbers-sum-avarage-and-odd-numbers-sum-average\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/jassweb.com\/solved\/solved-how-to-print-arrays-even-numbers-sum-avarage-and-odd-numbers-sum-average\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/jassweb.com\/solved\/"},{"@type":"ListItem","position":2,"name":"[Solved] how to print array&#8217;s even numbers sum\/avarage and odd numbers sum\/average?"}]},{"@type":"WebSite","@id":"https:\/\/jassweb.com\/solved\/#website","url":"https:\/\/jassweb.com\/solved\/","name":"JassWeb","description":"Build High-quality Websites","publisher":{"@id":"https:\/\/jassweb.com\/solved\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/jassweb.com\/solved\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/jassweb.com\/solved\/#organization","name":"Jass Web","url":"https:\/\/jassweb.com\/solved\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/jassweb.com\/solved\/#\/schema\/logo\/image\/","url":"https:\/\/jassweb.com\/wp-content\/uploads\/2021\/02\/jass-website-logo-1.png","contentUrl":"https:\/\/jassweb.com\/wp-content\/uploads\/2021\/02\/jass-website-logo-1.png","width":693,"height":132,"caption":"Jass Web"},"image":{"@id":"https:\/\/jassweb.com\/solved\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/jassweb.com\/solved\/#\/schema\/person\/65c9c7b7958150c0dc8371fa35dd7c31","name":"Kirat","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/jassweb.com\/solved\/#\/schema\/person\/image\/","url":"https:\/\/jassweb.com\/solved\/wp-content\/litespeed\/avatar\/1261af3c9451399fa1336d28b98ea3bb.jpg?ver=1776403586","contentUrl":"https:\/\/jassweb.com\/solved\/wp-content\/litespeed\/avatar\/1261af3c9451399fa1336d28b98ea3bb.jpg?ver=1776403586","caption":"Kirat"},"sameAs":["http:\/\/jassweb.com"],"url":"https:\/\/jassweb.com\/solved\/author\/jaspritsinghghumangmail-com\/"}]}},"_links":{"self":[{"href":"https:\/\/jassweb.com\/solved\/wp-json\/wp\/v2\/posts\/16650","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jassweb.com\/solved\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jassweb.com\/solved\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jassweb.com\/solved\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jassweb.com\/solved\/wp-json\/wp\/v2\/comments?post=16650"}],"version-history":[{"count":0,"href":"https:\/\/jassweb.com\/solved\/wp-json\/wp\/v2\/posts\/16650\/revisions"}],"wp:attachment":[{"href":"https:\/\/jassweb.com\/solved\/wp-json\/wp\/v2\/media?parent=16650"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jassweb.com\/solved\/wp-json\/wp\/v2\/categories?post=16650"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jassweb.com\/solved\/wp-json\/wp\/v2\/tags?post=16650"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}