{"id":17217,"date":"2022-10-23T12:38:16","date_gmt":"2022-10-23T07:08:16","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-array-return-element-based-on-number-occurrence-closed\/"},"modified":"2022-10-23T12:38:16","modified_gmt":"2022-10-23T07:08:16","slug":"solved-array-return-element-based-on-number-occurrence-closed","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-array-return-element-based-on-number-occurrence-closed\/","title":{"rendered":"[Solved] array return element based on number occurrence [closed]"},"content":{"rendered":"

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Adding an example code (the thing you’d already tried) is not only polite on StackOverflow, but also helps answering question about your problem – it’s easier to help with an example.<\/p>\n

But, I’ll give it a try now:<\/p>\n<\/p>\n

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const people = ['Mary', 'Paul', 'John', 'Lisa', 'Mary', 'Mary', 'Paul', 'Lisa'];\n\n\/\/ counting the names & storing in an object\nconst countAppearance = ({\n  arr\n}) => {\n  return arr.reduce((a, c) => {\n    if (typeof a[c] === \"undefined\") a[c] = 0\n    a[c]++\n      return a\n  }, {})\n}\n\nconst ca = countAppearance({\n  arr: people\n})\n\n\/\/ getting names as an array by count number\nconst getAppearanceByCount = ({\n  obj,\n  count\n}) => {\n  return Object.entries(obj).filter(([key, val]) => val <= count).reduce((a, c) => [...a, c[0]], [])\n}\n\n\/\/ getting names that appear twice\nconst countTwo = getAppearanceByCount({\n  obj: ca,\n  count: 2\n})\n\nconsole.log(\"two:\", countTwo)\n\n\/\/ getting names that appear three times\nconst countThree = getAppearanceByCount({\n  obj: ca,\n  count: 1\n})\n\nconsole.log(\"three:\", countThree)<\/code><\/pre>\n<\/div>\n<\/div><\/div>\n
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solved array return element based on number occurrence [closed] <\/p>\n","protected":false},"excerpt":{"rendered":"
[ad_1] Adding an example code (the thing you’d already tried) is not only polite on StackOverflow, but also helps answering question about your problem – it’s easier to help with an example. But, I’ll give it a try now: const people = [‘Mary’, ‘Paul’, ‘John’, ‘Lisa’, ‘Mary’, ‘Mary’, ‘Paul’, ‘Lisa’]; \/\/ counting the names & … 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":[333],"class_list":["post-17217","post","type-post","status-publish","format-standard","hentry","category-solved","tag-javascript"],"yoast_head":"\n[Solved] array return element based on number occurrence [closed] - 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-array-return-element-based-on-number-occurrence-closed\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] array return element based on number occurrence [closed] - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] Adding an example code (the thing you’d already tried) is not only polite on StackOverflow, but also helps answering question about your problem – it’s easier to help with an example. 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