{"id":5863,"date":"2007-06-28T16:21:00","date_gmt":"2007-06-28T16:21:00","guid":{"rendered":"https:\/\/blogs.msdn.microsoft.com\/vbteam\/2007\/06\/28\/linq-cookbook-recipe-3-find-all-the-prime-numbers-in-a-given-range-jonathan-aneja\/"},"modified":"2024-07-05T14:44:32","modified_gmt":"2024-07-05T21:44:32","slug":"linq-cookbook-recipe-3-find-all-the-prime-numbers-in-a-given-range-jonathan-aneja","status":"publish","type":"post","link":"https:\/\/devblogs.microsoft.com\/vbteam\/linq-cookbook-recipe-3-find-all-the-prime-numbers-in-a-given-range-jonathan-aneja\/","title":{"rendered":"LINQ Cookbook, Recipe 3: Find all the prime numbers in a given range (Jonathan Aneja)"},"content":{"rendered":"

Ingredients:<\/p>\n

<\/font><\/font><\/p>\n

–<\/font>          <\/span><\/span><\/span>Visual Studio 2008 (Beta2 or Higher)<\/font><\/font><\/p>\n

<\/font> <\/p>\n

Categories: LINQ-To-Objects<\/font><\/font><\/p>\n

 <\/font><\/p>\n<\/p>\n

<\/font><\/font> <\/p>\n

Instructions:<\/p>\n

<\/font><\/font><\/p>\n

–<\/font>          <\/span><\/span><\/span>Open Visual Studio 2008, and Click ‘File\/New Project’. <\/font><\/font>Find and double-click the ‘Console Application’ Icon<\/p>\n

<\/font><\/font><\/p>\n

–<\/font>         <\/span><\/span><\/span>Add the following code:<\/font><\/font><\/p>\n

 <\/font><\/p>\n<\/p>\n

   <\/span>  <\/span><\/span><\/p>\n

Module<\/span> Module1<\/p>\n

<\/span><\/p>\n

<\/p>\n

 <\/p>\n

<\/span><\/p>\n

    Sub<\/span> Main()<\/p>\n

<\/span><\/p>\n

        Dim<\/span> primes = GetPrimesInRange(30, 50)<\/p>\n

<\/span><\/p>\n

<\/p>\n

 <\/p>\n

<\/span><\/p>\n

        For<\/span> Each<\/span> n In<\/span> primes<\/p>\n

<\/span><\/p>\n

            Console.WriteLine(n)<\/p>\n

<\/span><\/p>\n

        Next<\/p>\n

<\/span><\/span><\/p>\n

        Console.ReadLine()<\/p>\n

<\/span><\/p>\n

    End<\/span> Sub<\/p>\n

<\/span><\/span><\/p>\n

<\/p>\n

 <\/p>\n

<\/span><\/p>\n

    Function<\/span> GetPrimesInRange(ByVal<\/span> low, ByVal<\/span> high) As<\/span> IEnumerable(Of<\/span> Integer<\/span>)<\/p>\n

<\/span><\/p>\n

        Dim<\/span> range = Enumerable.Range(1, high)<\/p>\n

<\/span><\/p>\n

        Return<\/span> From<\/span> num In<\/span> range _<\/p>\n

<\/span><\/p>\n

               From<\/span> num2 In<\/span> range _<\/p>\n

<\/span><\/p>\n

               Where<\/span> num Mod<\/span> num2 = 0 _<\/p>\n

<\/span><\/p>\n

               Group<\/span> By<\/span> num Into<\/span> Count() _<\/p>\n

<\/span><\/p>\n

               Where<\/span> Count = 2 And<\/span> num > low _<\/p>\n

<\/span><\/p>\n

               Select<\/span> num<\/p>\n

<\/span><\/p>\n

    End<\/span> Function<\/p>\n

<\/span><\/span><\/p>\n

<\/p>\n

 <\/p>\n

<\/span><\/p>\n

End<\/span> Module<\/p>\n

<\/span><\/span><\/p>\n

–<\/font>          <\/span><\/span><\/span>The grouping is used to select only those numbers that have exactly two factors (i.e. they’re prime)<\/font><\/font><\/p>\n<\/h2>\n","protected":false},"excerpt":{"rendered":"

Ingredients: –          Visual Studio 2008 (Beta2 or Higher)   Categories: LINQ-To-Objects     Instructions: –          Open Visual Studio 2008, and Click ‘File\/New Project’. Find and double-click the ‘Console Application’ Icon –         Add the following code:         Module Module1       Sub Main()         Dim primes = GetPrimesInRange(30, 50)           For Each n In primes […]<\/p>\n","protected":false},"author":260,"featured_media":8818,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[192,195],"tags":[83,93,94,117,166],"class_list":["post-5863","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-featured","category-visual-basic","tag-jonathan-aneja","tag-linq-cookbook","tag-linqvb9","tag-orcas","tag-vb2008"],"acf":[],"blog_post_summary":"

Ingredients: –          Visual Studio 2008 (Beta2 or Higher)   Categories: LINQ-To-Objects     Instructions: –          Open Visual Studio 2008, and Click ‘File\/New Project’. Find and double-click the ‘Console Application’ Icon –         Add the following code:         Module Module1       Sub Main()         Dim primes = GetPrimesInRange(30, 50)           For Each n In primes […]<\/p>\n","_links":{"self":[{"href":"https:\/\/devblogs.microsoft.com\/vbteam\/wp-json\/wp\/v2\/posts\/5863","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/devblogs.microsoft.com\/vbteam\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/devblogs.microsoft.com\/vbteam\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/vbteam\/wp-json\/wp\/v2\/users\/260"}],"replies":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/vbteam\/wp-json\/wp\/v2\/comments?post=5863"}],"version-history":[{"count":0,"href":"https:\/\/devblogs.microsoft.com\/vbteam\/wp-json\/wp\/v2\/posts\/5863\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/vbteam\/wp-json\/wp\/v2\/media\/8818"}],"wp:attachment":[{"href":"https:\/\/devblogs.microsoft.com\/vbteam\/wp-json\/wp\/v2\/media?parent=5863"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/vbteam\/wp-json\/wp\/v2\/categories?post=5863"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/vbteam\/wp-json\/wp\/v2\/tags?post=5863"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}