{"id":9380,"date":"2025-03-31T09:33:10","date_gmt":"2025-03-31T08:33:10","guid":{"rendered":"https:\/\/solidt.eu\/site\/?p=9380"},"modified":"2025-03-31T09:45:11","modified_gmt":"2025-03-31T08:45:11","slug":"c-cartesian-product","status":"publish","type":"post","link":"https:\/\/solidt.eu\/site\/c-cartesian-product\/","title":{"rendered":"C# Cartesian product"},"content":{"rendered":"\n<div style=\"height: 250px; position:relative; margin-bottom: 50px;\" class=\"wp-block-simple-code-block-ace\"><pre class=\"wp-block-simple-code-block-ace\" style=\"position:absolute;top:0;right:0;bottom:0;left:0\" data-mode=\"csharp\" data-theme=\"monokai\" data-fontsize=\"14\" data-lines=\"Infinity\" data-showlines=\"true\" data-copy=\"false\">public static IEnumerable&lt;IEnumerable&lt;T>> Cartesian&lt;T>(IEnumerable&lt;IEnumerable&lt;T>> sequences)\n{\n    return sequences.Aggregate(Enumerable.Repeat(Enumerable.Empty&lt;T>(), 1), (accumulator, sequence) => accumulator.SelectMany(acc => sequence.Select(item => acc.Append(item))));\n}\n\n\npublic static IEnumerable&lt;IEnumerable&lt;T>> CartesianRecursive&lt;T>(IEnumerable&lt;IEnumerable&lt;T>> sequences)\n{\n    if (!sequences.Any())\n    {\n        yield return Enumerable.Empty&lt;T>();\n        yield break;\n    }\n\n    var firstSet = sequences.First();\n    var remainderSets = CartesianRecursive(sequences.Skip(1));\n\n    foreach (var item in firstSet)\n    {\n        foreach (var remainder in remainderSets)\n        {\n            yield return new[] { item }.Concat(remainder);\n        }\n    }\n}\n<\/pre><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-9380","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/posts\/9380","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/comments?post=9380"}],"version-history":[{"count":4,"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/posts\/9380\/revisions"}],"predecessor-version":[{"id":9384,"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/posts\/9380\/revisions\/9384"}],"wp:attachment":[{"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/media?parent=9380"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/categories?post=9380"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/solidt.eu\/site\/wp-json\/wp\/v2\/tags?post=9380"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}