{"id":1348,"date":"2012-04-18T11:34:16","date_gmt":"2012-04-18T10:34:16","guid":{"rendered":"http:\/\/roboblog.fatal-fury.de\/?p=1348"},"modified":"2012-04-18T11:34:16","modified_gmt":"2012-04-18T10:34:16","slug":"wahrscheinlichkeit-dass-von-x-leute-zwei-am-selben-tag-geburstag-haben","status":"publish","type":"post","link":"http:\/\/roboblog.fatal-fury.de\/?p=1348","title":{"rendered":"Wahrscheinlichkeit, dass von X Leute zwei am selben Tag Geburstag haben..."},"content":{"rendered":"<p>Schei\u00df Wahrscheinlichkeitsrechung geht gegen jede Intuition.<\/p>\n<pre>\r\nAnz. Leute    WK f\u00fcr Gebtag am selben Tag\r\n     25                     56%\r\n     24                     53%\r\n     23                     50%\r\n     22                     47%\r\n     21                     44%\r\n<\/pre>\n<p>Hier noch ein nettes Bildchen...<br \/>\n<div id=\"attachment_1350\" style=\"width: 160px\" class=\"wp-caption alignnone\"><a href=\"http:\/\/roboblog.fatal-fury.de\/wp-content\/uploads\/2012\/04\/WKscheisse.png\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-1350\" src=\"http:\/\/roboblog.fatal-fury.de\/wp-content\/uploads\/2012\/04\/WKscheisse-150x150.png\" alt=\"Wahrscheinlichkeit, dass von X Leute zwei am selben Tag Geburstag haben...\" title=\"WKscheisse\" width=\"150\" height=\"150\" class=\"size-thumbnail wp-image-1350\" \/><\/a><p id=\"caption-attachment-1350\" class=\"wp-caption-text\">Wahrscheinlichkeit, dass von X Leute zwei am selben Tag Geburstag haben...<\/p><\/div><\/p>\n<p>Und mein Programm:<\/p>\n<pre><code>\r\ntemplate< typename T >\r\nstd::ostream& operator<< (std::ostream& o, vector< T > const& vec)\r\n{\r\n    for(size_t i = 0; i< vec.size(); i++)\r\n        o << vec.at(i) << \" \";\r\n  return o;\r\n}\r\n\r\n\/\/ gebrustagstest\r\n\/\/ 50WK dass 25? leute am gleichen tag geb. haben\r\nint main() {\r\n\r\n    int anzLeute = 61;\r\n\r\n    vector <int > geburstage(anzLeute);\r\n    int anzDoppelte = 0;\r\n    int anzIterationen = 1e7;\r\n    srand(time(0));\r\n\r\n    cout << \"Iterationen: \"  << anzIterationen << \"\\n\";\r\n\r\n    for(int leute = 50; leute < anzLeute; leute++) {\r\n        geburstage.resize(leute);\r\n        anzDoppelte = 0;\r\n\/\/        cout << \"WK fuer \" << anzLeute << \" Leute, dass sie am selben Tag Geburstag haben: \";\r\n        for(int iterationen = 0; iterationen < anzIterationen; iterationen++) {\r\n            \/\/ zufallsgeburstage holen\r\n            for(int i = 0; i < leute; i++)\r\n                geburstage[i] = rand() % 365 + 1;\r\n\r\n            \/\/ sind doppelte vorhanden?\r\n            sort(geburstage.begin(), geburstage.end());\r\n            vector< int >::iterator it = adjacent_find (geburstage.begin(), geburstage.end());\r\n            if (it!=geburstage.end()) {\r\n              anzDoppelte++;\r\n            }\r\n        }\r\n        cout << leute << \" \" << 100. * anzDoppelte \/ anzIterationen << \"\\n\";\r\n    }\r\n    return 0;\r\n}\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Schei\u00df Wahrscheinlichkeitsrechung geht gegen jede Intuition. Anz. Leute WK f\u00fcr Gebtag am selben Tag 25 56% 24 53% 23 50% 22 47% 21 44% Hier noch ein nettes Bildchen... Und mein Programm: template< typename T > std::ostream&#038; operator const&#038; vec) { for(size_t i = 0; i< vec.size(); i++) o\n<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[14,17],"class_list":["post-1348","post","type-post","status-publish","format-standard","hentry","category-allgemein","tag-c","tag-cpp"],"_links":{"self":[{"href":"http:\/\/roboblog.fatal-fury.de\/index.php?rest_route=\/wp\/v2\/posts\/1348","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/roboblog.fatal-fury.de\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/roboblog.fatal-fury.de\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/roboblog.fatal-fury.de\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/roboblog.fatal-fury.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1348"}],"version-history":[{"count":4,"href":"http:\/\/roboblog.fatal-fury.de\/index.php?rest_route=\/wp\/v2\/posts\/1348\/revisions"}],"predecessor-version":[{"id":1353,"href":"http:\/\/roboblog.fatal-fury.de\/index.php?rest_route=\/wp\/v2\/posts\/1348\/revisions\/1353"}],"wp:attachment":[{"href":"http:\/\/roboblog.fatal-fury.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1348"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/roboblog.fatal-fury.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1348"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/roboblog.fatal-fury.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1348"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}