{"id":5088,"date":"2018-01-10T15:02:27","date_gmt":"2018-01-10T20:02:27","guid":{"rendered":"https:\/\/blogs.mathworks.com\/community\/?p=5088"},"modified":"2020-09-22T12:48:49","modified_gmt":"2020-09-22T16:48:49","slug":"the-cody-fifth-anniversary-challenge","status":"publish","type":"post","link":"https:\/\/blogs.mathworks.com\/community\/2018\/01\/10\/the-cody-fifth-anniversary-challenge\/","title":{"rendered":"The Cody Fifth Anniversary Challenge"},"content":{"rendered":"

Does Cody have birthdays or anniversaries? It seems to me like it should have birthdays, but anyway, it’s been around for five years (actually, almost six by now). Back in October, we announced a contest<\/a> in honor of Cody’s fifth. The really cool thing about this contest is that a panel of distinguished Cody problem authors created a raft of special anniversary puzzles for us. One list\u00a0consisted of easy problems<\/a>, and\u00a0the other list\u00a0was hard<\/a>.<\/p>\n

The contest ended with the new year, so now we see the results. First of all, it was a great success! Lots of new problems, lots of new players, and lots more solutions overall. Of all the Fifth Anniversary problems, the one with the most\u00a0Likes was\u00a0Peng Liu’s\u00a0MATLAB Counter<\/a>,\u00a0in which you use nested functions to make a stateful counter. Even though it was in the easy list, it was difficult in the sense that only 21% of the solutions were correct. But I’ve seen this pattern before; the most satisfying problems are often the ones where you have to work hard but you learn\u00a0a genuinely valuable new skill.<\/p>\n

Incidentally, another “easy” problem that had a similarly low correct\/incorrect ratio was James’s Tick Tock Tick Tock<\/a>. Only 20% of the solutions were correct. But the problem was actually a one-in-five lottery. You had to submit your solution at a time when the number of seconds was divisible by 5! The last “hard” problem was also the very hardest, at least as measured by fewest solvers. It was a fiendish 3-dimensional sliding block puzzle and it too was among the most liked:\u00a0The sliding puzzle 3D<\/a>\u00a0by HH.<\/p>\n

\"\"<\/p>\n

\"\"<\/a><\/p>\n

Here are all 17 badge winners and when they first won their prizes. This is a mighty accomplishment, and this limited-edition badge will never be awarded again.<\/p>\n

23 Oct: Alfonso Nieto-Castanon<\/a>, Daniel Turizo<\/a>
\n30 Oct: LY Cao<\/a>
\n2 Nov: Daniel Meier<\/a>
\n20 Nov: Corneli Keim<\/a>
\n27 Nov: HH<\/a>
\n30 Nov: Daniel Rubin<\/a>
\n14 Dec: Josh<\/a>
\n17 Dec: Osman<\/a>
\n21 Dec: goc3<\/a>,\u00a0Ziheng Hu<\/a>
\n23 Dec: Binbin Qi<\/a>
\n29 Dec: Tim<\/a>,\u00a0Gunther S<\/a>
\n31 Dec: Thomas Steffen<\/a>,\u00a0Peter Cook<\/a>,\u00a0Brendan Gray<\/a><\/p>\n

Congratulations to all these badge winners! I should also point out that, while our special Cody 5 badge competition is over, the problems themselves are still open to all solvers.<\/p>\n

The fifth anniversary also included a raffle. To get entered into the drawing, you just needed to solve one problem, whether from the easy or the hard list. Here are the\u00a0lucky winners, week by week.<\/p>\n

23 Oct: Yehe Liu<\/a>, Joel Cottrell<\/a>
\n30 Oct: Pavol Michalina<\/a>, Gnaneswar Nadh satapathi<\/a>
\n6 Nov: mustafa<\/a>, James<\/a>
\n13 Nov: Heiko<\/a>, Li jw<\/a>
\n20 Nov: Sanghai Guan<\/a>, Viko<\/a>
\n27 Nov: jzv<\/a>, Elmar Zander<\/a>
\n4 Dec: Milos<\/a>, Aditya Deshpande<\/a>
\n11 Dec: Alfonso Nieto-Castanon<\/a>, Rani V.S<\/a>
\n18 Dec: Tilemachos Doganis<\/a>, ward van belle<\/a>
\n25 Dec: Daniel Pereira<\/a>, Jianjiang Hu<\/a><\/p>\n

Current Cody champion Alfonso shows up on both the badge and the raffle lists, demonstrating that he is both smart and<\/em> lucky. Be sure and ask him for\u00a0a winning lottery number, as he could either guess it or calculate it.<\/p>\n

Finally, thanks to everyone who participated in any way. It’s not all about winning. It’s all about learning, and you can’t help but learn a little something every time you play Cody.<\/p>\n","protected":false},"excerpt":{"rendered":"

<\/div>\n

Does Cody have birthdays or anniversaries? It seems to me like it should have birthdays, but anyway, it’s been around for five years (actually, almost six by now). Back in October, we announced… read more >><\/a><\/p>\n","protected":false},"author":69,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[250,265,263],"tags":[],"_links":{"self":[{"href":"https:\/\/blogs.mathworks.com\/community\/wp-json\/wp\/v2\/posts\/5088"}],"collection":[{"href":"https:\/\/blogs.mathworks.com\/community\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.mathworks.com\/community\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.mathworks.com\/community\/wp-json\/wp\/v2\/users\/69"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.mathworks.com\/community\/wp-json\/wp\/v2\/comments?post=5088"}],"version-history":[{"count":16,"href":"https:\/\/blogs.mathworks.com\/community\/wp-json\/wp\/v2\/posts\/5088\/revisions"}],"predecessor-version":[{"id":5126,"href":"https:\/\/blogs.mathworks.com\/community\/wp-json\/wp\/v2\/posts\/5088\/revisions\/5126"}],"wp:attachment":[{"href":"https:\/\/blogs.mathworks.com\/community\/wp-json\/wp\/v2\/media?parent=5088"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.mathworks.com\/community\/wp-json\/wp\/v2\/categories?post=5088"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.mathworks.com\/community\/wp-json\/wp\/v2\/tags?post=5088"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}