Problem 53980. Determine whether a player solved a Cody problem

Created by ChrisR

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<div style = "text-align: start; line-height: 20.4333px; min-height: 0px; white-space: normal; color: rgb(0, 0, 0); font-family: Menlo, Monaco, Consolas, monospace; font-style: normal; font-size: 14px; font-weight: 400; text-decoration: rgb(0, 0, 0); white-space: normal; "><div style="block-size: 156px; display: block; min-width: 0px; padding-block-start: 0px; padding-top: 0px; perspective-origin: 407px 78px; transform-origin: 407px 78px; vertical-align: baseline; "><div style="block-size: 105px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 52.5px; text-align: left; transform-origin: 384px 52.5px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; "><span style="block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 384px 8px; transform-origin: 384px 8px; unicode-bidi: normal; "><span style="">Write a function to determine whether a player has solved the specified Cody problems. The problem numbers are specified as a vector, and the player names are specified either as a character vector for a single name or a cell array of character vectors for multiple names. Because some names are not unique, the player IDs are included as well. Return 1 if the player solved the problem, 0 if the player did not solve the problem, and -1 if the problem does not exist. If there are </span></span><span style="font-family: &quot;STIXGeneral&quot;, &quot;STIXGeneral-webfont&quot;, serif; font-style: italic; font-weight: 400; color: rgb(0, 0, 0);">m</span><span style="block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 39.0833px 8px; transform-origin: 39.0833px 8px; unicode-bidi: normal; "><span style=""> players and </span></span><span style="font-family: &quot;STIXGeneral&quot;, &quot;STIXGeneral-webfont&quot;, serif; font-style: italic; font-weight: 400; color: rgb(0, 0, 0);">n</span><span style="block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 122.908px 8px; transform-origin: 122.908px 8px; unicode-bidi: normal; "><span style=""> problems, the first output should be an </span></span><span style="vertical-align:-5px"><img src="data:image/png;base64,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" alt="mxn" style="width: 37.5px; height: 18px;" width="37.5" height="18"></span><span style="block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 216.258px 8px; transform-origin: 216.258px 8px; unicode-bidi: normal; "><span style=""> matrix. The second output should be a cell array of the problem titles.</span></span></div><div style="block-size: 42px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 21px; text-align: left; transform-origin: 384px 21px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; "><span style="block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 369.883px 8px; transform-origin: 369.883px 8px; unicode-bidi: normal; "><span style="">I plan to check the tests regularly as players solve more problems. If you spot a problem, please feel free to contact me through </span></span><a target='_blank' href = "https://www.mathworks.com/matlabcentral/profile/authors/1887879"><span style=""><span style="">my profile page</span></span></a><span style="block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 3.88333px 8px; transform-origin: 3.88333px 8px; unicode-bidi: normal; "><span style="">. </span></span></div></div></div>

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31 Solutions
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Last Solution submitted on Dec 10, 2022

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William on 15 Feb 2022

Chris -- The correct y-matrices for tests 3 and 5 seem to have changed since this problem was written.

ChrisR on 16 Feb 2022

Thanks. I updated test 3. I'm seeing that test 5 still works.

Nikolaos Nikolaou on 17 Mar 2022

Chris plz run my solution , as there are a bunch of issues with the test suite. In test 3 in particular : ['Guess the card in Fitch Cheney’s five-card trick'] . Am not sure as to why that matrix is there at all

ChrisR on 19 Mar 2022

Nikolaos, thanks for pointing out the extraneous brackets. They do not affect the tests, and the tests seem to work. I'll look through your code to see what's going on.

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Solution 8460810

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1 Comment

Dyuman Joshi on 29 May 2022

Has webread gotten slow? Or it appears slow because of the amount of data it reads corresponding to the webpage?

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Problem 53980. Determine whether a player solved a Cody problem

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Problem 53980. Determine whether a player solved a Cody problem

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