Problem 44949. Find the Best Hotels

Created by Pooja Lalan

Solve Later

{"parts":[{"partUri":"/matlab/document.xml","contentType":"application/vnd.mathworks.matlab.code.document+xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\"?><w:document xmlns:w=\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\"><w:body><w:p><w:pPr><w:pStyle w:val=\"text\"/><w:jc w:val=\"left\"/></w:pPr><w:r><w:t>Given three input variables:</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"ListParagraph\"/><w:numPr><w:numId w:val=\"1\"/></w:numPr><w:jc w:val=\"left\"/></w:pPr><w:r><w:rPr><w:rFonts w:cs=\"monospace\"/></w:rPr><w:t>hotels</w:t></w:r><w:r><w:t> - a list of hotel names</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"ListParagraph\"/><w:numPr><w:numId w:val=\"1\"/></w:numPr><w:jc w:val=\"left\"/></w:pPr><w:r><w:rPr><w:rFonts w:cs=\"monospace\"/></w:rPr><w:t>ratings</w:t></w:r><w:r><w:t> - their ratings in a city</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"ListParagraph\"/><w:numPr><w:numId w:val=\"1\"/></w:numPr><w:jc w:val=\"left\"/></w:pPr><w:r><w:rPr><w:rFonts w:cs=\"monospace\"/></w:rPr><w:t>cutoff</w:t></w:r><w:r><w:t> - the rating at which you would like to cut off</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/><w:jc w:val=\"left\"/></w:pPr><w:r><w:t>return only the names of those hotels with a rating of cutoff value or above as a column vector of strings</w:t></w:r><w:r><w:t> </w:t></w:r><w:r><w:rPr><w:rFonts w:cs=\"monospace\"/></w:rPr><w:t>good</w:t></w:r><w:r><w:t>.</w:t></w:r></w:p></w:body></w:document>","relationship":null}],"relationships":[{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/document","target":"/matlab/document.xml","relationshipId":"rId1"}]}

<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: 135.3px; display: block; min-width: 0px; padding-block-start: 0px; padding-top: 0px; perspective-origin: 407px 67.65px; transform-origin: 407px 67.65px; vertical-align: baseline; "><div style="block-size: 21px; 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 10.5px; text-align: left; transform-origin: 384px 10.5px; 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: 87px 8px; transform-origin: 87px 8px; unicode-bidi: normal; "><span style="">Given three input variables:</span></span></div><ul style="block-size: 62.8px; counter-reset: list-item 0; font-family: Helvetica, Arial, sans-serif; list-style-type: square; margin-block-end: 20px; margin-block-start: 10px; margin-bottom: 20px; margin-top: 10px; perspective-origin: 391px 31.4px; transform-origin: 391px 31.4px; margin-top: 10px; margin-bottom: 20px; "><li style="background-position-x: 0px; background-position-y: 50%; block-size: 20.9333px; counter-reset: none; display: list-item; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-start: 56px; margin-left: 56px; margin-top: 0px; perspective-origin: 363px 10.4667px; text-align: left; transform-origin: 363px 10.4667px; white-space: pre-wrap; margin-left: 56px; "><span style="background-position-x: 0%; background-position-y: 0%; block-size: auto; display: inline; margin-inline-start: 0px; margin-left: 0px; perspective-origin: 24px 8px; transform-origin: 24px 8px; unicode-bidi: normal; "><span style="font-family: Menlo, Monaco, Consolas, &quot;Courier New&quot;, monospace; perspective-origin: 24px 8.5px; transform-origin: 24px 8.5px; ">hotels</span></span><span style="background-position-x: 0%; background-position-y: 0%; block-size: auto; display: inline; margin-inline-start: 0px; margin-left: 0px; perspective-origin: 69.5px 8px; transform-origin: 69.5px 8px; unicode-bidi: normal; "><span style=""> - a list of hotel names</span></span></li><li style="background-position-x: 0px; background-position-y: 50%; block-size: 20.9333px; counter-reset: none; display: list-item; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-start: 56px; margin-left: 56px; margin-top: 0px; perspective-origin: 363px 10.4667px; text-align: left; transform-origin: 363px 10.4667px; white-space: pre-wrap; margin-left: 56px; "><span style="background-position-x: 0%; background-position-y: 0%; block-size: auto; display: inline; margin-inline-start: 0px; margin-left: 0px; perspective-origin: 28px 8px; transform-origin: 28px 8px; unicode-bidi: normal; "><span style="font-family: Menlo, Monaco, Consolas, &quot;Courier New&quot;, monospace; perspective-origin: 28px 8.5px; transform-origin: 28px 8.5px; ">ratings</span></span><span style="background-position-x: 0%; background-position-y: 0%; block-size: auto; display: inline; margin-inline-start: 0px; margin-left: 0px; perspective-origin: 70px 8px; transform-origin: 70px 8px; unicode-bidi: normal; "><span style=""> - their ratings in a city</span></span></li><li style="background-position-x: 0px; background-position-y: 50%; block-size: 20.9333px; counter-reset: none; display: list-item; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-start: 56px; margin-left: 56px; margin-top: 0px; perspective-origin: 363px 10.4667px; text-align: left; transform-origin: 363px 10.4667px; white-space: pre-wrap; margin-left: 56px; "><span style="background-position-x: 0%; background-position-y: 0%; block-size: auto; display: inline; margin-inline-start: 0px; margin-left: 0px; perspective-origin: 24px 8px; transform-origin: 24px 8px; unicode-bidi: normal; "><span style="font-family: Menlo, Monaco, Consolas, &quot;Courier New&quot;, monospace; perspective-origin: 24px 8.5px; transform-origin: 24px 8.5px; ">cutoff</span></span><span style="background-position-x: 0%; background-position-y: 0%; block-size: auto; display: inline; margin-inline-start: 0px; margin-left: 0px; perspective-origin: 139.5px 8px; transform-origin: 139.5px 8px; unicode-bidi: normal; "><span style=""> - the rating at which you would like to cut off</span></span></li></ul><div style="block-size: 21.5px; 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 10.75px; text-align: left; transform-origin: 384px 10.75px; 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: 326.5px 8px; transform-origin: 326.5px 8px; unicode-bidi: normal; "><span style="">return only the names of those hotels with a rating of cutoff value or above as a column vector of strings</span></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: 2px 8px; transform-origin: 2px 8px; unicode-bidi: normal; "><span style=""> </span></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: 16px 8px; transform-origin: 16px 8px; unicode-bidi: normal; "><span style="font-family: Menlo, Monaco, Consolas, &quot;Courier New&quot;, monospace; perspective-origin: 16px 8.5px; transform-origin: 16px 8.5px; ">good</span></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: 2px 8px; transform-origin: 2px 8px; unicode-bidi: normal; "><span style="">.</span></span></div></div></div>

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14683 Solutions
5682 Solvers

Last Solution submitted on Feb 07, 2023

Last 200 Solutions

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6 Comments

6 Comments

Show 3 older comments

Richard Dezso Kovacs on 10 Nov 2019

You should mention that the answer should be given as a column vector, rather than row vector.

One at this time must examine the assessment code to give the right answer, while I think it should be self-contained in the question itself.

Pooja Lalan on 20 Dec 2019

Thanks Richard. I have modified the problem description to mention this.

KANISHKA RAVI MADISHETTY on 13 May 2021

can anyone tell me the flaw in this code (im still very new to MATLAB)
function good = find_good_hotels(hotels,ratings,cutoff)
for c = 1:10 //the number 10 is a random number
if ratings(c) > cutoff | ratings(c) == cutoff
good = hotels(c);
else x = "not a good hotel"
end
end

Dyuman Joshi on 13 May 2021

@Kanishka, the question does not mention to return "not a good hotel", it only asks to return the names of hotels whose ratings is equalto or more than the threshold.

Isabella Stellitano on 14 Nov 2021

Good problem

Sarah on 1 Dec 2022

very good and challenging problem

Solution Comments

Solution 8898995

1 Comment

1 Comment

Gaurav Shinde on 10 Aug 2022

Can I know how can we solve this with size 12?

Solution 7438175

1 Comment

1 Comment

Mateus Edinger on 26 Jan 2022

I just can't reduce my answer's size to the smallest ones xD

Solution 6970794

1 Comment

1 Comment

Haoran Tian on 26 Nov 2021

solvable

Solution 6931069

1 Comment

1 Comment

Josh Klueber on 21 Nov 2021

one liner

Solution 4571038

2 Comments

2 Comments

Jorden van Leeuwen on 10 Jan 2021

It should be mentioned in the problem that hotels and ratings are column vectors.

My solution
good = hotels(ratings >= cutoff)';
failed because I (imho correctly) assumed that a list is a row vector.

Hello Say on 5 Oct 2021

cool

Solution 4097404

Solution 3957788

2 Comments

2 Comments

Jorden van Leeuwen on 10 Jan 2021

how is the size of a solution calculated?
These solutions with a regexp seem to be designed to get this count low but imho are not the best solutions and should not be allowed as leading solutions. It is more of a keep the size low trick.

Peter Jan Struiving on 26 Mar 2021

Helemaal mee eens Jorden.

Solution 3046630

1 Comment

1 Comment

Andrej Misejka on 3 Oct 2020

The problem is incorrectly defined. The solver doesn't know if "hotel" is a row or column vector in the first place and I am not sure you can use logical signs for strings, that doesn't make sense to me (ie. where is it defined that string "good" is logically greater than "not good").

Solution 2618188

Solution 1919289

1 Comment

1 Comment

Haoyue Jiang on 11 Oct 2020

The leading solution is super concise. I learned something from it.

Solution 1917805

2 Comments

2 Comments

David Motson on 18 Nov 2019

I don't understand how this solution works? The return value is not set?

Nico Noordam on 18 Dec 2019

return only the names of those hotels with a rating of cutoff value or above in an output variable good.

So this solution will fail if rating is equal to cutoff. This is not tested in the asserts!

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Problem 44949. Find the Best Hotels

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Problem 44949. Find the Best Hotels

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