Problem 44949. Find the Best Hotels

Created by Pooja Lalan

Solve Later

{"relationships":[{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/document","targetMode":"","relationshipId":"rId1","target":"/matlab/document.xml"},{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/output","targetMode":"","relationshipId":"rId2","target":"/matlab/output.xml"}],"parts":[{"partUri":"/matlab/document.xml","relationship":[],"contentType":"application/vnd.mathworks.matlab.code.document+xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<w:document xmlns:w=\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\"><w:body><w:p><w:pPr><w:pStyle w:val=\"text\"/></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: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: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: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: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>"},{"partUri":"/matlab/output.xml","contentType":"text/xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\" ?><embeddedOutputs><metaData><evaluationState>manual</evaluationState><layoutState>code</layoutState><outputStatus>ready</outputStatus></metaData><outputArray type=\"array\"/><regionArray type=\"array\"/></embeddedOutputs>"}]}

Solve

Solution Stats

9505 Solutions
3453 Solvers

Last Solution submitted on Sep 27, 2021

Last 200 Solutions

Problem Comments

4 Comments

4 Comments

Show 1 older comment

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.

Solution Comments

Solution 4571038

1 Comment

1 Comment

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.

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!

Problem Recent Solvers3453

Problem Tags

indexing logical

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Problem 44949. Find the Best Hotels

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers3453

Suggested Problems

More from this Author13

Problem Tags

Community Treasure Hunt

Problem 44949. Find the Best Hotels

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers3453

Suggested Problems

More from this Author13

Problem Tags

Community Treasure Hunt

Players