Problem 548. How many palindromes?

Created by AMITAVA BISWAS

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=\"ListParagraph\"/><w:numPr><w:numId w:val=\"1\"/></w:numPr></w:pPr><w:r><w:t>Given a set of letters, count all possible palindromes, using all of those letters.</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:t>For example, if the set is {'A' 'A' 'A'} then the number is 1.</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:t>If the set is {'A 'A' 'B'} then the number is 1.</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:t>If the set is {'A' 'B' 'C'} then the number is 0.</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

53 Solutions
22 Solvers

Last Solution submitted on Jul 01, 2021

Last 200 Solutions

Problem Comments

Solution Comments

Solution 1495921

1 Comment

1 Comment

Rafael S.T. Vieira on 5 Sep 2020

I've tested all permutations, bainhome, and the test suite results are correct. Test case 4 is due to ABABA and BAAAB, which are two different cases. It is not possible to do the same with test case 5. Since A and B are repeated even times.

Problem Recent Solvers22

Problem Tags

palindrome

Community Treasure Hunt

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

Start Hunting!

Problem 548. How many palindromes?

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers22

Suggested Problems

More from this Author100

Problem Tags

Community Treasure Hunt

Problem 548. How many palindromes?

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers22

Suggested Problems

More from this Author100

Problem Tags

Community Treasure Hunt

Players