Problem 751. Implement simple rotation cypher

Created by Doug Hull

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{"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>If given a letter from the set:</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"code\"/></w:pPr><w:r><w:t><![CDATA[[abc...xyz]]]></w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>and a shift, implement a shift cypher.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Example:</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"code\"/></w:pPr><w:r><w:t><![CDATA['abc']]></w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>with a shift of -1 yields</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"code\"/></w:pPr><w:r><w:t><![CDATA['zab']]></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>"}]}

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2599 Solutions
1219 Solvers

Last Solution submitted on Jul 25, 2020

Last 200 Solutions

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2 Comments

2 Comments

nhagen on 19 Mar 2015

outStr=char(mod(inStr+shift-97,26)+97);

jo gayong on 5 Jul 2019

I find this problem challenging.

Solution Comments

Solution 1094337

1 Comment

1 Comment

TAYALAN SIVALINGAM on 29 Dec 2016

Solution 429933

1 Comment

1 Comment

Liang MA on 10 Apr 2014

Covered negative shift this time

Solution 424878

1 Comment

1 Comment

Anthony on 9 Apr 2014

very straight forward solution that passes test suite but does not handle example in description correctly.

Solution 342653

1 Comment

1 Comment

shen on 31 Oct 2013

hello, what if shift >= 52 or shift < 0?

Solution 228775

1 Comment

1 Comment

Daniel Pereira on 16 Apr 2013

Does this work for negative shifts?

Solution 135228

1 Comment

1 Comment

Nicholas Howe on 5 Oct 2012

This is a sneaky way to get around the prohibition against using eval!

Problem Recent Solvers1219

Problem Tags

asee cipher cryptography encoding lookup table modular arithmetic substitution cipher

Problem 751. Implement simple rotation cypher

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Problem 751. Implement simple rotation cypher

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Last 200 Solutions

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Problem Recent Solvers1219

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