Problem 1999. Bleed non-zeros to the right using REGEXP, and that sort of cheatcodess...

Created by J-G van der Toorn

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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>This one is quite similar to</w:t></w:r><w:r><w:t> </w:t></w:r><w:hyperlink w:docLocation=\"http://www.mathworks.nl/matlabcentral/cody/problems/1998-bleed-non-zeros-to-the-right\"><w:r><w:t>http://www.mathworks.nl/matlabcentral/cody/problems/1998-bleed-non-zeros-to-the-right</w:t></w:r></w:hyperlink><w:r><w:t>.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>But this time you are allowed to use regexp, regexprep, and regexpi. In fact, you are encouraged to do so, since I expect creative solutions, using dynamic regular expressions (</w:t></w:r><w:r><w:t> </w:t></w:r><w:hyperlink w:docLocation=\"http://www.mathworks.nl/help/matlab/matlab_prog/dynamic-regular-expressions.html\"><w:r><w:t>http://www.mathworks.nl/help/matlab/matlab_prog/dynamic-regular-expressions.html</w:t></w:r></w:hyperlink><w:r><w:t> ).</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>You get a vector, some values and a lot of zeroes. Every zero is replaced by the first non-zero element to its left.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>For example, </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>[1 0 0 2 0]</w:t></w:r><w:r><w:t> becomes</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>[1 1 1 2 2]</w:t></w:r><w:r><w:t> and</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>[0 0 -12 13 0 i 0 -i 76.54321 0 0]</w:t></w:r><w:r><w:t> becomes</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>[0 0 -12 13 13 i i -i 76.54321 76.54321 76.54321]</w:t></w:r><w:r><w:t>.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Is it even easier now, or not? Still,</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>eval</w:t></w:r><w:r><w:t> and friends are forbidden.</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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Last Solution submitted on Jan 29, 2020

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dynamic regular expressions vector

Problem 1999. Bleed non-zeros to the right using REGEXP, and that sort of cheatcodess...

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Problem 1999. Bleed non-zeros to the right using REGEXP, and that sort of cheatcodess...

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Last 200 Solutions

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