Problem 574. Sort numbers by outside digits

Created by Michael Katz

Solve Later

{"relationships":[{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/document","relationshipId":"rId1","target":"/matlab/document.xml"},{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/output","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\"?><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>Sort the array so that they are sorted as if their value was a 5 digit number made from the first three and last two digits of the value, irrespective of the middle digits.</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>For example: the array is: [166552, 12389245, 88234, 74123245], it the return would be sorted as if the numbers were [16652, 12345, 88234, 74145], and therefore the return array would be: [12389245, 166552, 74123245, 88234].</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>The numbers are all integers >= 10000, with no leading 0's.</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

263 Solutions
129 Solvers

Last Solution submitted on Feb 16, 2021

Last 200 Solutions

Problem Comments

1 Comment

1 Comment

goc3 on 15 Mar 2017

Additional test cases have been added.

Solution Comments

Solution 181591

1 Comment

1 Comment

bainhome on 7 May 2015

Using flag"-" to sort string data,impressive!

Solution 75135

1 Comment

1 Comment

Michael Katz on 12 Apr 2012

I did have another solution using mod, but I hadn't thought of num2str. Good job.

Problem Recent Solvers129

Problem Tags

desktop blog

Community Treasure Hunt

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

Start Hunting!