Problem 2091. return row and column indices given 2 values which define a range

Created by Marcel

Solve Later

{"parts":[{"partUri":"/matlab/document.xml","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:jc w:val=\"left\"/></w:pPr><w:r><w:t>Inspired by problem</w:t></w:r><w:r><w:t> </w:t></w:r><w:hyperlink w:docLocation=\"\"><w:r><w:t>http://www.mathworks.co.kr/matlabcentral/cody/problems/856-getting-the-indices-from-a-matrice</w:t></w:r></w:hyperlink><w:r><w:t> Inputs: - matrix A, lower limit, upper limit Ouputs: - indices of matrix elements which are bigger than or equal to lower limit and smaller than upper limit</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>A little complication: let your function be able to deal with a random order of the input arguments.</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>If all input arguments have the same size, assume that the first argument is the \"matrix\" with value(s).</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>Don't use \"find\" and don't use \"regexp\".</w:t></w:r></w:p></w:body></w:document>","relationship":null}],"relationships":[{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/document","target":"/matlab/document.xml","relationshipId":"rId1"}]}

<div style = "text-align: start; line-height: 20.4333px; min-height: 0px; white-space: normal; color: rgb(0, 0, 0); font-family: Menlo, Monaco, Consolas, monospace; font-style: normal; font-size: 14px; font-weight: 400; text-decoration: rgb(0, 0, 0); white-space: normal; "><div style="block-size: 153px; display: block; min-width: 0px; padding-block-start: 0px; padding-top: 0px; perspective-origin: 407px 76.5px; transform-origin: 407px 76.5px; vertical-align: baseline; "><div style="block-size: 63px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 31.5px; text-align: left; transform-origin: 384px 31.5px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; "><span style="block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 62px 8px; transform-origin: 62px 8px; unicode-bidi: normal; "><span style="">Inspired by problem</span></span><span style="block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 2px 8px; transform-origin: 2px 8px; unicode-bidi: normal; "><span style=""> </span></span><a target='_blank' href = "/#null"><span style=""><span style="">http://www.mathworks.co.kr/matlabcentral/cody/problems/856-getting-the-indices-from-a-matrice</span></span></a><span style="block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 2px 8px; transform-origin: 2px 8px; unicode-bidi: normal; "><span style=""> Inputs: - matrix A, lower limit, upper limit Ouputs: - indices of matrix elements which are bigger than or equal to lower limit and smaller than upper limit</span></span></div><div style="block-size: 21px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 10.5px; text-align: left; transform-origin: 384px 10.5px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; "><span style="block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 303.5px 8px; transform-origin: 303.5px 8px; unicode-bidi: normal; "><span style="">A little complication: let your function be able to deal with a random order of the input arguments.</span></span></div><div style="block-size: 21px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 10.5px; text-align: left; transform-origin: 384px 10.5px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; "><span style="block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 316px 8px; transform-origin: 316px 8px; unicode-bidi: normal; "><span style="">If all input arguments have the same size, assume that the first argument is the "matrix" with value(s).</span></span></div><div style="block-size: 21px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 10.5px; text-align: left; transform-origin: 384px 10.5px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; "><span style="block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 124px 8px; transform-origin: 124px 8px; unicode-bidi: normal; "><span style="">Don't use "find" and don't use "regexp".</span></span></div></div></div>

Solve

Solution Stats

372 Solutions
63 Solvers

Last Solution submitted on Feb 23, 2023

Last 200 Solutions

Problem Comments

5 Comments

5 Comments

Show 2 older comments

shahriar memaran on 26 Mar 2017

last test suit gives an error:"'Error using assert The condition input argument must be a scalar logical. Error in TestPoint11 (line 5) assert(and(R9==1,C9==1))"
also even when I'm using find just to check the results of test suits some of them fail. please fix it ... Thank you !

Nikolaos Nikolaou on 17 Jun 2020

HINT!

although the problem does not STATE it you are required to post the solution as a column vector (rowidx colidx that is) . In the case that donnot use magic matrix the solution will pass as row vector too but for the ones that the matrix is magic it wont.

Dyuman Joshi on 1 Dec 2020

As @Shahriar mentioned, the test suits still have problems. Kindly fix it.
#1,#4: assumes x2 is the lower limit and x3 is the upper limit while all other take x2 as upper limit

goc3 on 2 Dec 2020

@Dyuman Joshi: the problem description specifically states that the inputs can be passed in in random order. What you indicate as an error is actually intended.

Dyuman Joshi on 3 Dec 2020

@goc3 I must have overlooked it while solving the problem.
Thanks for pointing it out.

Solution Comments

Solution 1212172

2 Comments

2 Comments

Christian Schröder on 2 Nov 2022

That second line. :D

Stefan Abendroth on 5 Nov 2022

What a hack.

Solution 1145706

1 Comment

1 Comment

shahriar memaran on 26 Mar 2017

My bad on the comment. But still test suits have problems:
#1: assumes x2 is the lower limit and x3 is the upper limit while all other take x2 as upper limit
#4 same issue

Solution 380871

1 Comment

1 Comment

Marcel on 8 Jan 2014

In my own solution I did not use ind2sub.

Solution 380767

2 Comments

2 Comments

Marcel on 8 Jan 2014

Nice solution, I overlooked the potential usage of ind2sub.

J.R.! Menzinger on 9 Jan 2014

You should use 'varargin' here ;-)

take a look: http://www.mathworks.de/matlabcentral/cody/problems/2091-return-row-and-column-indices-given-2-values-which-define-a-range/solutions/382339

Solution 380571

1 Comment

1 Comment

Marcel on 8 Jan 2014

using varargin is also a good suggestion. Thanks.

Problem Recent Solvers63

Problem Tags

Community Treasure Hunt

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

Start Hunting!

Problem 2091. return row and column indices given 2 values which define a range

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers63

Suggested Problems

More from this Author10

Problem Tags

Community Treasure Hunt

Problem 2091. return row and column indices given 2 values which define a range

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers63

Suggested Problems

More from this Author10

Problem Tags

Community Treasure Hunt

Players