Problem 641. Make a random, non-repeating vector.

Created by Doug Hull

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=\"text\"/></w:pPr><w:r><w:t>This is a basic MATLAB operation. It is for instructional purposes.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><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>If you want to get a random permutation of integers</w:t></w:r><w:r><w:t> </w:t></w:r><w:hyperlink w:docLocation=\"http://www.mathworks.com/help/techdoc/ref/randperm.html\"><w:r><w:t>randperm</w:t></w:r></w:hyperlink><w:r><w:t> will help.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Given n, put the integers [1 2 3... N] in a random order.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Yes, the test suite is not conclusive, but it is pretty close!</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

4176 Solutions
2803 Solvers

Last Solution submitted on Jan 18, 2021

Last 200 Solutions

Problem Comments

Solution Comments

Solution 3205506

1 Comment

1 Comment

Muhammad Akmal Afibuddin Putra on 14 Oct 2020

thanks for the clue at description

Solution 2586403

1 Comment

1 Comment

Piero Cimule on 20 Jun 2020

vec = randperm(n);

Solution 1917732

1 Comment

1 Comment

Timothy Chavez on 31 Aug 2019

This solution seems to run correctly in MATLAB (desktop)... can anyone tell me why it is coming back with an "Assertion Failed"?

function vec = makeRandomOrdering(n)
vec = zeros(1, numel(n));
flags = zeros(1, numel(n));
index = 1;
while (sum(flags) ~= numel(n))
pos = randi(numel(n));
if (flags(pos) ~= 1)
vec(index) = n(pos);
index = index + 1;
flags(pos) = 1;
end
end
end

Problem Recent Solvers2803

Problem Tags

Community Treasure Hunt

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

Start Hunting!

Problem 641. Make a random, non-repeating vector.

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers2803

Suggested Problems

More from this Author52

Problem Tags

Community Treasure Hunt

Problem 641. Make a random, non-repeating vector.

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers2803

Suggested Problems

More from this Author52

Problem Tags

Community Treasure Hunt

Players