create random array in matlab with range of integer

Question

I want to create a random array with values between 0 to 255 but without any looping value, like (0: 255) but its value is scrambled. how to do it?

output like

32, 204, 16, 92, ...

Possible duplicate of Is there a way in Matlab using the pseudo number generator to generate numbers within a specific range? — Leander Moesinger
– Leander Moesinger, Commented Oct 3, 2017 at 15:23

Daniel1000 · Accepted Answer · 2017-10-03 14:58:53Z

2

With really random and possibly repeating numbers:

randi(256,1,256)-1

Every value occuring exactly once, random permutation:

randperm(256)-1

answered Oct 3, 2017 at 14:58

Daniel1000

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Comments

Alex Taylor · Accepted Answer · 2017-10-03 14:59:14Z

0

Use the randperm function.

result = randperm(255);

answered Oct 3, 2017 at 14:59

Alex Taylor

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Laleh · Accepted Answer · 2017-10-03 15:01:21Z

0

I am not sure what you mean by looping but if you want a random array with values between 0 and 255 uniformly distributed you can do this:

a = floor(256*rand(1,10000));

This will give you an array with 10000 values uniformly distributed between 0 and 255

answered Oct 3, 2017 at 15:01

Laleh

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