How can I keep values of an array random.

I have an array T=(0 1 2 7 71 158 187).

i wanna generate A=(158 71 2 187 0 152 1)

please tell me a command for generating A.

Answer 1

[madhan ravi]

Note : In your desired result A there appears a number 152 instead of 7 which I guess is perhaps a typo.

Just use random indexing using randperm() or randsample() so that the indices are unique not repeated :

A = T(randperm(numel(T)))
%or
A = T(randsample(numel(T),numel(T)))

Will just leave this here : (Reason: People shouldn't think I edited my answer after the comments below so here is the proof)

[Stephen23]

Note that randi can repeat values, and therefore repeats/misses values of T in the output. This might not be the desired effect (and is not shown in the example).

See my answer for a simple random permutation of the values of T, without any repetition.

[Akira Agata]

If you allow duplication, that's ok. But if not, I would recommend using randperm function.

Answer 2

[Stephen23]

Use randperm to generate a random permutation of that vector:

>> T = [0,1,2,7,71,158,187];
>> A = T(randperm(numel(T)))
A =
     1   187   158     0     7    71     2