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Could anyone help me how to randomly display the values in the selected places

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jaah navi
jaah navi 2019-6-5
关闭： MATLAB Answer Bot 2021-8-20
Could anyone help me how to randomly display the values in any of the selected places
1
3
4
5
8
9
10
11
13
15
of (3,5) matrix under the condition that under the condition that every rows and columns should be selected with one above mentioned places.

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TADA
TADA 2019-6-5
编辑：TADA 2019-6-5
if you meant to fetch values from a random index using above mentioned linear indices:
a = magic(5);
a = a(1:3,:);
validIndices = [1,3,4,5,8,9,10,11,13,15];
i = validIndices(randperm(numel(validIndices),1));
x = a(i)
but if you meant to use them as subsets (i.e a(i,j)), you have a problem, because these subsets are larger than your specified matrix, and will almost always result in an error
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