could anyone help me to solve the issue with respect to the code
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code:
A=1:7
B=length(A)
idx=randperm(B,1)
disp(idx)
the above code run one time and it displays idx value.
Could anyone help me to run the above code 5 times and for each time idx value should needs to be different.
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回答(3 个)
Soumya Sinha
2019-6-18
I assume that for this case, since you only want idx value to change and not the values of A or B
A = 1:7;
B=length(A);
for i = 1:5
idx = randperm(B,1);
disp(idx);
end
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Soumya Sinha
2019-6-18
That's a perfectly normal behaviour, you might get same numbers on some occasions, when I tried I got all different numbers in some cases and I few repeating. Moreover, randomness wouldn't ensure uniqueness in your answer.
Stephen23
2019-6-18
"What i actually need is idx should be different for each run"
The easiest way is to define them before the loop, e.g.:
A = 1:7
N = numel(A)
V = randperm(B,N)
for k = 1:N
A(k)
V(k)
end
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