How can I create a random array like the example C?
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A=[1 1 2 2 7 7 9 9]
B=[3 5 6 8 10 11] : randomly choose all items from B and input between 2 same number of A
for example : C=[1 8 6 1 2 5 3 2 7 11 7 9 10 9]
4 Comments
Jan
on 25 Apr 2019
Please mention the details: Does the result need to have at least one value of B between the equal elements of A? Does the order of elements of B matter? Does A have an even number of elements in every case so the new elements can be inserted at the indices 2, 4, 6, ...? Providing 1 example does not define the problem completely.
Accepted Answer
Stephen23
on 26 Apr 2019
Edited: Stephen23
on 26 Apr 2019
A = [1,1,2,2,7,7,9,9];
B = [3,5,6,8,10,11];
Na = numel(A);
Nb = numel(B);
Xb = randperm(Nb) % to shuffle the order of B.
Xa = randperm(Nb-1,Na/2-1);
Xa = diff([0,sort(Xa),Nb]) % the number of elements of B to pick.
T = [num2cell(A(1:2:Na));mat2cell(B(Xb),1,Xa);num2cell(A(2:2:Na))];
C = [T{:}]
Giving (for example):
Xb =
4 6 3 2 1 5
Xa =
1 2 2 1
C =
1 8 1 2 11 6 2 7 5 3 7 9 10 9
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