generate unrepeated pairs from randi

Question

mingcheng nie 2023-9-2

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2016006-generate-unrepeated-pairs-from-randi

编辑： Bruno Luong 2023-9-2

I have two variables A and B. They are independently generated from randi with different range. For example, A=randi([0,5],1,5); B=randi([-3,3],1,5);

Now I assume the element in A along with the corresponding element in B consist a pair C, where C is of size 1×5. However, I don't want any pair in C is repeated. If repeated, just generate B again until the pair is unrepeated. Is there any simple code can realize this?

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Dyuman Joshi 2023-9-2

Did you mean that C is 2x5?

Also, to confirm, if there is a repeated pair, you just want to regenerate B?

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Bruno Luong 2023-9-2

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2016006-generate-unrepeated-pairs-from-randi#answer_1299821

编辑：Bruno Luong 2023-9-2

在 MATLAB Online 中打开

a = 0:5;
b = -3:3;
n = 20; % 5 in your case
na = length(a);
nb = length(b);
[A,B] = ind2sub([na nb], randperm(na*nb, n));
A = a(A);
B = b(B);
C = [A(:) B(:)]
C = 20×2
     5    -1
     2     2
     4     1
     5    -3
     3    -1
     1     3
     1     2
     1    -2
     1     1
     4    -2