Generate a random matrix without repeating any value in row and column.

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Ashuftah Shigri
Ashuftah Shigri 2019-10-20
评论： Bruno Luong 2022-12-4
How can I generate a random matrix without repeating any value in row and column. form "randi" function.
If we generate a matrix.
then the answer may be like this
randi(4,4)
ans =
4 2 3 1
3 4 1 2
1 3 2 4
2 1 4 3
this is just for example not generated matrix.
I have used the "unique" function. by this i can control the repeatition in row only.

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Bruno Luong
Bruno Luong 2019-10-20
编辑：Bruno Luong 2019-10-20
Ran in:
A=mod((0:3)+(0:3)',4)+1;
R=A(randperm(end),randperm(end))
R = 4×4
1 3 4 2 2 4 1 3 3 1 2 4 4 2 3 1
  2 个评论
Pool
Pool 2022-12-4
Is it possible to make this into a 16x4 matrix? with fixed, non-random values?
A=mod((0:3)+(0:15)',2)+1;
r=A(randperm(end),randperm(end))
s=zeros(16,4);
% t=zeros(16,4);
r(r==2)=5;
This does not make unqieu arrays though
Bruno Luong
Bruno Luong 2022-12-4
@Pool It's not possible : You can never have unique values on 16 rows and 4 colums with only 2 values.

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