How to reshape matrix without repeating values of matrix?

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SANDEEP SINGH RANA
评论： SANDEEP SINGH RANA 2022-1-6
Hi, For example we have a matrix 4 x 2 and we have to rearrange matrix such that
columns
rows 2 5 % 2 can pair with any below value except 5 or 5 can pair with any value except 2
4 3 % 4 can pair any value below except 3 and above pair
1 6 % 1 can pair with any below value except 6 and above pairs
7 8 % 7 can pair with any below value except 8 and above pairs ( as in this case only one value will be
remains)
This logic should work on any [] x 2 matrix.
Thanks and Regards,
Sandeep

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KSSV
KSSV 2022-1-6
Ran in:
A = [2 5
4 3
1 6
7 8];
[m,n] = size(A) ;
iwant = zeros(m,m) ;
iwant(:,1) = A(:,1) ;
for i = 1:m
idx = setdiff(1:m,i) ;
iwant(i,2:end) = A(idx,2)' ;
end
iwant
iwant = 4×4
2 3 6 8 4 5 6 8 1 5 3 8 7 5 3 6
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KSSV
KSSV 2022-1-6
Ran in:
I gave you all the options possible...pick any randmoly...easy:
A = [2 5
4 3
1 6
7 8];
[m,n] = size(A) ;
iwant = zeros(m,2) ;
iwant(:,1) = A(:,1) ;
for i = 1:m
idx = randsample(setdiff(1:m,i),1) ;
iwant(i,2) = A(idx,2) ;
end
iwant
iwant = 4×2
2 8 4 8 1 5 7 5
SANDEEP SINGH RANA
SANDEEP SINGH RANA 2022-1-6
In this matrix, 2 is pair with 8 and 4 is also pairing with 8. This is not required.

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