MATLAB: How to create a matrix with a randomized permutation of integers

permutationssliding puzzle

Alternatively: What is the matrix equivalent of randperm(n,k)?

I can't figure out a simple way to do this.

Best Answer

Can you accomplish what you want by simply reshaping a random vector into a matrix?

reshape(randperm(16,16),[4,4])
ans =
     4    12    11    15
     7     5    13     9
    14     8     2     1
     6    10     3    16

Related Solutions

MATLAB: How to sort a matrix in a random order

E.g.,

>> x = reshape(1:24,4,6)
x =
     1     5     9    13    17    21
     2     6    10    14    18    22
     3     7    11    15    19    23
     4     8    12    16    20    24
>> x(:) = x(randperm(numel(x)))
x =
     7    12     3    19    16    23
    20    24    10    11     1    17
    21    14     8     5    13    18
     6    22    15     4     2     9

MATLAB: Create a 20×24 matrix with each individual column with random integers without duplicate


iwant = zeros(20,24) ; 
for i = 1:24
    iwant(:,i) = randperm(20,20);
end

Best Answer

Related Solutions

MATLAB: How to sort a matrix in a random order

MATLAB: Create a 20×24 matrix with each individual column with random integers without duplicate

Related Question