Random generator with constraints

2021 2 26
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更新时间：2021 2 26
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I am getting back into MATLAB and need to create a random generator that provides a matrix of 12 rows by 4 colums of numbers from (1,4), with non repeating numbers in row. And another separate random generator code that can provide a 1 row by 5 colums of numbers for (0,4), with non repeating numbers in row.

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Adam Danz
Adam Danz 2021-2-26

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> I am getting back into MATLAB and need to create a random generator that provides a matrix of 12 rows by 4 colums of numbers from (1,4), with non repeating numbers in row
sz = [12,4];
maxVal = 4;
M = cell2mat(arrayfun(@(i){randperm(maxVal,sz(2))},1:sz(1))');
>And another separate random generator code that can provide a 1 row by 5 colums of numbers for (0,4), with non repeating numbers in row.
V = randperm(5,5).'-1;

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Steven Lord
Steven Lord 2021-2-26
Ran in:

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Ran in:
A = rand(6, 4);
[~, ind] = sort(A, 2)
ind = 6×4
4 1 2 3 4 2 3 1 1 2 3 4 4 2 1 3 2 4 3 1 1 3 2 4

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