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get possible combinations for 3 elements but 5 columns

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Elysi Cochin
Elysi Cochin 2017-3-7
编辑： KSSV 2017-3-7
with worker set [1 2 3], i need to get the possible number of allotments we can do for 5 work, that is i need a matrix as below
[1 1 1 1 1
2 2 2 2 2
3 3 3 3 3
1 2 3 1 2
1 2 2 3 3
...
....
..
3 3 3 3 1];
all such combinations.... please can someone help me...

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KSSV
KSSV 2017-3-7
编辑：KSSV 2017-3-7
k = randi(3,1000,5) ;
l = unique(k,'rows') ;

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