RosettaCodeData/Task/Knuth-shuffle/J/knuth-shuffle-10.j

]M=: /:~(1 2 3,:2 3 4),(11 2 3,: 0 11 2),(1 1 1,:1 0),:1 1 1,:1 0 1
 1  1 1
 1  0 0

 1  1 1
 1  0 1

 1  2 3
 2  3 4

11  2 3
 0 11 2