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  1. [0,1,2,3,4,5,7,9].combination(4){|x| puts x.join(" ") }
Success #stdin #stdout 0.01s 6416KB
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0 1 2 3
0 1 2 4
0 1 2 5
0 1 2 7
0 1 2 9
0 1 3 4
0 1 3 5
0 1 3 7
0 1 3 9
0 1 4 5
0 1 4 7
0 1 4 9
0 1 5 7
0 1 5 9
0 1 7 9
0 2 3 4
0 2 3 5
0 2 3 7
0 2 3 9
0 2 4 5
0 2 4 7
0 2 4 9
0 2 5 7
0 2 5 9
0 2 7 9
0 3 4 5
0 3 4 7
0 3 4 9
0 3 5 7
0 3 5 9
0 3 7 9
0 4 5 7
0 4 5 9
0 4 7 9
0 5 7 9
1 2 3 4
1 2 3 5
1 2 3 7
1 2 3 9
1 2 4 5
1 2 4 7
1 2 4 9
1 2 5 7
1 2 5 9
1 2 7 9
1 3 4 5
1 3 4 7
1 3 4 9
1 3 5 7
1 3 5 9
1 3 7 9
1 4 5 7
1 4 5 9
1 4 7 9
1 5 7 9
2 3 4 5
2 3 4 7
2 3 4 9
2 3 5 7
2 3 5 9
2 3 7 9
2 4 5 7
2 4 5 9
2 4 7 9
2 5 7 9
3 4 5 7
3 4 5 9
3 4 7 9
3 5 7 9
4 5 7 9
https://ideone.com/otDhCH
language:
Ruby (ruby 2.5.5)
created:
1 year ago
visibility:
public

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