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  1. [0,1,4,5,6,8,9].combination(2){|x| puts x.join(" ") }
Success #stdin #stdout 0.01s 6292KB
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stdin
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Standard input is empty
stdout
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0 1
0 4
0 5
0 6
0 8
0 9
1 4
1 5
1 6
1 8
1 9
4 5
4 6
4 8
4 9
5 6
5 8
5 9
6 8
6 9
8 9
https://ideone.com/rdv2V9
language:
Ruby (ruby 2.5.5)
created:
302 days ago
visibility:
public

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