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  1. [0,1,3,4,7,9].combination(2){|x| puts x.join(" ") }
Success #stdin #stdout 0.01s 6184KB
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stdin
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Standard input is empty
stdout
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0 1
0 3
0 4
0 7
0 9
1 3
1 4
1 7
1 9
3 4
3 7
3 9
4 7
4 9
7 9
https://ideone.com/ZqxzCc
language:
Ruby (ruby 2.5.5)
created:
1 year ago
visibility:
public

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