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\$\begingroup\$ I like the recursive way, intuitive but still short. As for easy challenges, I try to intermix them among more medium-difficulty challenges because those tend to be more interesting. but I always have a few of these laying around if I run out of ideas :P \$\endgroup\$
– noodle person
Commented Jul 3 at 11:14
\$\begingroup\$ @Dingus thanks for your suggestion! Considering the output, I would rather stick to the output type I have already chosen, as a list. \$\endgroup\$
– int 21h Glory to Ukraine
Commented Jul 4 at 7:29
2

\$\begingroup\$ 37 bytes \$\endgroup\$
– G B
Commented Jul 4 at 7:30
\$\begingroup\$ @GB fantastic! the asterisk is not necessary, or have I missed something? \$\endgroup\$
– int 21h Glory to Ukraine
Commented Jul 4 at 7:41
2

\$\begingroup\$ You get a nested list if you don't "splat". You are not seeing it because puts flattens the result. \$\endgroup\$
– G B
Commented Jul 4 at 11:11

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