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Ruby, 33 bytes ->n,m{[*(0...n*m).each_slice(m)]} Try it online!
Answer
#1: Initial revision
by
south
·
2022-04-30T02:02:04Z (over 2 years ago)
# [Ruby](https://www.ruby-lang.org/en/), 33 bytes
```
->n,m{[*(0...n*m).each_slice(m)]}
```
[Try it online!](https://tio.run/##KypNqvz/P03BVkHXLk8ntzpaS8NAT08vTytXUy81MTkjvjgnMzlVI1cztparQEErLdpIxzhWB8Qw1TGL/f8fAA)