Created
May 29, 2021 20:14
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| def caesar([], _n), do: [] | |
| def caesar([head | tail], n) do | |
| with lower = ?A, | |
| upper = ?z + 1 do | |
| [rem(head + n - lower, upper - lower) + lower | caesar(tail, n)] | |
| end | |
| end |
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