5 lines
158 B
OCaml
5 lines
158 B
OCaml
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let rot13 c = match c with
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| 'A'..'M' | 'a'..'m' -> char_of_int (int_of_char c + 13)
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| 'N'..'Z' | 'n'..'z' -> char_of_int (int_of_char c - 13)
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| _ -> c
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