10 lines
206 B
Ruby
10 lines
206 B
Ruby
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# Returns a copy of _s_ with rot13 encoding.
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def rot13(s)
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s.tr('A-Za-z', 'N-ZA-Mn-za-m')
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end
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# Perform rot13 on files from command line, or standard input.
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while line = ARGF.gets
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print rot13(line)
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end
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