18 lines
698 B
Plaintext
18 lines
698 B
Plaintext
fn rot13(string: String) -> String {
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let alphabet = [
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'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm',
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'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'
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];
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let upper_alphabet: Vec<_> = alphabet.iter().map(|c| c.to_ascii_uppercase()).collect();
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string.chars()
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.map(|c| *alphabet.iter()
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.chain(alphabet.iter())
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.chain(upper_alphabet.iter())
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.chain(upper_alphabet.iter())
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.skip_while(|&x| *x != c)
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.nth(13)
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.unwrap_or(&c))
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.collect()
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}
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