Sha256: 665f1a6244ecfdc17b977027be1272ed0302d028a147f49b337cd0e333c9f99e
Contents?: true
Size: 720 Bytes
Versions: 86
Compression:
Stored size: 720 Bytes
Contents
fn ascii(ch: char) -> u8 {
ch as u8
}
fn get_transpose(ch: char) -> char {
if ch.is_digit(10) {
ch
} else {
(ascii('z') - ascii(ch) + ascii('a')) as char
}
}
pub fn encode(plaintext: &str) -> String {
plaintext
.to_lowercase()
.chars()
.filter(|&ch| ch.is_ascii())
.filter(|&ch| ch.is_alphanumeric())
.map(|ch| get_transpose(ch))
.collect::<Vec<char>>()
.chunks(5)
.map(|slice| slice.iter().cloned().collect::<String>())
.collect::<Vec<String>>()
.join(" ")
}
pub fn decode(ciphertext: &str) -> String {
ciphertext
.split::<char>(' ')
.collect::<String>()
.chars()
.map(|ch| get_transpose(ch))
.collect::<String>()
}
Version data entries
86 entries across 86 versions & 1 rubygems