Sha256: 7f87f8639e33028781154cacaa56be9a08d6888b365f4ad653e3eb9c53a057d9
Contents?: true
Size: 1.42 KB
Versions: 395
Compression:
Stored size: 1.42 KB
Contents
use std::fmt;
static ROMAN_MAP: [(usize, &'static str); 13] = [(1, "I"),
(4, "IV"),
(5, "V"),
(9, "IX"),
(10, "X"),
(40, "XL"),
(50, "L"),
(90, "XC"),
(100, "C"),
(400, "CD"),
(500, "D"),
(900, "CM"),
(1000, "M")];
pub struct Roman {
num: usize,
}
impl From<usize> for Roman {
fn from(i: usize) -> Self {
Roman::new(i)
}
}
impl fmt::Display for Roman {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
let mut start = self.num.clone();
let mut result = String::new();
for &(numeric, roman_string) in ROMAN_MAP.into_iter().rev() {
while start >= numeric {
result.push_str(roman_string);
start = start - numeric;
}
}
write!(f, "{}", result)
}
}
impl Roman {
fn new(num: usize) -> Roman {
Roman { num: num }
}
}
Version data entries
395 entries across 395 versions & 1 rubygems