Sha256: 5f94a4c8527cfc03e036ba143a05a7694f0070b5c5735d7cf9886bc1512376cf
Contents?: true
Size: 741 Bytes
Versions: 336
Compression:
Stored size: 741 Bytes
Contents
use std::collections::HashMap;
static VALID_NUCLEOTIDES: &'static str = "ACGT";
pub fn count(nucleotide: char, input: &str) -> Result<usize, char> {
let valid = |x: char| { VALID_NUCLEOTIDES.contains(x) };
if valid(nucleotide) && input.chars().all(valid) {
Ok(input.chars().filter(|&c| c == nucleotide).count())
} else {
Err(nucleotide)
}
}
pub fn nucleotide_counts(input: &str) -> Result<HashMap<char, usize>, char> {
let mut map: HashMap<char, usize> = VALID_NUCLEOTIDES.chars().map(|c| (c, 0)).collect();
for nucleotide in input.chars() {
if let Some(n) = map.get_mut(&nucleotide) {
*n += 1;
} else {
return Err(nucleotide);
}
}
Ok(map)
}
Version data entries
336 entries across 336 versions & 1 rubygems