use std::collections::HashMap;

pub fn count(nucleotide: char, dna: &str) -> Result<usize, char> {
    unimplemented!(
        "How much of nucleotide type '{}' is contained inside DNA string '{}'?",
        nucleotide,
        dna
    );
}

pub fn nucleotide_counts(dna: &str) -> Result<HashMap<char, usize>, char> {
    unimplemented!(
        "How much of every nucleotide type is contained inside DNA string '{}'?",
        dna
    );
}