externcrate aho_corasick;externcrate regex;// use aho_corasick::AcAutomaton;
fnmain(){// let mut input = String::with_capacity(10 * 1024 * 1024);
// io::stdin().read_to_string(&mut input).unwrap();
// let input = include_str!("/tmp/regex-dna-input");
let input =include_str!("/home/andrew/tmp/regex-dna.fasta");// let re = r">[^\n]*\n|\n";
// let re = r"[ -~]*ABCDEFGHIJKLMNOPQRSTUVWXYZ$";
// let re = "H";
// let re = "agggtaaa|tttaccct";
let re ="[cgt]gggtaaa|tttaccc[acg]";// let re = "a[act]ggtaaa|tttacc[agt]t";
let re =regex::Regex::new(re).unwrap();// re.replace_all(&input, ::regex::NoExpand("(a|c|t)"));
// re.replace_all(&input, ::regex::NoExpand(""));
println!("{}", re.find_iter(&input).count());// let aut = AcAutomaton::new(vec!["agggtaaa", "tttaccct"]);
// let aut = AcAutomaton::new(vec![
// "cgggtaaa", "ggggtaaa", "tgggtaaa",
// "tttaccca", "tttacccc", "tttacccg",
// ]);
// println!("{}", aut.find(&input).count());
}