Re: Maths

J'ai enfin le temps d'avancer. Comme toi j'ai même hésité à coder. Pour la diversité je poste ma réponse rust

useregex::Regex;
usestd::env;
usestd::io::{self,BufRead};
fn course(time: u64,distance: u64)-> u64 {
letdelta=(time*time)-(4*distance);
ifdelta<=0{
return0;
}else{
letsqrt=(deltaasf64).sqrt();
lett=timeasf64;
letx1=(-t+sqrt)/-2f64;
letx2=(-t-sqrt)/-2f64;
letmutmin=x1.abs().ceil()asu64;
letmutmax=x2.abs().floor()asu64;
if(time-min)*min==distance{
min+=1;
}
if(time-max)*max==distance{
max-=1;
}
returnmax-min+1;
}
}
fn part1()-> u64 {
lettoken_pattern=Regex::new(r"(\d+)").unwrap();
letmuttimes: Vec<u64>=Vec::new();
letmutdistances: Vec<u64>=Vec::new();
forlineinio::stdin().lock().lines(){
letl=line.unwrap();
ifl.starts_with("Time:"){
for(_,[seed])intoken_pattern.captures_iter(&l).map(|c|c.extract()){
times.push(seed.parse::<u64>().unwrap());
}
}elseifl.starts_with("Distance:"){
for(_,[seed])intoken_pattern.captures_iter(&l).map(|c|c.extract()){
distances.push(seed.parse::<u64>().unwrap());
}
}
}
letmutresult: u64 =1;
for(time,distance)intimes.iter().zip(distances.iter()){
letways=course(*time,*distance);
result*=ways;
}
returnresult;
}
fn part2()-> u64 {
lettoken_pattern=Regex::new(r"(\d+)").unwrap();
letmuttimes="".to_owned();
letmutdistances="".to_owned();
forlineinio::stdin().lock().lines(){
letl=line.unwrap();
ifl.starts_with("Time:"){
for(_,[seed])intoken_pattern.captures_iter(&l).map(|c|c.extract()){
times.push_str(seed);
}
}elseifl.starts_with("Distance:"){
for(_,[seed])intoken_pattern.captures_iter(&l).map(|c|c.extract()){
distances.push_str(seed);
}
}
}
lettime=times.parse::<u64>().unwrap();
letdistance=distances.parse::<u64>().unwrap();
returncourse(time,distance);
}
fn main(){
letargs: Vec<String>=env::args().collect();
ifargs.len()>1&&args[1]=="part2"{
println!("Part 2: {}",part2());
}else{
println!("Part 1: {}",part1());
}
}

https://linuxfr.org/users/barmic/journaux/y-en-a-marre-de-ce-gros-troll