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day2: performance and adopt new duration print

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This commit is contained in:
Keenan Tims 2024-12-01 23:02:00 -08:00
parent ec2651c3e4
commit b24593a469
Signed by: ktims
GPG Key ID: 11230674D69038D4
1 changed files with 25 additions and 21 deletions
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46
2/src/main.rs
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@ -11,7 +11,7 @@ fn get_input() -> InputIter {
br.lines()
}
fn duration_format(duration: &Duration) -> String {
fn duration_format(duration: Duration) -> String {
match duration.as_secs_f64() {
x if x > 1.0 => format!("{:.3}s", x),
x if x > 0.010 => format!("{:.3}ms", x * 1e3),
@ -20,23 +20,18 @@ fn duration_format(duration: &Duration) -> String {
}
fn main() {
let input = get_input();
let start = Instant::now();
let ans1 = problem1(get_input());
let duration = start.elapsed();
println!(
"Problem 1 solution: {} [{}]",
ans1,
duration_format(&duration)
);
let ans1 = problem1(input);
let duration1 = start.elapsed();
println!("Problem 1 solution: {} [{}]", ans1, duration_format(duration1));
let input = get_input();
let start = Instant::now();
let ans2 = problem2(get_input());
let duration = start.elapsed();
println!(
"Problem 2 solution: {} [{}]",
ans2,
duration_format(&duration)
);
let ans2 = problem2(input);
let duration2 = start.elapsed();
println!("Problem 2 solution: {} [{}]", ans2, duration_format(duration2));
println!("Total duration: {}", duration_format(duration1 + duration2));
}
struct Reports {
@ -59,12 +54,21 @@ impl<T: BufRead> From<Lines<T>> for Reports {
impl Reports {
fn is_safe(report: &Vec<u64>) -> bool {
(report.iter().zip(report.iter().skip(1)).all(|(a, b)| a > b)
|| report.iter().zip(report.iter().skip(1)).all(|(a, b)| a < b))
&& report
.iter()
.zip(report.iter().skip(1))
.all(|(a, b)| a.abs_diff(*b) >= 1 && a.abs_diff(*b) <= 3)
let mut ascending: bool = true;
let mut descending: bool = true;
for (a, b) in report.iter().zip(report.iter().skip(1)) {
if a > b {
ascending = false
}
if a < b {
descending = false;
}
let ad = a.abs_diff(*b);
if !(ad >= 1 && ad <= 3) || (!ascending && !descending) {
return false;
};
}
return true;
}
fn count_safe(&self) -> u64 {
self.reports.iter().filter(|report| Self::is_safe(report)).count() as u64