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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() br.lines()
} }
fn duration_format(duration: &Duration) -> String { fn duration_format(duration: Duration) -> String {
match duration.as_secs_f64() { match duration.as_secs_f64() {
x if x > 1.0 => format!("{:.3}s", x), x if x > 1.0 => format!("{:.3}s", x),
x if x > 0.010 => format!("{:.3}ms", x * 1e3), x if x > 0.010 => format!("{:.3}ms", x * 1e3),
@ -20,23 +20,18 @@ fn duration_format(duration: &Duration) -> String {
} }
fn main() { fn main() {
let input = get_input();
let start = Instant::now(); let start = Instant::now();
let ans1 = problem1(get_input()); let ans1 = problem1(input);
let duration = start.elapsed(); let duration1 = start.elapsed();
println!( println!("Problem 1 solution: {} [{}]", ans1, duration_format(duration1));
"Problem 1 solution: {} [{}]",
ans1,
duration_format(&duration)
);
let input = get_input();
let start = Instant::now(); let start = Instant::now();
let ans2 = problem2(get_input()); let ans2 = problem2(input);
let duration = start.elapsed(); let duration2 = start.elapsed();
println!( println!("Problem 2 solution: {} [{}]", ans2, duration_format(duration2));
"Problem 2 solution: {} [{}]", println!("Total duration: {}", duration_format(duration1 + duration2));
ans2,
duration_format(&duration)
);
} }
struct Reports { struct Reports {
@ -59,12 +54,21 @@ impl<T: BufRead> From<Lines<T>> for Reports {
impl Reports { impl Reports {
fn is_safe(report: &Vec<u64>) -> bool { fn is_safe(report: &Vec<u64>) -> bool {
(report.iter().zip(report.iter().skip(1)).all(|(a, b)| a > b) let mut ascending: bool = true;
|| report.iter().zip(report.iter().skip(1)).all(|(a, b)| a < b)) let mut descending: bool = true;
&& report for (a, b) in report.iter().zip(report.iter().skip(1)) {
.iter() if a > b {
.zip(report.iter().skip(1)) ascending = false
.all(|(a, b)| a.abs_diff(*b) >= 1 && a.abs_diff(*b) <= 3) }
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 { fn count_safe(&self) -> u64 {
self.reports.iter().filter(|report| Self::is_safe(report)).count() as u64 self.reports.iter().filter(|report| Self::is_safe(report)).count() as u64