Решение на Домашно 1 - търсене на съкровища от Милан Стойчев
Резултати
- 20 точки от тестове
- 0 бонус точки
- 20 точки общо
- 5 успешни тест(а)
- 0 неуспешни тест(а)
Код
use std::sync::{
atomic::{AtomicBool, Ordering},
mpsc, Arc,
};
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct TreasureLoc {
pub lane_index: usize,
pub cell_coord: usize,
pub value: i32,
}
#[derive(Debug, PartialEq, Eq)]
pub enum FoundTreasures {
Big(TreasureLoc),
Small(Vec<TreasureLoc>),
Nothing,
}
pub struct Scan<'a> {
pub start_coord: usize,
pub cells: &'a [i32],
}
struct SharedState {
found: AtomicBool,
}
impl SharedState {
fn stop(&self) {
self.found.store(true, Ordering::SeqCst);
}
fn is_stopped(&self) -> bool {
self.found.load(Ordering::SeqCst)
}
}
pub struct Drone {
lane_index: usize,
shared: Arc<SharedState>,
sender: mpsc::Sender<TreasureLoc>,
}
impl Drone {
pub fn explore(&mut self, scanner: &mut dyn Iterator<Item = Scan<'_>>) {
for scan in scanner {
if self.shared.is_stopped() {
break;
}
for (i, &value) in scan.cells.iter().enumerate() {
if value > 0 {
let loc = TreasureLoc {
lane_index: self.lane_index,
cell_coord: scan.start_coord + i,
value,
};
let _ = self.sender.send(loc);
}
}
}
}
}
pub struct DroneController {
shared: Arc<SharedState>,
sender: Option<mpsc::Sender<TreasureLoc>>,
receiver: mpsc::Receiver<TreasureLoc>,
}
impl DroneController {
pub fn new() -> Self {
let (tx, rx) = mpsc::channel();
Self {
shared: Arc::new(SharedState {
found: AtomicBool::new(false),
}),
sender: Some(tx),
receiver: rx,
}
}
pub fn create_drone(&mut self, lane_index: usize) -> Drone {
Drone {
lane_index,
shared: Arc::clone(&self.shared),
sender: self.sender.as_ref().unwrap().clone(),
}
}
pub fn run(&mut self) -> FoundTreasures {
use std::collections::HashMap;
self.sender.take();
let mut per_lane: HashMap<usize, TreasureLoc> = HashMap::new();
let mut sum: i32 = 0;
while let Ok(loc) = self.receiver.recv() {
if loc.value >= 999 {
self.shared.stop();
return FoundTreasures::Big(loc);
}
match per_lane.get(&loc.lane_index) {
Some(existing) if existing.value >= loc.value => {
continue;
}
Some(existing) => {
sum -= existing.value;
}
None => {}
}
per_lane.insert(loc.lane_index, loc.clone());
sum += loc.value;
if sum >= 300 {
self.shared.stop();
return FoundTreasures::Small(
per_lane.values().cloned().collect(),
);
}
}
FoundTreasures::Nothing
}
}
const fn assert_send_static<T: Send + 'static>() {}
const _: () = assert_send_static::<Drone>();
const _: () = assert_send_static::<DroneController>();
Лог от изпълнението
Updating crates.io index
Locking 46 packages to latest compatible versions
Compiling proc-macro2 v1.0.104
Compiling unicode-ident v1.0.22
Compiling quote v1.0.42
Compiling libc v0.2.178
Compiling syn v2.0.111
Compiling futures-sink v0.3.31
Compiling pin-project-lite v0.2.16
Compiling futures-core v0.3.31
Compiling parking_lot_core v0.9.12
Compiling futures-channel v0.3.31
Compiling slab v0.4.11
Compiling futures-io v0.3.31
Compiling cfg-if v1.0.4
Compiling memchr v2.7.6
Compiling futures-task v0.3.31
Compiling scopeguard v1.2.0
Compiling pin-utils v0.1.0
Compiling smallvec v1.15.1
Compiling lock_api v0.4.14
Compiling errno v0.3.14
Compiling signal-hook-registry v1.4.8
Compiling parking_lot v0.12.5
Compiling mio v1.1.1
Compiling futures-macro v0.3.31
Compiling tokio-macros v2.6.0
Compiling socket2 v0.6.1
Compiling futures-util v0.3.31
Compiling bytes v1.11.0
Compiling tokio v1.48.0
Compiling futures-executor v0.3.31
Compiling futures v0.3.31
Compiling solution v0.1.0 (/tmp/d20251229-4108951-18c0i32/solution)
warning: function `assert_send_static` is never used
--> src/lib.rs:140:10
|
140 | const fn assert_send_static<T: Send + 'static>() {}
| ^^^^^^^^^^^^^^^^^^
|
= note: `#[warn(dead_code)]` on by default
warning: `solution` (lib) generated 1 warning
Finished `test` profile [unoptimized + debuginfo] target(s) in 18.80s
Running tests/solution_test.rs (target/debug/deps/solution_test-f512224d9fb3caf8)
running 5 tests
test solution_test::test_big_treasure ... ok
test solution_test::test_nothing ... ok
test solution_test::test_small_treasure ... ok
test solution_test::test_small_treasure_2 ... ok
test solution_test::test_return_immediately_when_found ... ok
test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.10s