Part 1 passing test
This commit is contained in:
parent
c461b0a958
commit
7568b54f38
|
@ -23,33 +23,6 @@ impl DirTree {
|
|||
pub fn root() -> Self {
|
||||
Self::new(None)
|
||||
}
|
||||
|
||||
pub fn size(&self) -> usize {
|
||||
self.files.values().sum::<usize>()
|
||||
+ self
|
||||
.subdirectories
|
||||
.values()
|
||||
.map(|v| v.borrow().size())
|
||||
.sum::<usize>()
|
||||
}
|
||||
}
|
||||
|
||||
struct DirTreeIterator {
|
||||
dir_tree: Rc<RefCell<DirTree>>,
|
||||
}
|
||||
|
||||
impl IntoIterator for DirTree {
|
||||
type Item = Rc<RefCell<DirTree>>;
|
||||
type IntoIter = std::iter::Chain<
|
||||
std::iter::Once<Rc<RefCell<DirTree>>>,
|
||||
std::collections::hash_map::Values<String, Rc<RefCell<DirTree>>>,
|
||||
>;
|
||||
|
||||
fn into_iter(&self) -> Self::IntoIter {
|
||||
std::iter::once(Rc::new(RefCell::new(*self)))
|
||||
.into_iter()
|
||||
.chain(self.subdirectories.values().into_iter())
|
||||
}
|
||||
}
|
||||
|
||||
type Input = Rc<RefCell<DirTree>>;
|
||||
|
@ -87,8 +60,28 @@ fn processed_input(input: &str) -> Input {
|
|||
return root;
|
||||
}
|
||||
|
||||
const PART1_LIMIT: usize = 100_000;
|
||||
|
||||
fn dfs1(input: Input, acc: usize) -> usize {
|
||||
let dt = input.borrow();
|
||||
|
||||
let subdir_sizes = dt.subdirectories.values().map(|sdt| dfs1(sdt.clone(), acc));
|
||||
let file_sizes = dt.files.values().map(|r| r.to_owned());
|
||||
|
||||
let this_dir_size = subdir_sizes.clone().chain(file_sizes).sum::<usize>();
|
||||
|
||||
let new_acc = acc + subdir_sizes.filter(|sd| *sd < PART1_LIMIT).sum::<usize>();
|
||||
if this_dir_size < PART1_LIMIT {
|
||||
return new_acc + this_dir_size;
|
||||
} else {
|
||||
return new_acc;
|
||||
}
|
||||
}
|
||||
|
||||
fn part1(input: &Input) -> Result {
|
||||
100
|
||||
let r = dfs1(input.clone(), 0);
|
||||
println!("{} /", r);
|
||||
r
|
||||
}
|
||||
|
||||
fn part2(input: &Input) -> Result {
|
||||
|
|
Loading…
Reference in a new issue