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Make Halo a part of the Part structure

This commit is contained in:
Savanni D'Gerinel 2023-12-03 13:08:38 -05:00
parent 659a9ce482
commit 234f53b8b5
1 changed files with 49 additions and 58 deletions
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107
2023/src/day3.rs
View File

@ -39,6 +39,32 @@ impl Part {
})
.collect()
}
fn halo(&self, max_row: usize, max_col: usize) -> Vec<Addr> {
let mut halo: Vec<(i32, i32)> = vec![];
for r in self.start..self.end + 1 {
halo.push((self.row as i32 - 1, r as i32));
halo.push((self.row as i32 + 1, r as i32));
}
halo.push((self.row as i32 - 1, self.start as i32 - 1));
halo.push((self.row as i32, self.start as i32 - 1));
halo.push((self.row as i32 + 1, self.start as i32 - 1));
halo.push((self.row as i32 - 1, self.end as i32 + 1));
halo.push((self.row as i32, self.end as i32 + 1));
halo.push((self.row as i32 + 1, self.end as i32 + 1));
halo.into_iter()
.filter(|(row, col)| {
*row >= 0 && *row <= max_row as i32 && *col >= 0 && *col <= max_col as i32
})
.map(|(row, col)| Addr {
row: row as usize,
col: col as usize,
})
.collect()
}
}
#[derive(Clone, Debug, PartialEq)]
@ -79,16 +105,13 @@ fn find_gears(schematic: String) -> Vec<Gear> {
let splats = find_splats(sc)
.into_iter()
.map(|addr| {
halo(
Part {
value: 0,
row: addr.row,
start: addr.col,
end: addr.col,
},
max_row - 1,
max_col - 1,
)
Part {
value: 0,
row: addr.row,
start: addr.col,
end: addr.col,
}
.halo(max_row - 1, max_col - 1)
})
.collect::<Vec<Vec<Addr>>>();
@ -115,7 +138,7 @@ fn part_within_halo(halo1: Vec<Addr>, part: Part) -> bool {
}
fn is_part(schematic: &Vec<String>, part: Part) -> bool {
halo(part.clone(), schematic.len() - 1, schematic[0].len() - 1)
part.halo(schematic.len() - 1, schematic[0].len() - 1)
.into_iter()
.any(|addr| {
let cell = schematic[addr.row].chars().nth(addr.col).unwrap();
@ -123,32 +146,6 @@ fn is_part(schematic: &Vec<String>, part: Part) -> bool {
})
}
fn halo(addr: Part, max_row: usize, max_col: usize) -> Vec<Addr> {
let mut halo: Vec<(i32, i32)> = vec![];
for r in addr.start..addr.end + 1 {
halo.push((addr.row as i32 - 1, r as i32));
halo.push((addr.row as i32 + 1, r as i32));
}
halo.push((addr.row as i32 - 1, addr.start as i32 - 1));
halo.push((addr.row as i32, addr.start as i32 - 1));
halo.push((addr.row as i32 + 1, addr.start as i32 - 1));
halo.push((addr.row as i32 - 1, addr.end as i32 + 1));
halo.push((addr.row as i32, addr.end as i32 + 1));
halo.push((addr.row as i32 + 1, addr.end as i32 + 1));
halo.into_iter()
.filter(|(row, col)| {
*row >= 0 && *row <= max_row as i32 && *col >= 0 && *col <= max_col as i32
})
.map(|(row, col)| Addr {
row: row as usize,
col: col as usize,
})
.collect()
}
fn find_numbers(schematic: String) -> Vec<Part> {
let mut result = vec![];
for (idx, line) in schematic.lines().enumerate() {
@ -355,7 +352,7 @@ mod test {
end: 2,
};
assert_eq!(
halo(part, schematic.len() - 1, schematic[0].len() - 1),
part.halo(schematic.len() - 1, schematic[0].len() - 1),
vec![
Addr { row: 1, col: 0 },
Addr { row: 1, col: 1 },
@ -366,16 +363,13 @@ mod test {
);
assert_eq!(
halo(
Part {
value: 0,
row: 1,
start: 1,
end: 1
},
schematic.len() - 1,
schematic[0].len() - 1
),
Part {
value: 0,
row: 1,
start: 1,
end: 1
}
.halo(schematic.len() - 1, schematic[0].len() - 1),
vec![
Addr { row: 0, col: 1 },
Addr { row: 2, col: 1 },
@ -388,16 +382,13 @@ mod test {
]
);
assert_eq!(
halo(
Part {
value: 0,
row: 6,
start: 2,
end: 4,
},
schematic.len() - 1,
schematic[0].len() - 1
),
Part {
value: 0,
row: 6,
start: 2,
end: 4,
}
.halo(schematic.len() - 1, schematic[0].len() - 1),
vec![
Addr { row: 5, col: 2 },
Addr { row: 7, col: 2 },