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day_8: first try with ifs not working

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Daniel Heras Quesada
2024-12-10 20:37:39 +01:00
parent afa053e21e
commit 074f4ea870
6 changed files with 288 additions and 5 deletions
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232
src/advent_of_code/sun_08.rs Normal file
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use std::collections::HashSet;
use utils::read_antena_map_input;
use super::*;
pub fn resonant_collinearity(input: &str) -> AntinodeCount {
let (roof_map, antena_list) = read_antena_map_input(input);
get_antinode_set_of_aligned_position(&antena_list, &roof_map).len()
}
pub fn get_antinode_set_of_aligned_position(
antena_list: &AntenaList,
map: &RoofMap,
) -> AntinodeList {
let mut antinode_list: AntinodeList = HashSet::new();
for antena in antena_list {
for complementary_antena in antena_list {
if antena != complementary_antena {
let distance_x = (antena.1 as i32 - complementary_antena.1 as i32).abs() as usize;
let distance_y = (antena.0 as i32 - complementary_antena.0 as i32).abs() as usize;
println!(
"For antenas: {:?} and {:?} the distances are x: {}, y: {}",
antena, complementary_antena, distance_x, distance_y
);
let (a, b) = get_extremes_with_variance(
(antena.0, antena.1),
(complementary_antena.0, complementary_antena.1),
distance_y,
distance_x,
map.len(),
map[0].len(),
);
if let Some(pair) = a {
antinode_list.insert(pair);
}
if let Some(pair) = b {
antinode_list.insert(pair);
}
}
}
}
println!("Aninode list: {:?}", antinode_list);
antinode_list
}
// FIXME: too many if / else, this is easier treating it as a real vector
pub fn get_extremes_with_variance(
a: (usize, usize),
b: (usize, usize),
variance_y: usize,
variance_x: usize,
max_y: usize,
max_x: usize,
) -> (Option<(usize, usize)>, Option<(usize, usize)>) {
if a.1 > b.1 {
if a.0 > b.0 {
// |b_|
// |_a|
let first =
if b.0 as i32 - variance_y as i32 >= 0 && b.1 as i32 - variance_x as i32 >= 0 {
Some((b.0 - variance_y, b.1 - variance_x))
} else {
None
};
let second = if a.0 + variance_y < max_y && a.1 + variance_x < max_x {
Some((a.0 + variance_y, a.1 + variance_x))
} else {
None
};
(first, second)
} else {
// |_a|
// |b_|
let first = if a.0 as i32 - variance_y as i32 >= 0 && a.1 + variance_x < max_x {
Some((a.0 - variance_y, a.1 + variance_x))
} else {
None
};
let second = if b.0 + variance_y < max_y && b.1 as i32 - variance_x as i32 >= 0 {
Some((b.0 + variance_y, b.1 - variance_x))
} else {
None
};
(first, second)
}
} else {
if a.0 > b.0 {
// |_b|
// |a_|
let first = if b.0 as i32 - variance_y as i32 >= 0 && b.1 + variance_x < max_x {
Some((b.0 - variance_y, b.1 + variance_x))
} else {
None
};
let second = if a.0 + variance_y < max_y && a.1 as i32 - variance_x as i32 >= 0 {
Some((a.0 + variance_y, a.1 - variance_x))
} else {
None
};
(first, second)
} else {
// |a_|
// |_b|
let first =
if a.0 as i32 - variance_y as i32 >= 0 && a.1 as i32 - variance_x as i32 >= 0 {
Some((a.0 - variance_y, a.1 - variance_x))
} else {
None
};
let second = if b.0 + variance_y < max_y && b.1 + variance_x < max_x {
Some((b.0 + variance_y, b.1 + variance_x))
} else {
None
};
(first, second)
}
}
}
// NOTE: this might be the ugliest piece of code ever
// pub fn get_antinode_set_of_position(
// x: usize,
// y: usize,
// freq: &char,
// map: &RoofMap,
// ) -> AntinodeList {
// println!("Checking {},{}", y, x);
// let mut antinode_list: AntinodeList = HashSet::new();
// let mut scroll_count: i32 = 1;
// 'all_directions_check: loop {
// let new_pos_x = x as i32 + scroll_count;
// let new_pos_y = y as i32 + scroll_count;
// let new_neg_x = x as i32 - scroll_count;
// let new_neg_y = y as i32 - scroll_count;
// if new_pos_x >= map[0].len() as i32
// && new_pos_y >= map.len() as i32
// && new_neg_x < 0
// && new_neg_y < 0
// {
// break 'all_directions_check;
// }
// // bottom right
// if new_pos_x < map[0].len() as i32 && new_pos_y < map.len() as i32 {
// if let Some(map_freq) = map[new_pos_y as usize][new_pos_x as usize] {
// println!("Map_freq: {}", map_freq);
// if map_freq == *freq {
// let distance_between_antenas = (x as i32 - new_pos_x).abs();
// let antinode_x = new_pos_x + distance_between_antenas;
// let antinode_y = new_pos_y + distance_between_antenas;
// if antinode_x < map[0].len() as i32 && antinode_y < map.len() as i32 {
// if let None = map[antinode_y as usize][antinode_x as usize] {
// antinode_list.insert((antinode_y as usize, antinode_x as usize));
// }
// }
// }
// }
// }
// if new_pos_x < map[0].len() as i32 && new_neg_y >= 0 {
// if let Some(map_freq) = map[new_neg_y as usize][new_pos_x as usize] {
// println!("Map_freq: {}", map_freq);
// if map_freq == *freq {
// let distance_between_antenas = (x as i32 - new_pos_x).abs();
// let antinode_x = new_pos_x + distance_between_antenas;
// let antinode_y = new_neg_y - distance_between_antenas;
// if antinode_x < map[0].len() as i32 && antinode_y > 0 {
// if let None = map[antinode_y as usize][antinode_x as usize] {
// antinode_list.insert((antinode_y as usize, antinode_x as usize));
// }
// }
// }
// }
// }
// if new_neg_x >= 0 && new_neg_y >= 0 {
// if let Some(map_freq) = map[new_neg_y as usize][new_neg_x as usize] {
// println!("Map_freq: {}", map_freq);
// if map_freq == *freq {
// let distance_between_antenas = (x as i32 - new_neg_x).abs();
// let antinode_x = new_neg_x - distance_between_antenas;
// let antinode_y = new_neg_y - distance_between_antenas;
// if antinode_x >= 0 && antinode_y >= 0 {
// if let None = map[antinode_y as usize][antinode_x as usize] {
// antinode_list.insert((antinode_y as usize, antinode_x as usize));
// }
// }
// }
// }
// }
// if new_neg_x >= 0 && new_pos_y < map.len() as i32 {
// if let Some(map_freq) = map[new_pos_y as usize][new_neg_x as usize] {
// println!("Map_freq: {}", map_freq);
// if map_freq == *freq {
// let distance_between_antenas = (x as i32 - new_neg_x).abs();
// let antinode_x = new_neg_x - distance_between_antenas;
// let antinode_y = new_pos_y + distance_between_antenas;
// if antinode_x >= 0 && antinode_y < map.len() as i32 {
// if let None = map[antinode_y as usize][antinode_x as usize] {
// antinode_list.insert((antinode_y as usize, antinode_x as usize));
// }
// }
// }
// }
// }
// scroll_count += 1;
// }
// println!("Antinode_list: {:?}", antinode_list);
// antinode_list
// }