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day10 part2

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This commit is contained in:
Andrew Glaze 2023-12-13 12:18:18 -05:00
parent 4984ad4801
commit 9fb5de6cac
1 changed files with 20 additions and 16 deletions
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36
day10/src/main.rs
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@ -20,29 +20,33 @@ fn main() {
} }
let mut finished = false; let mut finished = false;
let mut count = 1;
let mut first_pre = start_dirs[0].reverse(); let mut pre = start_dirs[0].reverse();
let mut second_pre = start_dirs[1].reverse(); let mut pos = ((start.0 as i32 + start_dirs[0].to_ind().1) as usize, (start.1 as i32 + start_dirs[0].to_ind().0) as usize);
let mut first_pos = ((start.0 as i32 + start_dirs[0].to_ind().1) as usize, (start.1 as i32 + start_dirs[0].to_ind().0) as usize);
let mut second_pos = ((start.0 as i32 + start_dirs[1].to_ind().1) as usize, (start.1 as i32 + start_dirs[1].to_ind().0) as usize); let mut the_loop = vec![start, pos];
let mut area = 0;
while !finished { while !finished {
let first_next = &input[first_pos.0][first_pos.1].iter().filter(|x| x != &&first_pre).next().unwrap(); let first_next = &input[pos.0][pos.1].iter().filter(|x| x != &&pre).next().unwrap();
first_pos = ((first_pos.0 as i32 + first_next.to_ind().1) as usize, (first_pos.1 as i32 + first_next.to_ind().0) as usize); pos = ((pos.0 as i32 + first_next.to_ind().1) as usize, (pos.1 as i32 + first_next.to_ind().0) as usize);
first_pre = first_next.reverse(); pre = first_next.reverse();
let second_next = &input[second_pos.0][second_pos.1].iter().filter(|x| x != &&second_pre).next().unwrap();
second_pos = ((second_pos.0 as i32 + second_next.to_ind().1) as usize, (second_pos.1 as i32 + second_next.to_ind().0) as usize);
second_pre = second_next.reverse();
count += 1;
finished = first_pos == second_pos;
finished = pos == start;
the_loop.push(pos);
} }
println!("{:?}", count) for win in the_loop.windows(2) {
area += (win[0].1 * win[1].0) as i64;
area -= (win[0].0 * win[1].1) as i64;
}
let area = i64::abs(area) / 2;
let spaces = area - (the_loop.len() as i64 / 2) + 1;
println!("{}", spaces)
} }
fn parse_input(input: &String) -> Vec<Vec<Vec<Direction>>> { fn parse_input(input: &String) -> Vec<Vec<Vec<Direction>>> {