ringofstorms/advent_of_code
ringofstorms/advent_of_code
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This commit is contained in:
RingOfStorms (Joshua Bell) 2023-12-04 00:43:46 -06:00
parent 41604e606a
commit d470daf83d
1 changed files with 8 additions and 18 deletions
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26
src/bin/day3.rs
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@ -100,10 +100,8 @@ impl FromStr for Grid {
};
} else {
if char == '.' {
// println!("Ended number seq, hit dot after {:?} {}", num, char);
row.push(Item::None);
} else {
// println!("Ended number seq, hit symbol after {:?} {}", num, char);
row.push(Item::Symbol(char == '*'))
}
if let Some(value) = num {
@ -118,6 +116,11 @@ impl FromStr for Grid {
}
}
}
// This killed me, I forgot to add a check after the end of the line to see if I
// was still "scanning" for a number and adding it. There was 1 single number not
// getting parsed that was on the right edge of the grid and I could not figure it
// out for a while.
if let Some(value) = num {
grid.numbers.push(Number {
value,
@ -141,20 +144,10 @@ fn part1(input: String) -> Result<usize> {
let is_part_no = adjacent
.iter()
.any(|item| matches!(item, (Item::Symbol(_), _, _)));
// ```
// println!(
// "Checking number: {:?}, is part: {}\tadjacent: {:?}",
// number.value, is_part_no, adjacent
// );
// ```
if is_part_no {
// print!("{}, ", number.value);
sum += number.value;
}
}
// grid.print();
Ok(sum)
}
@ -177,17 +170,14 @@ fn part2(input: String) -> Result<usize> {
if gear_nums.len() >= 2 {
// this is lazy.. adds duplicates but w/e
let power = gear_nums.iter().fold(1, |pow, gear| pow * gear.value);
gear_nums.iter().for_each(|g| {
// println!("GEAR FOUND: {}/{}", g.value, power);
used.push((g.row_index, g.char_start))
});
gear_nums
.iter()
.for_each(|g| used.push((g.row_index, g.char_start)));
sum += power;
}
}
}
}
// grid.print();
Ok(sum)
}