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Bert Peters
2023-12-02 14:11:18 +01:00
parent 5517662ae2
commit 4ee6a82056
1 changed files with 8 additions and 10 deletions
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18
2023/src/day01.rs
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@@ -39,17 +39,15 @@ pub fn part2(input: &[u8]) -> Result<String> {
let mut sum = 0;
for line in input.split(|&c| c == b'\n') {
let mut first = None;
let mut last = 0;
let mut it = parser.find_overlapping_iter(line);
if let Some(first) = it.next() {
let first = convert_id(first.pattern().as_u32())?;
let last = if let Some(last) = it.last() {
convert_id(last.pattern().as_u32())?
} else {
first
};
// Cannot use find_iter because it doesn't find overlapping matches.
for needle in parser.find_overlapping_iter(line) {
let digit = convert_id(needle.pattern().as_u32())?;
first.get_or_insert(digit);
last = digit;
}
if let Some(first) = first {
sum += 10 * first + last;
}
}