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Bugfix for 2023 day 03: Handle number in very last position correctly

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This commit is contained in:
Burnus 2023-12-03 22:37:53 +01:00
parent e0f463a14a
commit 7f5d8635cc
2 changed files with 10 additions and 5 deletions
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9
2023/day03_gear_ratios/src/lib.rs
View file

@ -16,7 +16,7 @@ fn find_part_numbers(input: &str) -> (Vec<usize>, Vec<usize>) {
} }
} }
let mut cur_num = 0; let mut cur_num = 0;
for (line_idx, line) in input.lines().enumerate() { for (line_idx, line) in input.lines().chain("\n".lines()).enumerate() {
if cur_num > 0 { if cur_num > 0 {
let digits = (1_u32..).find(|d| 10_usize.pow(*d) > cur_num).unwrap() as usize; let digits = (1_u32..).find(|d| 10_usize.pow(*d) > cur_num).unwrap() as usize;
let mut is_part = false; let mut is_part = false;
@ -89,10 +89,15 @@ mod tests {
read_to_string(name).expect(&format!("Unable to read file: {name}")[..]).trim().to_string() read_to_string(name).expect(&format!("Unable to read file: {name}")[..]).trim().to_string()
} }
#[test]
fn empty_str() {
assert_eq!(run(""), (0, 0))
}
#[test] #[test]
fn test_sample() { fn test_sample() {
let sample_input = read_file("tests/sample_input"); let sample_input = read_file("tests/sample_input");
assert_eq!(run(&sample_input), (4361, 467835)); assert_eq!(run(&sample_input), (4364, 467835));
} }
#[test] #[test]

6
2023/day03_gear_ratios/tests/sample_input
View file

@ -5,6 +5,6 @@
617*...... 617*......
.....+.58. .....+.58.
..592..... ..592.....
......755. ......755.1
...$.*.... ...$.*...*
.664.598.. .664.598.2