diff options
Diffstat (limited to 'day10/src')
| -rw-r--r-- | day10/src/lib.rs | 191 |
1 files changed, 0 insertions, 191 deletions
diff --git a/day10/src/lib.rs b/day10/src/lib.rs deleted file mode 100644 index 6cf54ad..0000000 --- a/day10/src/lib.rs +++ /dev/null @@ -1,191 +0,0 @@ -use std::collections::VecDeque; -use std::str::FromStr; - -pub struct SyntaxLines { - lines: Vec<String>, -} - -impl FromStr for SyntaxLines { - type Err = (); - - fn from_str(input: &str) -> Result<Self, Self::Err> { - let lines: Vec<_> = input - .trim() - .split('\n') - .map(|x| x.to_owned()) - .collect::<Vec<String>>(); - - Ok(SyntaxLines { lines }) - } -} - -impl SyntaxLines { - pub fn part1(&self) -> u32 { - let mut result: u32 = 0; - - for line in &self.lines { - let mut qopen = VecDeque::new(); - let mut panic_char = ' '; - - for character in line.chars() { - match character { - c if character == '(' - || character == '[' - || character == '{' - || character == '<' => - { - qopen.push_back(c); - } - c if character == ')' - || character == ']' - || character == '}' - || character == '>' => - { - match qopen.pop_back() { - Some(bracket) => { - let mut error = false; - if c == ')' && bracket != '(' { - error = true; - } else if c == ']' && bracket != '[' { - error = true; - } else if c == '}' && bracket != '{' { - error = true; - } else if c == '>' && bracket != '<' { - error = true; - } - - if error { - panic_char = c; - } - } - None => panic!("Wtf?"), - }; - } - _ => {} - }; - - if panic_char != ' ' { - if panic_char == ')' { - result += 3; - } else if panic_char == ']' { - result += 57; - } else if panic_char == '}' { - result += 1197; - } else if panic_char == '>' { - result += 25137; - } - break; - } - } - } - - result - } - - pub fn part2(&self) -> u64 { - let mut scores = Vec::<u64>::new(); - - for line in &self.lines { - let mut qopen = VecDeque::new(); - let mut panic_char = ' '; - let mut result: u64 = 0; - - for character in line.chars() { - match character { - c if character == '(' - || character == '[' - || character == '{' - || character == '<' => - { - qopen.push_back(c); - } - c if character == ')' - || character == ']' - || character == '}' - || character == '>' => - { - match qopen.pop_back() { - Some(bracket) => { - let mut error = false; - if c == ')' && bracket != '(' { - error = true; - } else if c == ']' && bracket != '[' { - error = true; - } else if c == '}' && bracket != '{' { - error = true; - } else if c == '>' && bracket != '<' { - error = true; - } - - if error { - panic_char = c; - } - } - None => panic!("Wtf?"), - }; - } - _ => {} - }; - - if panic_char != ' ' { - break; - } - } - - if panic_char == ' ' { - while !qopen.is_empty() { - let v = qopen.pop_back().unwrap(); - result *= 5; - result += if v == '(' { - 1 - } else if v == '[' { - 2 - } else if v == '{' { - 3 - } else { - 4 - }; - } - scores.push(result); - } - } - - let middle = scores.len() / 2 as usize; - scores.sort(); - - scores[middle] - } -} - -#[cfg(test)] -mod tests { - use super::*; - - #[test] - fn test_example() { - let input: SyntaxLines = include_str!("../example.txt").parse().unwrap(); - let result = input.part1(); - assert_eq!(result, 26397); - } - - #[test] - fn test_example_part2() { - let input: SyntaxLines = include_str!("../example.txt").parse().unwrap(); - let result = input.part2(); - assert_eq!(result, 288957); - } - - #[test] - fn test_puzzle_input() { - let input: SyntaxLines = include_str!("../input.txt").parse().unwrap(); - let result = input.part1(); - assert_eq!(result, 392367); - } - - #[test] - fn test_puzzle_input_part2() { - let input: SyntaxLines = include_str!("../input.txt").parse().unwrap(); - let result = input.part2(); - assert_eq!(result, 2192104158); - } -} |