Part 2 done
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1 changed files with 18 additions and 3 deletions
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@ -1,6 +1,7 @@
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mod common;
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use std::collections::HashSet;
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use std::iter::FromIterator;
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fn main() {
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let input = common::day_input(3);
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@ -33,11 +34,25 @@ fn part1(input: &str) -> i32 {
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n += 1
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}
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}
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return r;
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r
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}
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fn part2(input: &str) -> i32 {
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0
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let mut r = 0_i32;
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for t in input.lines().collect::<Vec<&str>>().chunks_exact(3) {
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let a: HashSet<u8> = HashSet::from_iter(t[0].bytes());
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let b: HashSet<u8> = HashSet::from_iter(t[1].bytes());
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let c: HashSet<u8> = HashSet::from_iter(t[2].bytes());
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let ab = HashSet::from_iter(a.intersection(&b).cloned());
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let b = ab.intersection(&c).next().unwrap();
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if *b >= 97 && *b <= 122 {
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r += (*b as i32) - 96;
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} else {
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r += (*b as i32) - 65 + 27;
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}
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println!("+{} = {}", b, r);
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}
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r
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}
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#[cfg(test)]
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@ -58,6 +73,6 @@ CrZsJsPPZsGzwwsLwLmpwMDw";
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#[test]
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fn test_part2() {
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assert_eq!(part2(TEST_INPUT), 0)
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assert_eq!(part2(TEST_INPUT), 70)
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}
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}
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