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This commit is contained in:
nora 2023-12-04 19:49:27 +01:00
parent 2c1c4ff478
commit 672f2a3674
1 changed files with 25 additions and 4 deletions
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29
2023/day04/src/lib.rs
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@ -26,8 +26,29 @@ impl Day for Day04 {
}
}
fn part1(_input: &str) -> u64 {
0
fn part1(input: &str) -> u64 {
input
.lines()
.map(|line| {
let mut numbers = line.split(':').nth(1).unwrap().split("|");
let winning = numbers
.next()
.unwrap()
.split_whitespace()
.collect::<Vec<_>>();
let you_have = numbers.next().unwrap().split_whitespace();
let win_amount = you_have
.filter(|have| winning.iter().any(|w| w == have))
.count();
if win_amount > 0 {
1 << (win_amount - 1)
} else {
0
}
})
.sum()
}
fn part2(_input: &str) -> u64 {
@ -37,8 +58,8 @@ fn part2(_input: &str) -> u64 {
helper::tests! {
day04 Day04;
part1 {
small => 0;
default => 0;
small => 13;
default => 24733;
}
part2 {
small => 0;