47 lines
927 B
Rust
47 lines
927 B
Rust
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use crate::prelude::*;
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pub fn solution() -> Solution {
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Solution::new(Day::new(6, 2020), part_1, part_2).with_expected(6437, 3229)
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}
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fn part_1(input: &str) -> Result<String> {
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Ok(
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input
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.split("\n\n")
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.map(|group| {
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group
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.replace('\n', "")
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.chars()
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.collect::<HashSet<char>>()
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.len()
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})
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.sum::<usize>()
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.to_string(),
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)
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}
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fn part_2(input: &str) -> Result<String> {
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Ok(
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input
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.split("\n\n")
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.map(|group| {
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let mut count = 0;
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let possibilities =
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group.replace('\n', "").chars().collect::<HashSet<char>>();
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for character in possibilities {
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if group
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.trim()
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.split('\n')
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.all(|person| person.contains(character))
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{
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count += 1;
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}
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}
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count
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})
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.sum::<usize>()
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.to_string(),
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)
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}
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