36 lines
1.0 KiB
Rust
36 lines
1.0 KiB
Rust
use std::fs;
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fn main() {
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let contents = fs::read_to_string("input").unwrap();
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let mut count1 = 0;
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let mut count2 = 0;
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for line in contents.lines() {
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let v: Vec<_> = line.split(':').collect();
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let rule = v[0].split(' ').collect::<Vec<_>>();
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let numbers = rule[0].split('-').collect::<Vec<_>>();
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let (start, end) = (
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numbers[0].parse::<usize>().unwrap(),
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numbers[1].parse::<usize>().unwrap(),
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);
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let c = rule[1];
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let password = &v[1][1..];
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// Part 1
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let char_count = password.matches(c).count();
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if start <= char_count && char_count <= end {
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count1 += 1;
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}
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// Part 2
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let (start, end) = (start - 1, end - 1);
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if password[start..start + 1] == *c {
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if password[end..end + 1] != *c {
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count2 += 1;
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}
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} else {
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if password[end..end + 1] == *c {
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count2 += 1;
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}
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}
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}
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println!("{} {}", count1, count2);
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}
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