thallada/advent-of-code-2018
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Try really sloppily adding hour * 60 to mins

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Tests still pass but real result is STILL the same. Think I give up on this one.
This commit is contained in:
Tyler Hallada 2018-12-18 00:05:45 -05:00
parent 3f74dcb73e
commit 34eaed357d
1 changed files with 18 additions and 8 deletions
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26
src/day4.rs
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@ -74,7 +74,7 @@ fn get_part1(filename: &str) -> Result<u32, Box<Error>> {
let minutes_asleep = minutes_asleep_per_guard(records);
let sleepiest_guard = minutes_asleep.iter().max_by_key(|&(_, mins)| mins.len()).unwrap();
let sleepiest_minute = mode(sleepiest_guard.1);
Ok(sleepiest_guard.0 * sleepiest_minute)
Ok(sleepiest_guard.0 * (sleepiest_minute % 60))
}
fn get_part2(filename: &str) -> Result<u32, Box<Error>> {
@ -90,7 +90,7 @@ fn get_part2(filename: &str) -> Result<u32, Box<Error>> {
.iter()
.max_by_key(|(_, mins)| mins.into_iter().filter(|min| **min == sleepiest_minute).count())
.unwrap();
Ok(sleepiest_guard.0 * sleepiest_minute)
Ok(sleepiest_guard.0 * (sleepiest_minute % 60))
}
fn mode(numbers: &[u32]) -> u32 {
@ -113,9 +113,19 @@ fn minutes_asleep_per_guard(mut records: Vec<Record>) -> HashMap<u32, Vec<u32>>
for record in records {
match record {
Record::Start { time: _, guard_id } => current_guard = guard_id,
Record::Sleep { time } => fell_asleep = time.minute(),
Record::Sleep { time } => {
let mut hour = 0;
if time.hour() == 0 {
hour = 60
}
fell_asleep = time.minute() + hour;
}
Record::Wake { time } => {
let mut slept_minutes = (fell_asleep..time.minute()).collect();
let mut hour = 0;
if time.hour() == 0 {
hour = 60
}
let mut slept_minutes = (fell_asleep..(time.minute() + hour)).collect();
match minutes_asleep.entry(current_guard) {
Entry::Vacant(e) => { e.insert(slept_minutes); },
Entry::Occupied(mut e) => { e.get_mut().append(&mut slept_minutes); },
@ -281,20 +291,20 @@ mod tests {
#[test]
fn gets_minutes_asleep_per_guard() {
let mut expected: HashMap<u32, Vec<u32>> = HashMap::new();
expected.insert(10, vec![5, 6, 7, 8, 9]);
expected.insert(10, vec![59, 60, 61, 62, 63, 64]);
assert_eq!(minutes_asleep_per_guard(vec![
Record::Sleep {
time: NaiveDateTime::parse_from_str(
"1518-11-01 00:05", "%Y-%m-%d %H:%M").unwrap(),
"1518-11-01 23:59", "%Y-%m-%d %H:%M").unwrap(),
},
Record::Start {
time: NaiveDateTime::parse_from_str(
"1518-11-01 00:00", "%Y-%m-%d %H:%M").unwrap(),
"1518-11-01 23:00", "%Y-%m-%d %H:%M").unwrap(),
guard_id: 10,
},
Record::Wake {
time: NaiveDateTime::parse_from_str(
"1518-11-01 00:10", "%Y-%m-%d %H:%M").unwrap(),
"1518-11-02 00:05", "%Y-%m-%d %H:%M").unwrap(),
},
]), expected);
}