day4 done, but code needs to be refactored

master
attila 4 years ago
parent 2eb8adf620
commit fa6bd59445

4
day4/Cargo.lock generated

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[[package]]
name = "day4"
version = "0.1.0"

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[package]
name = "day4"
version = "0.1.0"
authors = ["attila <daf276@gmx.de>"]
[dependencies]

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use std::fs;
use std::collections::HashMap;
fn main() {
let file = fs::read_to_string("input").expect("Unable to read file");
let mut lines: Vec<&str> = file.split("\n").collect();
lines.sort();
let mut times = HashMap::new();
let mut guards = HashMap::new();
let mut start = 0;
let mut end = 0;
let mut guard = 0;
for line in lines {
let r = line.split(|c| c == '-' || c == ' ' || c == ':' || c == ':' || c == ']').collect::<Vec<&str>>();
if r[7].contains("#") {
let number = r[7].split("#").collect::<Vec<&str>>();
guard = number[1].parse::<i32>().unwrap();
}
if r[7] == "asleep" {
start = r[4].parse::<i32>().unwrap();
}
if r[7] == "up" {
end = r[4].parse::<i32>().unwrap();
*times.entry(guard).or_insert(end - start) += end - start;
for i in start..end {
*guards.entry((guard, i)).or_insert(0) +=1;
}
}
}
//Part1
let max_time_asleep = *times.values().into_iter().max().unwrap();
let mut guard_who_slept_most = 0;
for (key, value) in times {
if value == max_time_asleep {
guard_who_slept_most = key;
}
}
let mut minute_most_asleep = 0;
let mut times_asleep_in_same_minute = 0;
for ((guard, minute), no_times_asleep_in_same_minute) in &guards{
if guard == &guard_who_slept_most && no_times_asleep_in_same_minute >= &times_asleep_in_same_minute{
times_asleep_in_same_minute = *no_times_asleep_in_same_minute;
minute_most_asleep = *minute;
}
}
//Part2
let mut max_no_times_asleep_in_same_minute = 0;
let mut final_minute= 0;
let mut test = 0;
for ((guard, minute), no_times_asleep_in_same_minute) in &guards{
if no_times_asleep_in_same_minute > &max_no_times_asleep_in_same_minute {
max_no_times_asleep_in_same_minute = *no_times_asleep_in_same_minute;
final_minute = *minute;
test = *guard;
}
}
println!("{}", minute_most_asleep as i32 *guard_who_slept_most);
println!("{}", test*final_minute);
}
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