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[root]
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name = "day04"
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@@ -0,0 +1,7 @@
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[package]
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name = "day04"
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version = "0.1.0"
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authors = ["~krowbar"]
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[dependencies]
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regex = "0.1"
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@@ -0,0 +1,74 @@
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extern crate regex;
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use std::io::Read;
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use std::fs::File;
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use regex::Regex;
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use std::collections::HashMap;
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///// THIS IS NOT WORKING RIGHT. :(
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// fn get_lines(input: &String) {
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// let lines: Vec<(&String, i32, &String)> = vec![];
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// lines.push(("Foo", 42, "bar"));
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// return lines;
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// }
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// fn part_1(input: &Vec<(String, i32, String)>) {
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// println!("Started part 1");
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// }
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#[derive(Debug)]
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struct Room {
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name: String,
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sector: i32,
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check: String,
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}
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fn part_1(input: &String) {
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let re = Regex::new(r"([a-z\\-]+)-([:digit:]+)\[([:lower:]+)\]").unwrap();
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let sum = 0;
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for cap in re.captures_iter(input) {
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let room = Room { name: String::from(cap.at(1).unwrap_or("")),
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sector: cap.at(2).unwrap_or("0").parse().unwrap_or(0),
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check: String::from(cap.at(3).unwrap_or("")),
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};
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let mut charMap: HashMap<char, i32> = HashMap::new();
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for ch in room.name.replace("-", "").chars() {
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let l = charMap.entry(ch).or_insert(0);
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*l += 1;
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}
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println!("{:?}", charMap);
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//println!("{:?}", room);
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//let mut letters: Vec<char> = .collect();
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//println!("{:?}", letters.sort());
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}
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println!("Part 1: Total sum of valid rooms is {}", sum);
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// let sum = input
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// .lines()
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// .map(|l|
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// re.captures(l).unwrap()
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// //.split(&re)
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// //.map(|&v| Room { name: v[0] + v[1] + v[2], sector: v[3].parse::<i32>().unwrap(), checksum: v[4] })
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// //.collect::<Vec<_>>()
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// //.turn into collection of items
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// //.collect
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// )
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// .map(|c| c.at(0))
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// .collect::<Vec<_>>()
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// // //.filter out decoy rooms
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// // //.collect
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// // //.fold and sum the sectors
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// // //.unwrap?
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// .len();
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// println!("Part 1: Sum was {}", sum);
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}
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fn main() {
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let mut file = File::open("./data").expect("could not open file");
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let mut input = String::new();
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file.read_to_string(&mut input).expect("could not read file");
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part_1(&input);
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}
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