Day 5, day 4 cleanup

day4/src/main.rs

@@ -53,13 +53,13 @@ fn main() {
 
 fn verify(passport: &HashMap<String, String>) -> u32 {
     lazy_static! {
-        static ref color_match: Regex = Regex::new("#[0-9a-f]{6}").unwrap();
+        static ref COLOR_MATCH: Regex = Regex::new("#[0-9a-f]{6}").unwrap();
     }
     lazy_static! {
-    static ref pid_match: Regex = Regex::new("[0-9]{9}").unwrap();
+    static ref PID_MATCH: Regex = Regex::new("[0-9]{9}").unwrap();
     }
     lazy_static! {
-    static ref eye_colors: HashSet<String> = {
+    static ref EYE_COLORS: HashSet<String> = {
         let mut s = HashSet::new();
         s.insert("amb".to_string());
         s.insert("blu".to_string());
@@ -80,14 +80,14 @@ fn verify(passport: &HashMap<String, String>) -> u32 {
         (2020..2031).contains(&(passport.get("eyr").unwrap().parse::<u32>().unwrap())) &&
         passport.contains_key("hgt") &&
         (passport.get("hgt").unwrap().ends_with("cm") &&
-            (150..194).contains(&passport.get("hgt").unwrap().trim_right_matches("cm").parse::<u32>().unwrap())
+            (150..194).contains(&passport.get("hgt").unwrap().trim_end_matches("cm").parse::<u32>().unwrap())
             ||
             passport.get("hgt").unwrap().ends_with("in") &&
-                (59..76).contains(&passport.get("hgt").unwrap().trim_right_matches("in").parse::<u32>().unwrap())
+                (59..76).contains(&passport.get("hgt").unwrap().trim_end_matches("in").parse::<u32>().unwrap())
         ) &&
-        passport.contains_key("ecl") && eye_colors.contains(passport.get("ecl").unwrap()) &&
+        passport.contains_key("ecl") && EYE_COLORS.contains(passport.get("ecl").unwrap()) &&
-        passport.contains_key("hcl") && color_match.is_match(passport.get("hcl").unwrap()) &&
+        passport.contains_key("hcl") && COLOR_MATCH.is_match(passport.get("hcl").unwrap()) &&
-        passport.contains_key("pid") && pid_match.is_match(passport.get("pid").unwrap()) {
+        passport.contains_key("pid") && PID_MATCH.is_match(passport.get("pid").unwrap()) {
         1
     } else {
         0

day5/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "day5"
+version = "0.1.0"
+authors = ["henine <matija@rezar.biz>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

day5/input

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day5/src/main.rs

@@ -0,0 +1,77 @@
+use std::fs::File;
+use std::io::{BufReader, BufRead};
+use std::result::Result::{Err, Ok};
+use std::cmp::{max, min};
+use std::collections::HashSet;
+
+
+fn main() {
+    let file = match File::open("input") {
+        Ok(file) => file,
+        Err(e) => panic!(e)
+    };
+
+    let input_buffer = BufReader::new(&file);
+
+    let mut row = 0;
+    let mut row_i = 6;
+    let mut column = 0;
+    let mut col_i = 2;
+
+    let mut max_id = 0;
+
+    let mut filled_seats = HashSet::new();
+    let mut minrow = 200;
+    let mut maxrow = -1;
+
+    for rline in input_buffer.lines() {
+        let line = match rline {
+            Ok(line) => line,
+            Err(e) => panic!(e)
+        };
+
+        for char in line.chars() {
+            match char {
+                'F' => {
+                    row_i -= 1;
+                }
+                'B' => {
+                    row += 1 << row_i;
+                    row_i -= 1;
+                }
+                'R' => {
+                    column += 1 << col_i;
+                    col_i -= 1;
+                }
+                'L' => {
+                    col_i -= 1;
+                }
+                _ => panic!()
+            }
+        }
+
+        let id = 8 * &row + &column;
+
+        max_id = max(id, max_id);
+        minrow = min(row, minrow);
+        maxrow = max(row, maxrow);
+
+        println!("{}: row {} column {} id {}", line, row, column, id);
+        filled_seats.insert((row, column));
+
+        row = 0;
+        row_i = 6;
+        column = 0;
+        col_i = 2;
+    }
+
+    for r in minrow..maxrow {
+        for c in 0..8 {
+            if !filled_seats.contains(&(r, c)) {
+                println!("My id: {}", 8 * r + c);
+            }
+        }
+    }
+
+    println!("Max id: {}", max_id);
+}

day5/test

@@ -0,0 +1,4 @@
+FBFBBFFRLR
+BFFFBBFRRR
+FFFBBBFRRR
+BBFFBBFRLL