moved code around so each year is a package.

2015/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name="aoc2015"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+core = { path = "../core" }
+md-5 = { workspace = true }

2015/src/bin/2015_01a.rs

@@ -22,7 +22,7 @@
 // To what floor do the instructions take Santa?
 //
 
-use aoc::read_data;
+use core::read_data;
 
 fn main() {
     let instructions = read_data("2015_01_data.txt");

2015/src/bin/2015_01b.rs

@@ -7,8 +7,7 @@
 // What is the position of the character that causes Santa to first enter the basement?
 //
 
-use aoc::read_data;
-
+use core::read_data;
 fn main() {
     let instructions = read_data("2015_01_data.txt");
 

2015/src/bin/2015_02a.rs

@@ -17,7 +17,7 @@
 // they order?
 //
 
-use aoc::{read_data, smallest_of_vec, string_to_3u32, sum_of_vec};
+use core::{read_data, smallest_of_vec, string_to_3u32, sum_of_vec};
 
 fn calculate_wrapping_needed(length: u32, width: u32, height: u32) -> u32 {
     let sides = vec![

2015/src/bin/2015_02b.rs

@@ -15,7 +15,7 @@
 // How many total feet of ribbon should they order?
 //
 
-use aoc::{read_data, string_to_3u32};
+use core::{read_data, string_to_3u32};
 
 fn bow_ribbon_length(l: u32, w: u32, h: u32) -> u32 {
     l * w * h
@@ -35,7 +35,8 @@ fn main() {
     println!("Box sized {} requires {}", "2x3x4", ribbon_for_package(2,3,4));
     println!("Box sized {} requires {}", "1x1x10", ribbon_for_package(1,1,10));
 
-    let sizes = read_data("2015_02_data.txt").lines();
+    let binding = read_data("2015_02_data.txt");
+    let sizes = binding.lines();
     let mut total_ribbon = 0;
 
     for size in sizes {

2015/src/bin/2015_03a.rs

@@ -17,7 +17,7 @@
 // ^v^v^v^v^v delivers a bunch of presents to some very lucky children at only 2 houses.
 
 use std::collections::HashMap;
-use aoc::read_data;
+use core::read_data;
 
 fn main() {
     let mut visits: HashMap<String, u32> = HashMap::from([("0x0".to_string(), 1)]);
@@ -27,19 +27,19 @@ fn main() {
     for  current_instruction in instructions.chars() {
         match current_instruction {
             '^' => {
-                println!("Move North 1");
+                //println!("Move North 1");
                 current_y += 1;
             },
             'v' => {
-                println!("Move South 1");
+                //println!("Move South 1");
                 current_y -= 1;
             },
             '<' => {
-                println!("Move West 1");
+                //println!("Move West 1");
                 current_x -= 1;
             },
             '>' => {
-                println!("Move East 1");
+                //println!("Move East 1");
                 current_x += 1;
             },
             _ => { unreachable!("Invalid instruction -> {}", &current_instruction); }
@@ -49,7 +49,5 @@ fn main() {
     }
 
     println!("Found {} houses got presents.", visits.keys().count());
-
-    println!("Taxation is theft.");
 }
 // 2081

2015/src/bin/2015_03b.rs

@@ -15,7 +15,7 @@
 // going the other.
 
 use std::collections::HashMap;
-use aoc::read_data;
+use core::read_data;
 
 fn num_houses(directions: &str) -> u32 {
     let (mut santa_x, mut santa_y, mut robo_x, mut robo_y) = (0,0,0,0);
@@ -59,7 +59,7 @@ fn num_houses(directions: &str) -> u32 {
         } else {
             format!("{}x{}", robo_x, robo_y)
         };
-        println!("V:{} S:{}x{} R:{}x{} V#:{}", current_address, santa_x, santa_y, robo_x, robo_y, visits.keys().count());
+        //println!("V:{} S:{}x{} R:{}x{} V#:{}", current_address, santa_x, santa_y, robo_x, robo_y, visits.keys().count());
         *visits.entry(current_address).and_modify(|x| *x += 1).or_insert(1);
         santas_turn = !santas_turn;
     }

2015/src/bin/2015_04a.rs

@@ -42,3 +42,4 @@ fn main() {
         }
     }
 }
+// 254575

2015/src/bin/2015_04b.rs

@@ -30,3 +30,4 @@ fn main() {
         }
     }
 }
+// 1048970

2015/src/bin/2015_05a.rs

@@ -19,7 +19,7 @@
 // How many strings are nice?
 //
 
-use aoc::read_data;
+use core::read_data;
 
 fn no_banned_parts(to_check: &str) -> bool {
     !to_check.contains("ab") &&

2015/src/bin/2015_05b.rs

@@ -20,32 +20,30 @@
 // ieodomkazucvgmuy is naughty because it has a repeating letter with one between (odo), but no
 // pair that appears twice.
 
-fn appears_twice_without_overlapping(to_check: &str) -> bool {
-    let mut to_find = vec![];
-    for index in 0..=to_check.len() - 1 {
-        let next_pair = to_check.chars().enumerate();
-        println!("Index {index} = {:?}", next_pair);
-    }
+use core::read_data;
 
-    true
+
+fn appears_twice_without_overlapping(to_check: &str) -> bool {
+    let check_chars: Vec<_> = to_check.chars().collect();
+    for index in 0.. check_chars.len() - 1 {
+        let pair = (check_chars[index], check_chars[index + 1]);
+        for subindex in index + 2 .. check_chars.len() - 1 {
+            if check_chars[subindex] == pair.0 && check_chars[subindex + 1] == pair.1 {
+                return true;
+            }
+        }
+    }
+    false
 }
 
 fn letter_repeated_seperated_by_1(to_check: &str) -> bool {
-    println!("Starting to check for XyX");
-    let mut has_criteria = false;
-
-    let mut two_back = ' ';
-    let mut one_back = ' ';
-    for (index, current) in to_check.chars().enumerate() {
-        if current == two_back {
-            has_criteria = true;
-            println!("Found a seperated pair. {index} / {to_check}");
-            break;
+    let chars: Vec<_> = to_check.chars().collect();
+    for index in 0..chars.len() - 2 {
+        if chars[index] == chars[index + 2] {
+            return true
         }
-        two_back = one_back;
-        one_back = current;
     }
-    has_criteria
+    false
 }
 
 fn is_nice(to_check: &str) -> bool {
@@ -58,4 +56,16 @@ fn main() {
     println!("xxyxx is nice -> {}", is_nice("xxyxx"));
     println!("uurcxstgmygtbstg is NOT nice -> {}", is_nice("uurcxstgmygtbstg"));
     println!("ieodomkazucvgmuy is NOT nice -> {}", is_nice("ieodomkazucvgmuy"));
+
+    let binding = read_data("2015_05_data.txt");
+    let lines = binding.lines();
+    let mut num_lines = 0;
+
+    for line in lines {
+        if is_nice(line) {
+            num_lines += 1;
+        }
+    }
+    println!("Found {num_lines} good passwords.");
+
 }

2015/src/bin/2015_06a.rs

@@ -21,7 +21,7 @@
 // turn off 499,499 through 500,500 would turn off (or leave off) the middle four lights.
 // After following the instructions, how many lights are lit?
 
-use aoc::read_data;
+use core::read_data;
 
 fn main() {
     let mut block: [bool; 1000*1000] = [false; 1000*1000];

2015/src/bin/2015_06b.rs

@@ -18,7 +18,7 @@
 // turn on 0,0 through 0,0 would increase the total brightness by 1.
 // toggle 0,0 through 999,999 would increase the total brightness by 2000000.
 
-use aoc::read_data;
+use core::read_data;
 
 fn main() {
     let mut block: Box<[u32; 1000*1000]> = Box::new([0; 1000*1000]);

2015/src/bin/2015_08a.rs

@@ -1,4 +1,4 @@
-use aoc::read_data;
+use core::read_data;
 
 fn main() {
     let binding = read_data("2015_08_data.txt");

2016/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name="aoc2016"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+core = { path = "../core" }
+md-5 = { workspace = true }

2016/src/bin/2016_01a.rs

@@ -27,7 +27,7 @@
 //
 
 use std::{env, fs};
-use aoc::read_data;
+use core::read_data;
 use crate::CardinalDirection::*;
 
 #[derive(Debug)]

2016/src/bin/2016_01b.rs

@@ -28,7 +28,7 @@
 
 use std::{env, fs};
 use std::collections::HashMap;
-use aoc::read_data;
+use core::read_data;
 use crate::CardinalDirection::*;
 
 fn manhattan_distance(directions: &str) -> i32 {

2016/src/bin/2016_02a.rs

@@ -32,7 +32,7 @@
 // Your puzzle input is the instructions from the document you found at the front desk. What is the bathroom code?
 //
 
-use aoc::read_data;
+use core::read_data;
 
 #[derive(Debug)]
 struct Location {

2016/src/bin/2016_03a.rs

@@ -12,7 +12,7 @@
 // example, the "triangle" given above is impossible, because 5 + 10 is not larger than 25.
 //
 
-use aoc::read_data;
+use core::read_data;
 
 // the total of the sides minus the largest side is greater then the longest side
 fn possibly_valid_triangle(a: u32, b: u32, c: u32) -> bool {

2016/src/bin/2016_03b.rs

@@ -1,4 +1,4 @@
-use aoc::read_data;
+use core::read_data;
 
 // the total of the sides minus the largest side is greater then the longest side
 fn possibly_valid_triangle(a: u32, b: u32, c: u32) -> bool {

2016/src/bin/2016_04a.rs

@@ -1,5 +1,5 @@
 use std::collections::{BTreeMap, HashMap};
-use aoc::read_data;
+use core::read_data;
 
 struct EncryptedRoom {
     encrypted_name: String,

2016/src/bin/2016_06a.rs

@@ -32,7 +32,7 @@
 //
 
 use std::collections::HashMap;
-use aoc::read_data;
+use core::read_data;
 
 fn main() {
     let binding = read_data("2016_06_data.txt");

2016/src/bin/2016_06b.rs

@@ -15,7 +15,7 @@
 //
 
 use std::collections::HashMap;
-use aoc::read_data;
+use core::read_data;
 
 fn main() {
     let binding = read_data("2016_06_data.txt");

2017/Cargo.toml

@@ -0,0 +1,7 @@
+[package]
+name="aoc2017"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+core = { path = "../core" }

2017/src/bin/2017_01a.rs

@@ -7,7 +7,7 @@
 // 1234 produces 0 because no digit matches the next.
 // 91212129 produces 9 because the only digit that matches the next one is the last digit, 9.
 
-use aoc::read_data;
+use core::read_data;
 
 fn circular_digit_sum(input: &str) -> u32 {
     let mut running_total = 0;

2017/src/bin/2017_01b.rs

@@ -11,7 +11,7 @@
 // 123123 produces 12.
 // 12131415 produces 4.
 
-use aoc::read_data;
+use core::read_data;
 
 fn halfway_sum_thing(input: &str) -> u32 {
     let mut running_total = 0;

2017/src/bin/2017_02a.rs

@@ -1,4 +1,4 @@
-use aoc::read_data;
+use core::read_data;
 
 fn main() {
     let mut running_total = 0;

2017/src/bin/2017_04a.rs

@@ -9,7 +9,7 @@
 //
 
 use std::collections::HashMap;
-use aoc::read_data;
+use core::read_data;
 
 fn is_valid(input: &str) -> bool {
     let parts = input.split(' ');

2018/Cargo.toml

@@ -0,0 +1,7 @@
+[package]
+name="aoc2018"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+core = { path = "../core" }

2018/src/bin/2018_01a.rs

@@ -2,7 +2,7 @@
 // frequency have been applied?
 
 use std::collections::HashMap;
-use aoc::read_data;
+use core::read_data;
 
 fn main() {
     let mut running_total = 0i32;

2018/src/bin/2018_01b.rs

@@ -1,7 +1,7 @@
 // do part 1a but figure out the first repeated value
 
 use std::collections::HashMap;
-use aoc::read_data;
+use core::read_data;
 
 fn main() {
     let mut visited_locations: HashMap<i32, i32> = HashMap::from([(0, 0)]);

2019/Cargo.toml

@@ -0,0 +1,7 @@
+[package]
+name="aoc2019"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+core = { path = "../core" }

2019/src/bin/2019_01a.rs

@@ -1,6 +1,6 @@
 #![feature(int_roundings)]
 
-use aoc::read_data;
+use core::read_data;
 
 fn fuel_calc(input: u32) -> u32 {
     input.div_floor(3).saturating_sub(2)

2019/src/bin/2019_01b.rs

@@ -1,6 +1,6 @@
 #![feature(int_roundings)]
 
-use aoc::read_data;
+use core::read_data;
 
 fn fuel_calc(input: u32) -> u32 {
     input.div_floor(3).saturating_sub(2)

2019/src/bin/2019_02a.rs

@@ -1,4 +1,4 @@
-use aoc::read_data;
+use core::read_data;
 
 fn main() {
     let directions = read_data("2019_02_data.txt").split(", ");

2020/Cargo.toml

@@ -0,0 +1,7 @@
+[package]
+name="aoc2020"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+core = { path = "../core" }

2020/src/bin/2020_01a.rs

@@ -1,4 +1,4 @@
-use aoc::read_data;
+use core::read_data;
 
 fn main() {
     let binding = read_data("2020_01_data.txt");

2020/src/bin/2020_02a.rs

@@ -1,4 +1,4 @@
-use aoc::read_data;
+use core::read_data;
 
 #[derive(Clone)]
 struct ParsedLine {

2020/src/bin/2020_02b.rs

@@ -1,5 +1,5 @@
 use std::io::{stdout, Write};
-use aoc::read_data;
+use core::read_data;
 
 #[derive(Clone)]
 struct ParsedLine {

2021/Cargo.toml

@@ -0,0 +1,7 @@
+[package]
+name="aoc2021"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+core = { path = "../core" }

2021/src/bin/2021_01a.rs

@@ -1,4 +1,4 @@
-use aoc::read_data;
+use core::read_data;
 
 fn dips(input: &str) -> u32 {
     let mut last_reading = 0;

2021/src/bin/2021_02a.rs

@@ -1,4 +1,4 @@
-use aoc::read_data;
+use core::read_data;
 
 enum CardinalDirection {
     North,

2022/Cargo.toml

@@ -0,0 +1,7 @@
+[package]
+name="aoc2022"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+core = { path = "../core" }

2022/src/bin/2022_01a.rs

@@ -1,4 +1,4 @@
-use aoc::read_data;
+use core::read_data;
 
 fn main() {
     let binding = read_data("2022_01_data.txt");

2022/src/bin/2022_01b.rs

@@ -1,4 +1,4 @@
-use aoc::read_data;
+use core::read_data;
 
 fn main() {
     let binding = read_data("2022_01_data.txt");

2022/src/bin/2022_02a.rs

@@ -1,4 +1,4 @@
-use aoc::read_data;
+use core::read_data;
 use crate::RPSOutcome::{Loss, Tie, Win};
 use crate::RPSPlays::{Paper, Rock, Scissors};
 

2022/src/bin/2022_02b.rs

@@ -1,4 +1,4 @@
-use aoc::read_data;
+use core::read_data;
 use crate::RPSOutcome::{Loss, Tie, Win};
 use crate::RPSPlays::{Paper, Rock, Scissors};
 

2022/src/bin/2022_03a.rs

@@ -1,6 +1,6 @@
 use std::collections::HashSet;
 use std::io::BufRead;
-use aoc::read_data;
+use core::read_data;
 
 
 fn char_to_value(input: char) -> u32 {

2022/src/bin/2022_03b.rs

@@ -1,4 +1,4 @@
-use aoc::read_data;
+use core::read_data;
 
 fn main() {
     let binding = read_data("2022_03_data.txt");

2023/Cargo.toml

@@ -0,0 +1,7 @@
+[package]
+name="aoc2023"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+core = { path = "../core" }

2023/src/bin/2023_01a.rs

@@ -1,4 +1,4 @@
-use aoc::read_data;
+use core::read_data;
 
 fn main() {
     let mut running_total = 0;

2024/Cargo.toml

@@ -0,0 +1,7 @@
+[package]
+name="aoc2024"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+core = { path = "../core" }

Cargo.lock

@@ -3,12 +3,77 @@
 version = 4
 
 [[package]]
-name = "aoc"
+name = "aoc2015"
 version = "0.1.0"
 dependencies = [
+ "core",
  "md-5",
 ]
 
+[[package]]
+name = "aoc2016"
+version = "0.1.0"
+dependencies = [
+ "core",
+ "md-5",
+]
+
+[[package]]
+name = "aoc2017"
+version = "0.1.0"
+dependencies = [
+ "core",
+]
+
+[[package]]
+name = "aoc2018"
+version = "0.1.0"
+dependencies = [
+ "core",
+]
+
+[[package]]
+name = "aoc2019"
+version = "0.1.0"
+dependencies = [
+ "core",
+]
+
+[[package]]
+name = "aoc2020"
+version = "0.1.0"
+dependencies = [
+ "core",
+]
+
+[[package]]
+name = "aoc2021"
+version = "0.1.0"
+dependencies = [
+ "core",
+]
+
+[[package]]
+name = "aoc2022"
+version = "0.1.0"
+dependencies = [
+ "core",
+]
+
+[[package]]
+name = "aoc2023"
+version = "0.1.0"
+dependencies = [
+ "core",
+]
+
+[[package]]
+name = "aoc2024"
+version = "0.1.0"
+dependencies = [
+ "core",
+]
+
 [[package]]
 name = "block-buffer"
 version = "0.10.4"
@@ -24,6 +89,10 @@ version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2fd1289c04a9ea8cb22300a459a72a385d7c73d3259e2ed7dcb2af674838cfa9"
 
+[[package]]
+name = "core"
+version = "0.1.0"
+
 [[package]]
 name = "crypto-common"
 version = "0.1.6"

Cargo.toml

@@ -1,7 +1,18 @@
-[package]
-name="aoc"
-version = "0.1.0"
-edition = "2024"
+[workspace]
+members = [
+    "core",
+    "2015",
+    "2016",
+    "2017",
+    "2018",
+    "2019",
+    "2020",
+    "2021",
+    "2022",
+    "2023",
+    "2024"
+]
+resolver = "2"
 
-[dependencies]
-md-5 = "0.10"
+[workspace.dependencies]
+md-5 = { version = "0.10" }

core/Cargo.toml

@@ -0,0 +1,4 @@
+[package]
+name = "core"
+version = "0.1.0"
+edition = "2024"

core/src/lib.rs

@@ -1,10 +1,13 @@
+use std::io::{stdout, Write};
+
 /// AOC Lib
 /// Generic methods for loading various data inputs from
 /// the AOC project.
 
 pub fn data_path(suffix: &str) -> String {
     let path = std::env::var("CARGO_MANIFEST_DIR").unwrap();
-    format!("{}/data/{}", path, suffix)
+    stdout().flush().unwrap();
+    format!("{}/../data/{}", path, suffix)
 }
 
 pub fn read_data(suffix: &str) -> String {