From d835e286f7488490c044e805bb9bf77db612639f Mon Sep 17 00:00:00 2001
From: Tabby <41929769+tabby-cat-nya@users.noreply.github.com>
Date: Tue, 2 Dec 2025 05:43:15 +0000
Subject: [PATCH] have started on day 2, might need some help with ranges?

---
 aoc-2/Cargo.lock      | 54 +++++++++++++++++++++++++++++++++++++++++++
 aoc-2/Cargo.toml      |  7 ++++++
 aoc-2/src/example.txt |  1 +
 aoc-2/src/input.txt   |  1 +
 aoc-2/src/main.rs     | 35 ++++++++++++++++++++++++++++
 5 files changed, 98 insertions(+)
 create mode 100644 aoc-2/Cargo.lock
 create mode 100644 aoc-2/Cargo.toml
 create mode 100644 aoc-2/src/example.txt
 create mode 100644 aoc-2/src/input.txt
 create mode 100644 aoc-2/src/main.rs

diff --git a/aoc-2/Cargo.lock b/aoc-2/Cargo.lock
new file mode 100644
index 0000000..76058ac
--- /dev/null
+++ b/aoc-2/Cargo.lock
@@ -0,0 +1,54 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "aho-corasick"
+version = "1.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ddd31a130427c27518df266943a5308ed92d4b226cc639f5a8f1002816174301"
+dependencies = [
+ "memchr",
+]
+
+[[package]]
+name = "aoc-2"
+version = "0.1.0"
+dependencies = [
+ "regex",
+]
+
+[[package]]
+name = "memchr"
+version = "2.7.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f52b00d39961fc5b2736ea853c9cc86238e165017a493d1d5c8eac6bdc4cc273"
+
+[[package]]
+name = "regex"
+version = "1.12.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "843bc0191f75f3e22651ae5f1e72939ab2f72a4bc30fa80a066bd66edefc24d4"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-automata",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-automata"
+version = "0.4.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5276caf25ac86c8d810222b3dbb938e512c55c6831a10f3e6ed1c93b84041f1c"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-syntax"
+version = "0.8.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7a2d987857b319362043e95f5353c0535c1f58eec5336fdfcf626430af7def58"
diff --git a/aoc-2/Cargo.toml b/aoc-2/Cargo.toml
new file mode 100644
index 0000000..c3865e4
--- /dev/null
+++ b/aoc-2/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "aoc-2"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+regex = "1.12.2"
diff --git a/aoc-2/src/example.txt b/aoc-2/src/example.txt
new file mode 100644
index 0000000..bd04584
--- /dev/null
+++ b/aoc-2/src/example.txt
@@ -0,0 +1 @@
+11-22,95-115,998-1012,1188511880-1188511890,222220-222224,1698522-1698528,446443-446449,38593856-38593862,565653-565659,824824821-824824827,2121212118-2121212124
\ No newline at end of file
diff --git a/aoc-2/src/input.txt b/aoc-2/src/input.txt
new file mode 100644
index 0000000..bfcd4e3
--- /dev/null
+++ b/aoc-2/src/input.txt
@@ -0,0 +1 @@
+5959566378-5959623425,946263-1041590,7777713106-7777870316,35289387-35394603,400-605,9398763-9592164,74280544-74442206,85684682-85865536,90493-179243,202820-342465,872920-935940,76905692-76973065,822774704-822842541,642605-677786,3759067960-3759239836,1284-3164,755464-833196,52-128,3-14,30481-55388,844722790-844967944,83826709-83860070,9595933151-9595993435,4216-9667,529939-579900,1077949-1151438,394508-486310,794-1154,10159-17642,5471119-5683923,16-36,17797-29079,187-382
\ No newline at end of file
diff --git a/aoc-2/src/main.rs b/aoc-2/src/main.rs
new file mode 100644
index 0000000..dd0b60f
--- /dev/null
+++ b/aoc-2/src/main.rs
@@ -0,0 +1,35 @@
+// within certain rnages, find numbers with a pattern repeated exactly twice
+// eg "55" ("5" twice), "6464" ("64" twice), "123123"
+// cannot be matches on numebrs with an odd number of digits
+// compare the first half of the didgits to the second half
+// save all the matches (invalid id's) to a list and add them up to produce the solution
+// each rnage can have 0 or more invalid id's
+// need to parse each range (probably regex), get start and end value for each 
+
+use std::fs;
+use regex::Regex;
+
+fn main() {
+    println!("Lets begin, day 2, part 1");
+    let file_path = "src/input.txt";
+    // let file_path = "src/example.txt";
+
+    // split up input by "," and "-"
+    // (?<start_range>\d*)-(?<end_range>\d*)
+    let re = Regex::new(r"(?<start_range>\d*)-(?<end_range>\d*)").unwrap();
+    let line = fs::read_to_string(file_path).unwrap();
+    println!("{line}");
+
+    // let mut results = vec![];
+
+    // parse the provided ranges into paits
+    let ranges: Vec<(i32, i32)> = re.captures_iter(&line).map(|caps| {
+        let start: i32 = caps.name("start_range").unwrap().as_str().parse::<i32>().unwrap();
+        let end: i32 = caps.name("end_range").unwrap().as_str().parse::<i32>().unwrap();
+        (start, end)
+    }).collect();
+
+    println!("{ranges:?}");
+
+
+}