day 3 part 1

2024/day3/part1/Cargo.lock

@@ -0,0 +1,54 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "aho-corasick"
+version = "1.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e60d3430d3a69478ad0993f19238d2df97c507009a52b3c10addcd7f6bcb916"
+dependencies = [
+ "memchr",
+]
+
+[[package]]
+name = "day3"
+version = "0.1.0"
+dependencies = [
+ "regex",
+]
+
+[[package]]
+name = "memchr"
+version = "2.7.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "78ca9ab1a0babb1e7d5695e3530886289c18cf2f87ec19a575a0abdce112e3a3"
+
+[[package]]
+name = "regex"
+version = "1.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b544ef1b4eac5dc2db33ea63606ae9ffcfac26c1416a2806ae0bf5f56b201191"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-automata",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-automata"
+version = "0.4.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "809e8dc61f6de73b46c85f4c96486310fe304c434cfa43669d7b40f711150908"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-syntax"
+version = "0.8.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2b15c43186be67a4fd63bee50d0303afffcef381492ebe2c5d87f324e1b8815c"

2024/day3/part1/Cargo.toml

@@ -0,0 +1,7 @@
+[package]
+name = "day3"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+regex = "1.11.1"

2024/day3/part1/src/main.rs

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+use regex::Regex;
+use std::fs::read_to_string;
+
+fn main() {
+    let lines: Vec<String> = read_to_string("input.txt")
+        .unwrap()
+        .lines()
+        .map(String::from)
+        .collect();
+    let pattern1 = Regex::new(r"mul\((\d+,\d+)\)").unwrap();
+    let pattern2 = Regex::new(r"mul\((\d+)\,(\d+)\)").unwrap();
+
+    let mut finalvec1 = mul_parse(lines, pattern1);
+    let finalint = mul_process(finalvec1,pattern2);
+    println!("{:?}",finalint)
+}
+
+
+fn mul_parse(thelines: Vec<String>, pattern: Regex) -> Vec<String>{
+    let mut mulvec: Vec<String> = Vec::new();
+    for i in thelines {
+        let tempvec: Vec<String> =
+            pattern.find_iter(&i)
+                .filter_map(|fr| fr.as_str().parse::<String>().ok()).collect();
+
+        for i2 in tempvec {
+            mulvec.push(i2);
+        }
+
+    }
+    mulvec
+
+}
+
+fn mul_process(mulvec: Vec<String>, pattern: Regex) -> i64 {
+    let mut mulint: i64 = 0;
+    for i in mulvec {
+        let captures = pattern.captures(&i).unwrap();
+        let capture1 = captures.get(1).unwrap().as_str().parse::<i32>().unwrap();
+
+        let capture2 = captures.get(2).unwrap().as_str().parse::<i32>().unwrap();
+        mulint += (capture1 * capture2) as i64;
+    }
+
+
+    mulint
+
+}