Day One solution

src/bin/run.rs

@@ -1,5 +1,7 @@
 #![allow(unused)]
 
+use std::fmt::format;
+
 use aoc_2023::Args;
 use clap::Parser;
 
@@ -45,74 +47,131 @@ fn main() {
 }
 
 fn day_1(input: String) {
-    todo!()
+    let mut result = vec![];
+
+    // Yes this is very ugly, I don't care lol
+    let input = input.replace("one", "o1e");
+    let input = input.replace("two", "t2o");
+    let input = input.replace("three", "t3e");
+    let input = input.replace("four", "f4r");
+    let input = input.replace("five", "f5e");
+    let input = input.replace("six", "s6x");
+    let input = input.replace("seven", "s7n");
+    let input = input.replace("eight", "e8t");
+    let input = input.replace("nine", "n9e");
+
+    for value in input
+        .lines()
+        .map(|line| {
+            line.chars()
+                .filter(|char| char.is_numeric())
+                .map(|char| char.to_string())
+                .collect::<String>()
+        })
+        .collect::<Vec<String>>()
+    {
+        let first = value.chars().next().unwrap();
+        let second = match value.chars().last() {
+            None => first,
+            Some(v) => v,
+        };
+
+        result.push(format!("{first}{second}"));
     }
+
+    let result: usize = result.iter().map(|v| v.parse::<usize>().unwrap()).sum();
+
+    println!("{result:?}");
+}
+
 fn day_2(input: String) {
     todo!()
 }
+
 fn day_3(input: String) {
     todo!()
 }
+
 fn day_4(input: String) {
     todo!()
 }
+
 fn day_5(input: String) {
     todo!()
 }
+
 fn day_6(input: String) {
     todo!()
 }
+
 fn day_7(input: String) {
     todo!()
 }
+
 fn day_8(input: String) {
     todo!()
 }
+
 fn day_9(input: String) {
     todo!()
 }
+
 fn day_10(input: String) {
     todo!()
 }
+
 fn day_11(input: String) {
     todo!()
 }
+
 fn day_12(input: String) {
     todo!()
 }
+
 fn day_13(input: String) {
     todo!()
 }
+
 fn day_14(input: String) {
     todo!()
 }
+
 fn day_15(input: String) {
     todo!()
 }
+
 fn day_16(input: String) {
     todo!()
 }
+
 fn day_17(input: String) {
     todo!()
 }
+
 fn day_18(input: String) {
     todo!()
 }
+
 fn day_19(input: String) {
     todo!()
 }
+
 fn day_20(input: String) {
     todo!()
 }
+
 fn day_21(input: String) {
     todo!()
 }
+
 fn day_22(input: String) {
     todo!()
 }
+
 fn day_23(input: String) {
     todo!()
 }
+
 fn day_24(input: String) {
     todo!()
 }