first

.gitignore

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+/target

.idea/.gitignore

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+# Default ignored files
+/shelf/
+/workspace.xml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml

.idea/advent_of_code.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module type="EMPTY_MODULE" version="4">
+  <component name="NewModuleRootManager">
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+      <excludeFolder url="file://$MODULE_DIR$/target" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

.idea/modules.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/advent_of_code.iml" filepath="$PROJECT_DIR$/.idea/advent_of_code.iml" />
+    </modules>
+  </component>
+</project>

.idea/vcs.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>

Cargo.lock

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+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "advent_of_code"
+version = "0.1.0"

Cargo.toml

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+[package]
+name = "advent_of_code"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

src/day_1_1.rs

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+use std::env;
+use std::fs;
+use std::path::Iter;
+
+pub fn solve_day_1_1() {
+    // --snip--
+    let file_path = "/home/clement/RustroverProjects/advent_of_code/src/inputs/input_1.txt";
+    println!("In file {file_path}");
+
+    let (mut l_list, mut r_list) : (Vec<i32>, Vec<i32>) = fs::read_to_string(file_path)
+        .expect("Should have been able to read the file")
+        .split('\n')
+        .map(|s|{
+            let mut splited = s.split_whitespace();
+            (
+                splited.next().unwrap().parse::<i32>().unwrap(),
+                splited.next().unwrap().parse::<i32>().unwrap()
+            )
+        }).unzip();
+
+    l_list.sort();
+    r_list.sort();
+    let ans = l_list.iter().zip(r_list.iter()).map(|(l, r)| (l - r).abs()).sum::<i32>();
+    println!("{}", ans);
+
+}

src/day_1_2.rs

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+use std::env;
+use std::fs;
+use std::path::Iter;
+
+pub fn solve_day_1_2() {
+    // --snip--
+    let file_path = "/home/clement/RustroverProjects/advent_of_code/src/inputs/input_1.txt";
+    println!("In file {file_path}");
+
+    let (mut l_list, mut r_list) : (Vec<i32>, Vec<i32>) = fs::read_to_string(file_path)
+        .expect("Should have been able to read the file")
+        .split('\n')
+        .map(|s|{
+            let mut splited = s.split_whitespace();
+            (
+                splited.next().unwrap().parse::<i32>().unwrap(),
+                splited.next().unwrap().parse::<i32>().unwrap()
+            )
+        }).unzip();
+
+    l_list.sort();
+}

src/main.rs

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+mod day_1_1;
+mod day_1_2;
+
+use crate::day_1_1::solve_day_1_1;
+
+fn main() {
+    println!("Hello, world!");
+    // solve_day_1_1();
+}