day 2 1

src/day_1_2.rs

@@ -33,6 +33,4 @@ pub fn solve_day_1_2() {
 
     println!("{similarity}");
 
-
-
 }

src/day_2_1.rs

@@ -0,0 +1,33 @@
+use std::fs;
+
+pub fn solve_day_2_1() {
+    let file_path = "/home/clement/RustroverProjects/advent_of_code/src/inputs/input_2.txt";
+    println!("In file {file_path}");
+
+    let contents = fs::read_to_string(file_path)
+        .expect("Something went wrong reading the file")
+        .split("\n")
+        .map(|x| {
+            x.split(" ").map(|y| y.parse::<i32>().unwrap()).collect::<Vec<i32>>()
+        }).collect::<Vec<Vec<i32>>>();
+
+    let first_diff_sign = contents
+        .iter()
+        .map(|vec| vec[1] - vec[0] > 0);
+
+    let is_safe_list = contents
+        .iter()
+        .map(|vec| vec.windows(2))
+        .zip(first_diff_sign)
+        .map(|(mut vec_win, should_increase)| {
+            vec_win.all(|win| (
+                win[1] - win[0]).abs() <= 3 &&
+                (win[1] - win[0] > 0) == should_increase &&
+                win[1] != win[0])
+        });
+
+    let ans = is_safe_list.filter(|x| *x).count();
+
+    println!("{:?}", ans);
+
+}

src/main.rs

@@ -1,11 +1,14 @@
-mod day_1_1;
-mod day_1_2;
+// mod day_1_1;
+// mod day_1_2;
+mod day_2_1;
 
-use crate::day_1_1::solve_day_1_1;
-use crate::day_1_2::solve_day_1_2;
+// use crate::day_1_1::solve_day_1_1;
+// use crate::day_1_2::solve_day_1_2;
+use crate::day_2_1::solve_day_2_1;
 
 fn main() {
     println!("Hello, world!");
     // solve_day_1_1();
-    solve_day_1_2();
+    //solve_day_1_2();
+    solve_day_2_1();
 }