added 2024 part 2

2024/02/Rust/.gitignore

@@ -0,0 +1 @@
+/target

2024/02/Rust/Cargo.lock

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+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "day_2"
+version = "0.1.0"

2024/02/Rust/Cargo.toml

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+[package]
+name = "day_2"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]

2024/02/Rust/src/example.txt

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+7 6 4 2 1
+1 2 7 8 9
+9 7 6 2 1
+1 3 2 4 5
+8 6 4 4 1
+1 3 6 7 9

2024/02/Rust/src/main.rs

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+use std::{fs, process};
+
+fn main() {
+    let file_name = "./src/input.txt";
+    let reports: Vec<Vec<i32>>;
+    match fs::read_to_string(file_name) {
+        Ok(data) => {
+            reports = data
+            .split("\r\n")
+            .map(|report|
+                report
+                .split(" ")
+                .map(|level| level
+                    .parse::<i32>().unwrap())
+                .collect())
+            .collect()
+        },
+        Err(error) => {
+            println!("Failed to read file {file_name}: {error}");
+            process::exit(1);
+        },
+    }
+    let levels_per_report = reports
+        .iter()
+        .map(|report| {
+            report
+            .windows(2)
+            .map(|slice| slice[0] - slice[1])
+            .collect::<Vec<i32>>()
+        })
+        .collect::<Vec<Vec<i32>>>();
+    let same_sign_reports = levels_per_report
+        .iter()
+        .map(|report| {
+            report
+            .iter()
+            .skip(1)
+            //.fold(init, f)
+            .all(|level| (*level >= 0) == (*report.first().unwrap() >= 0))
+        })
+        .collect::<Vec<bool>>();
+    let in_range_reports = levels_per_report
+        .iter()
+        .map(|report| {
+            report
+            .iter()
+            .all(|level| level.abs() >= 1 && level.abs() <= 3)
+        })
+        .collect::<Vec<bool>>();
+    let safe_reports = same_sign_reports
+    .iter()
+    .copied()
+    .zip(in_range_reports.iter().copied())
+    .map(|(l, r)| l && r)
+    .fold(0, |acc, report| acc + report as i32);
+    //.collect::<u32>();
+    
+    //println!("Reports:\n{:?}", reports);
+    //println!("Levels Per Report:\n{:?}", levels_per_report);
+    //println!("Same Sign Reports:\n{:?}", same_sign_reports);
+    //println!("In Range Reports:\n{:?}", in_range_reports);
+    println!("Safe Reports:\n{:?}", safe_reports);
+    process::exit(0)
+}