init

d03/src/a1.rs

@@ -0,0 +1,20 @@
+
+pub fn run(inp :Vec<String>) {
+    
+    let result = inp.iter().map(|elem| {
+        let tmp = elem.split_at(elem.chars().count() / 2);
+        
+        for c in tmp.0.chars() {
+            if tmp.1.contains(c) {
+                
+                return c.to_ascii_lowercase() as i32 - 'a' as i32 + 1 + if c.is_uppercase() {26} else {0}; 
+            }
+        }
+        
+        0
+        
+    }).sum::<i32>(); 
+
+    println!("a1: {}", result); 
+
+}

d03/src/a2.rs

@@ -0,0 +1,19 @@
+pub fn run(inp: Vec<String>) {
+
+    let mut sum = 0; 
+
+    for w in inp.chunks(3) {
+        'outer: for c in w[0].chars() {
+            if w[1].contains(c) && w[2].contains(c) {
+                let a = c.to_ascii_lowercase() as i32 - 'a' as i32
+                    + 1
+                    + if c.is_uppercase() { 26 } else { 0 };
+
+                sum += a; 
+                break 'outer; 
+            }
+        }
+    }
+
+    println!("a2: {}", sum);
+}

d03/src/main.rs

@@ -0,0 +1,41 @@
+use std::io::BufRead; 
+
+mod a1; 
+mod a2; 
+
+fn read_file(path :&str) -> Vec<String> {
+
+    let file = std::fs::File::open(path); 
+    
+    return match file {
+     
+        Ok(handle) => {
+
+            let reader = std::io::BufReader::new(handle);
+
+            let mut vec : Vec<String> = vec![]; 
+
+            reader.lines().for_each(|elem| {
+                vec.push(elem.unwrap()); 
+            }); 
+
+            vec
+
+        }
+
+        Err(_) => vec![] 
+
+        
+    }
+
+}
+
+fn main() {
+    
+    let inp :Vec<String> = read_file("input.txt"); 
+
+    a1::run(inp.clone()); 
+
+    a2::run(inp);
+    
+}