init

d21/src/a1.rs

@@ -0,0 +1,4 @@
+
+pub fn run(inp :Vec<String>) {
+    
+}

d21/src/a2.rs

@@ -0,0 +1,5 @@
+
+
+pub fn run(inp :Vec<String>) {
+    
+}

d21/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);
+    
+}