Add day2

1 files changed, 34 insertions, 0 deletions

diff --git a/day2/src/main.rs b/day2/src/main.rs
new file mode 100644
index 0000000..e0153a3
--- /dev/null
+++ b/day2/src/main.rs
@@ -0,0 +1,34 @@
+use std::fs::File;
+use std::io::prelude::*;
+use std::io::BufReader;
+
+fn main() {
+    let file = File::open("input.txt").unwrap();
+    let reader = BufReader::new(&file);
+    let tokens: Vec<String> = reader.lines().map(|x| x.unwrap()).collect::<Vec<String>>();
+    let mut xpos: u32 = 0;
+    let mut ypos: u32 = 0;
+    let mut aim: u32 = 0;
+
+    for line in tokens {
+        let command: Vec<&str> = line.split(" ").collect();
+        let (action, value) = (command[0], command[1].parse::<u32>().unwrap());
+
+        match action {
+            "forward" => {
+                xpos += value;
+                ypos += aim * value;
+            }
+            "down" => {
+                // ypos += value;
+                aim += value;
+            }
+            "up" => {
+                // ypos -= value;
+                aim -= value;
+            }
+            _ => {}
+        }
+    }
+    println!("{}", ypos * xpos);
+}