Day 5: CPU jumps

1 files changed, 25 insertions, 0 deletions

diff --git a/src/bin/day_5.rs b/src/bin/day_5.rs
new file mode 100644
index 0000000..49bdbd1
--- /dev/null
+++ b/src/bin/day_5.rs
@@ -0,0 +1,25 @@
+extern crate advent_of_code_2017;
+use advent_of_code_2017::*;
+
+fn main() {
+    let args = AdventArgs::init();
+
+    let mut jumps: Vec<i32> = args.input.iter().map(|line| line.parse().unwrap()).collect();
+    let mut steps_taken = 0;
+    let mut current_position: i32 = 0;
+
+    while current_position >= 0 && (current_position as usize) < jumps.len() {
+        let previous_position = current_position;
+        current_position += jumps[current_position as usize];
+
+        if args.part == 1 || jumps[previous_position as usize] < 3 {
+            jumps[previous_position as usize] += 1;
+        } else {
+            jumps[previous_position as usize] -= 1;
+        }
+        
+        steps_taken += 1;
+    }
+
+    println!("Escaped in {} jumps", steps_taken);
+}