day 6

day6/src/main.rs

@@ -0,0 +1,32 @@
+extern crate queue;
+use std::collections::HashSet;
+
+use queue::Queue;
+
+fn main() {
+    const INPUT: &str = include_str!("../sample_input.txt");
+
+    let mut buf: Queue<char> = Queue::with_capacity(4);
+    let mut msg_buf: Queue<char> = Queue::with_capacity(14);
+
+    let mut found_start = false;
+
+    for (i, c) in INPUT.chars().enumerate() {
+        if buf.force_queue(c) == 4 && !found_start {
+            let x = HashSet::<&char>::from_iter(buf.vec().iter()).len();
+            if x == 4 {
+                println!("{} {:?}", i + 1, buf);
+                found_start = true;
+            }
+        }
+
+        if msg_buf.force_queue(c) == 14 {
+            let x = HashSet::<&char>::from_iter(msg_buf.vec().iter()).len();
+            if x == 14 {
+                println!("{} {:?}", i + 1, msg_buf);
+                break;
+            }
+        }
+    }
+
+}