Day 8 part 2

2021/src/day8.rs

@@ -180,7 +180,7 @@ fn build_lookup(input: &str) -> Result<HashMap<String, &str>> {
     // 2, 3 and 5 have 5 segments:
     // 3 has overlap w/ 1
     // 5 is a subset of 9
-    // 2 is the left overs.
+    // 2 isn't a subset of 6.
     set.iter().filter(|s| s.len() == 5).for_each(|d| {
         let s: HashSet<_> = d.chars().collect();
         let one_int: HashSet<_> = s.intersection(&one).cloned().collect();