Initial commit: Days 1 - 5

day02.sql

@@ -0,0 +1,39 @@
+with
+bounds as (
+    select
+        unnest(string_split(trim(content, '\n'), ',')) as f,
+        string_split(f, '-') as bounds,
+        cast(bounds[1] as int64) as low,
+        cast(bounds[2] as int64) as high
+    from read_text('data/02.in')
+),
+
+candidates as (
+    select
+        unnest(range(low, high + 1)) as num,
+        cast(num as string) as num_str,
+        len(num_str) as len
+    from bounds
+),
+
+part1 as (
+    select sum(num) as solution
+    from candidates
+    where num_str[: len // 2] = num_str[len // 2 + 1:]
+),
+
+part2 as (
+    select sum(num) as solution
+    from candidates
+    where exists (
+        select stride from range(1, len) as range (stride)
+        where
+            len % stride = 0
+            and repeat(num_str[: stride], len // stride) = num_str
+    )
+)
+
+select
+    part1.solution as p1,
+    part2.solution as p2
+from part1, part2;