From 5199074512eae8137500414bec49e333e8218458 Mon Sep 17 00:00:00 2001
From: Holly McFarland <me@hollymcfarland.com>
Date: Fri, 5 Dec 2025 23:28:48 -0500
Subject: [PATCH] day 2

---
 day-02/part-1.py | 22 ++++++++++++++++++++++
 day-02/part-2.py | 23 +++++++++++++++++++++++
 2 files changed, 45 insertions(+)
 create mode 100644 day-02/part-1.py
 create mode 100644 day-02/part-2.py

diff --git a/day-02/part-1.py b/day-02/part-1.py
new file mode 100644
index 0000000..15a4307
--- /dev/null
+++ b/day-02/part-1.py
@@ -0,0 +1,22 @@
+import aocd
+
+def parse(data):
+    for range_ in data.strip().split(','):
+        yield range_.split('-')
+
+def num_invalid(low, high):
+    low_int, high_int = int(low), int(high)
+
+    for id in map(str, range(low_int, high_int+1)):
+        if len(id) % 2: continue
+        if id[:len(id)//2] == id[len(id)//2:]:
+            yield int(id)
+
+def main(data):
+    ranges = parse(data)
+    return sum(sum(num_invalid(*r)) for r in ranges)
+
+if __name__ == '__main__':
+    solution = main(aocd.get_data(day=2, year=2025))
+    print(solution)
+    aocd.submit(solution, part='a', day=2, year=2025)
\ No newline at end of file
diff --git a/day-02/part-2.py b/day-02/part-2.py
new file mode 100644
index 0000000..ed15515
--- /dev/null
+++ b/day-02/part-2.py
@@ -0,0 +1,23 @@
+import aocd
+
+import re
+
+def parse(data):
+    for range_ in data.strip().split(','):
+        yield range_.split('-')
+
+def num_invalid(low, high):
+    low_int, high_int = int(low), int(high)
+
+    for id in range(low_int, high_int+1):
+        if re.match(r'^((.+)\2+)$', str(id)):
+            yield int(id)
+
+def main(data):
+    ranges = parse(data)
+    return sum(sum(num_invalid(*r)) for r in ranges)
+
+if __name__ == '__main__':
+    solution = main(aocd.get_data(day=2, year=2025))
+    print(solution)
+    aocd.submit(solution, part='b', day=2, year=2025)
\ No newline at end of file