1 files changed, 12 insertions, 0 deletions
diff --git a/2025/02/puzzles.sh b/2025/02/puzzles.sh
new file mode 100644
index 0000000..0ad12cc
--- /dev/null
+++ b/2025/02/puzzles.sh
@@ -0,0 +1,12 @@
+#!/bin/sh
+
+# START PART 1
+readonly REGEXP='^([0-9]+)\1$'
+# END PART 1 START PART 2
+readonly REGEXP='^([0-9]+)\1+$'
+# END PART 2
+
+tr ',' '\n' <input | while IFS=- read -r x y
+do
+	seq -f %1.0f $x $y
+done | grep -E "$REGEXP" | awk '{ n += $1 } END { print n }'