From 37aad254224e0974cd606500dd8c44b5be037fdb Mon Sep 17 00:00:00 2001
From: Stefan Harmuth <stefan.harmuth@docomodigital.com>
Date: Sat, 27 Nov 2021 06:00:13 +0100
Subject: [PATCH] day04

---
 day04.py       | 45 +++++++++++++++++++++++++++++++++++++++++++++
 inputs/input04 |  1 +
 2 files changed, 46 insertions(+)
 create mode 100644 day04.py
 create mode 100644 inputs/input04

diff --git a/day04.py b/day04.py
new file mode 100644
index 0000000..09b230e
--- /dev/null
+++ b/day04.py
@@ -0,0 +1,45 @@
+from aoc import AOCDay
+from typing import Any
+
+
+class Day(AOCDay):
+    test_solutions_p1 = []
+    test_solutions_p2 = []
+
+    def part1(self) -> Any:
+        low, hi = map(int, self.input[0].split("-"))
+        count = 0
+        for x in range(low, hi + 1):
+            d0 = x // 100_000
+            d1 = x % 100_000 // 10_000
+            d2 = x % 10_000 // 1_000
+            d3 = x % 1_000 // 100
+            d4 = x % 100 // 10
+            d5 = x % 10
+
+            if d0 <= d1 <= d2 <= d3 <= d4 <= d5:
+                if d0 == d1 or d1 == d2 or d2 == d3 or d3 == d4 or d4 == d5:
+                    count += 1
+
+        return count
+
+    def part2(self) -> Any:
+        low, hi = map(int, self.input[0].split("-"))
+        count = 0
+        for x in range(low, hi + 1):
+            d0 = x // 100_000
+            d1 = x % 100_000 // 10_000
+            d2 = x % 10_000 // 1_000
+            d3 = x % 1_000 // 100
+            d4 = x % 100 // 10
+            d5 = x % 10
+
+            if d0 <= d1 <= d2 <= d3 <= d4 <= d5:
+                if (d0 == d1 and d1 != d2) \
+                        or (d1 == d2 and d2 != d3 and d1 != d0) \
+                        or (d2 == d3 and d3 != d4 and d2 != d1) \
+                        or (d3 == d4 and d4 != d5 and d3 != d2) \
+                        or (d4 == d5 and d4 != d3):
+                    count += 1
+
+        return count
diff --git a/inputs/input04 b/inputs/input04
new file mode 100644
index 0000000..6190bcb
--- /dev/null
+++ b/inputs/input04
@@ -0,0 +1 @@
+245318-765747