Added template (see 2022) + Day 2 completed

day2/common.py

@@ -0,0 +1,20 @@
+type Report = tuple[int, ...]
+type ReportList = list[Report]
+
+
+def parse(filename: str) -> ReportList:
+    report_list: ReportList = []
+    with open(filename) as f:
+        while line := f.readline().strip("\n"):
+            report: Report = tuple(int(digit) for digit in line.split())
+            report_list.append(report)
+    return report_list
+
+
+def is_safe(report: Report) -> bool:
+    if not (report == tuple(sorted(report)) or report == tuple(sorted(report, reverse=True))):
+        return False
+    for i, value in enumerate(report[:-1]):
+        if abs(value - report[i + 1]) > 3 or value == report[i + 1]:
+            return False
+    return True

day2/part1.py

@@ -0,0 +1,14 @@
+#!/usr/bin/env python
+from common import ReportList, is_safe, parse
+
+
+def solve(input: ReportList) -> int:
+    return len(list(filter(is_safe, input)))
+
+
+def main():
+    print(solve(parse("input")))
+
+
+if __name__ == "__main__":
+    main()

day2/part2.py

@@ -0,0 +1,22 @@
+#!/usr/bin/env python
+from common import Report, ReportList, is_safe, parse
+
+
+def report_remove(report: Report, index: int) -> Report:
+    return report[:index] + report[index + 1 :]
+
+
+def is_safe_dampened(report: Report) -> bool:
+    return is_safe(report) or any(map(is_safe, map(lambda x: report_remove(report, x[0]), enumerate(report))))
+
+
+def solve(input: ReportList) -> int:
+    return len(list(filter(is_safe_dampened, input)))
+
+
+def main():
+    print(solve(parse("input")))
+
+
+if __name__ == "__main__":
+    main()