Day 02

src/Year_2024/Day_02.jl

@@ -0,0 +1,23 @@
+using BenchmarkTools
+using StatsBase
+
+function is_safe(report)
+    diffs = diff(report)
+    all(3 .>= diffs .> 0) || all(0 .> diffs .>= -3)
+end
+
+function is_safer(report)
+    any(is_safe(vcat(report[1:i-1], report[i+1:end])) for i in 1:length(report))
+end
+
+function Day_02()
+    reports = [parse.(Int, split(line)) for line in readlines("files/P2.txt")]
+
+    p1 = count(is_safe, reports)
+    p2 = count(is_safer, reports)
+
+    return p1, p2
+end
+
+println(Day_02())
+@btime Day_02()

src/Year_2024/Day_02.py

@@ -0,0 +1,29 @@
+from utils import timeit
+
+
+def is_safe(report):
+    diff = [(int(j) - int(i)) for i, j in zip(report[:-1], report[1:])]
+    return all(3 >= num > 0 for num in diff) or all(
+        0 > num >= -3 for num in diff
+    )
+
+
+def is_safer(report):
+    return any(
+        is_safe([*report[:i], *report[i + 1 :]]) for i in range(len(report))
+    )
+
+
+@timeit()
+def Day_02():
+    with open("files/P2.txt") as f:
+        reports = [lines.split() for lines in f.read().strip().split("\n")]
+
+        p1 = sum(1 for level in reports if is_safe(level))
+        p2 = sum(1 for report in reports if is_safer(report))
+
+    return p1, p2
+
+
+if __name__ == "__main__":
+    Day_02()