2022 - Day 4

2022/04/solution.ts

@@ -0,0 +1,42 @@
+const sample = await Deno.readTextFile("sample.txt");
+const input = await Deno.readTextFile("input.txt");
+
+const solvePart1 = (data: string): number =>
+  data
+    .split("\n")
+    .filter(Boolean)
+    .map((line) =>
+      line
+        .split(",")
+        .map((section) =>
+          section.split("-").map((value) => parseInt(value, 10))
+        )
+    )
+    .filter(
+      ([section1, section2]) =>
+        (section1[0] <= section2[0] && section1[1] >= section2[1]) ||
+        (section2[0] <= section1[0] && section2[1] >= section1[1])
+    ).length;
+
+console.log("Sample:", solvePart1(sample));
+console.log("Input", solvePart1(input));
+
+const solvePart2 = (data: string): number =>
+  data
+    .split("\n")
+    .filter(Boolean)
+    .map((line) =>
+      line
+        .split(",")
+        .map((section) =>
+          section.split("-").map((value) => parseInt(value, 10))
+        )
+    )
+    .filter(
+      ([section1, section2]) =>
+        (section1[0] <= section2[1] && section1[1] >= section2[0]) ||
+        (section2[0] <= section1[1] && section2[1] >= section1[0])
+    ).length;
+
+console.log("Sample:", solvePart2(sample));
+console.log("Input", solvePart2(input));