From daeee1aa51737e95e8d5743147d2097d0a769cf5 Mon Sep 17 00:00:00 2001
From: Flxw <lxcalflxw@gmail.com>
Date: Sun, 4 Dec 2022 11:06:37 +0100
Subject: [PATCH] feat: day04 part 1

---
 day04/input.txt | 1000 +++++++++++++++++++++++++++++++++++++++++++++++
 day04/mod.ts    |   29 ++
 mod.ts          |    9 +-
 3 files changed, 1037 insertions(+), 1 deletion(-)
 create mode 100644 day04/input.txt
 create mode 100644 day04/mod.ts

diff --git a/day04/input.txt b/day04/input.txt
new file mode 100644
index 0000000..8e62d71
--- /dev/null
+++ b/day04/input.txt
@@ -0,0 +1,1000 @@
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diff --git a/day04/mod.ts b/day04/mod.ts
new file mode 100644
index 0000000..e0c74dc
--- /dev/null
+++ b/day04/mod.ts
@@ -0,0 +1,29 @@
+import { readFileLines } from '../utils.ts';
+
+export function day04_01() {
+    const lines = readFileLines('/day04/input.txt');
+    let totalOverlaps = 0;
+    for (const line of lines) {
+        if (line === '') continue;
+        const [first, second] = line.split(',');
+        const [firstLowerBound, firstUpperBound] = first
+            .split('-')
+            .map((val) => parseInt(val));
+        const [secondLowerBound, secondUpperBound] = second
+            .split('-')
+            .map((val) => parseInt(val));
+        
+        if (
+            (firstLowerBound <= secondLowerBound &&
+                firstUpperBound >= secondUpperBound) ||
+            (secondLowerBound <= firstLowerBound &&
+                secondUpperBound >= firstUpperBound)
+        ) {
+            totalOverlaps++;
+        }
+    }
+
+    console.log('1.', totalOverlaps);
+}
+
+export function day04_02() {}
diff --git a/mod.ts b/mod.ts
index 3a30e40..7954768 100644
--- a/mod.ts
+++ b/mod.ts
@@ -1,6 +1,7 @@
 import { day01_01, day01_02 } from './day01/mod.ts';
 import { day02_01, day02_02 } from "./day02/mod.ts";
 import { day03_01, day03_02 } from "./day03/mod.ts";
+import { day04_01,day04_02 } from "./day04/mod.ts";
 
 // Day01
 console.log('Day 01:');
@@ -18,4 +19,10 @@ console.log();
 console.log('Day 03:');
 day03_01();
 day03_02();
-console.log();
\ No newline at end of file
+console.log();
+
+// Day04
+console.log('Day 04:');
+day04_01();
+day04_02();
+console.log();