From 6ec60b3bd8210daf9e412dc849c4a9602bb183fe Mon Sep 17 00:00:00 2001
From: Seth <sethsml@hotmail.com>
Date: Tue, 29 Apr 2025 22:34:33 +0000
Subject: [PATCH] part4b complete

---
 4/indexP2.js | 44 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 4/indexP2.js

diff --git a/4/indexP2.js b/4/indexP2.js
new file mode 100644
index 0000000..33f11be
--- /dev/null
+++ b/4/indexP2.js
@@ -0,0 +1,44 @@
+const fs = require("fs");
+const forwardRegex = /XMAS/;
+const backwardRegex = /SAMX/;
+const input = fs.readFileSync("input.txt", "utf-8");
+const inputArr = input.split("\n");
+let totalMatches = 0;
+
+const middleARegex = /.A./
+const MMRegex=/M.M/
+const SSRegex=/S.S/
+const MSRegex=/M.S/
+const SMRegex=/S.M/
+
+
+// console.log(inputArr)
+const maxRows = inputArr.length;
+const maxLetters = inputArr[0].length;
+
+
+for (let x = 0; x+2 < maxRows; x++) {
+  for (let y = 0; y + 2 < maxLetters; y++) {
+    const topLine = inputArr[x][y]+inputArr[x][y+1]+inputArr[x][y+2]
+    const middleLine= inputArr[x+1][y]+inputArr[x+1][y+1]+inputArr[x+1][y+2]
+    const bottomLIne=inputArr[x+2][y]+inputArr[x+2][y+1]+inputArr[x+2][y+2]
+
+    if (topLine.match(MMRegex)&&middleLine.match(middleARegex)&&bottomLIne.match(SSRegex)){
+      totalMatches++
+    }
+
+    if (topLine.match(SSRegex)&&middleLine.match(middleARegex)&&bottomLIne.match(MMRegex)){
+      totalMatches++
+    }
+
+    if (topLine.match(MSRegex)&&middleLine.match(middleARegex)&&bottomLIne.match(MSRegex)){
+      totalMatches++
+    }
+    if (topLine.match(SMRegex)&&middleLine.match(middleARegex)&&bottomLIne.match(SMRegex)){
+      totalMatches++
+    }
+  }
+}
+
+
+console.log("totalMatches: ", totalMatches);