Partial Day 3 code:
Change-Id: Ib68068c1720c7840fd67a517d241c16553b6871e
Reviewed-on: https://git.clicks.codes/c/Coded/AoC2023/+/141
diff --git a/day 3/index.ts b/day 3/index.ts
new file mode 100644
index 0000000..ccd56c7
--- /dev/null
+++ b/day 3/index.ts
@@ -0,0 +1,78 @@
+import { readFileSync } from "fs";
+
+const input = readFileSync('./input.txt').toString().split('\n');
+
+type coord = `${number}:${number}`
+
+const coords: Record<coord, string> = {};
+
+const ignoreCoords: coord[] = []
+
+function formatCoords(x: number, y: number): coord {return `${x}:${y}`}
+
+// INPUT CURRENT COORDS
+function checkNumChar(x: number, y: number, currentNum?: string): undefined | string {
+ if (ignoreCoords.includes(formatCoords(x,y))) return
+ currentNum = currentNum ?? ""
+ const char = input[y][x];
+ if(isNaN(parseInt(char))) return currentNum;
+ ignoreCoords.push(formatCoords(x,y))
+ currentNum += char;
+ return checkNumChar(x+1, y, currentNum);
+}
+
+let i = 0;
+for(const line of input) {
+ let j = 0;
+ for (const char of line) {
+ if (char === ".") {
+ j++;
+ continue;
+ } else if(isNaN(parseInt(char))) {
+ coords[formatCoords(j,i)] = char
+ } else {
+ const num = checkNumChar(j,i);
+ // console.log(num)
+ if(num) coords[formatCoords(j,i)] = num as string
+ }
+ j++;
+ }
+ i++;
+}
+
+// Part 1
+let sum = 0;
+for(const [loc, val] of Object.entries(coords)) {
+ if(isNaN(parseInt(val))) continue;
+
+ // Parse Coords
+ const [x,y] = loc.match(/\d+/g)!.map(s => parseInt(s)) as [number, number]
+
+ // Check Next Door
+ const lx = x-1;
+ const rx = x + 1 + val.length;
+
+ if(
+ coords[formatCoords(lx,y)] ||
+ coords[formatCoords(rx,y)]
+ ) {
+ sum += parseInt(val);
+ continue;
+ }
+
+ // Check Above / Below w/ diagonals
+ const ay = y - 1;
+ const by = y + 1;
+
+ for(let i = -1; i <= val.length; i++) {
+ if(
+ coords[formatCoords(x+i, ay)] ||
+ coords[formatCoords(x+i, by)]
+ ) {
+ sum += parseInt(val)
+ break;
+ }
+ }
+}
+
+console.log(sum);
diff --git a/day 3/input.txt b/day 3/input.txt
new file mode 100644
index 0000000..9a6ea53
--- /dev/null
+++ b/day 3/input.txt
@@ -0,0 +1,140 @@
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