Add code for 2015 advent that I did historically.

day_2/part_1.ts

@@ -0,0 +1,21 @@
+// @ts-ignore
+import { readFileSync } from "fs";
+
+
+let data: string = readFileSync("input", "utf-8");
+
+let surface_area_sum: number = 0;
+
+for (var dimensions of data.split("\n")) {
+	let dimension_array: string[] = dimensions.split("x");
+
+	let l: number = parseInt(dimension_array[0]),
+		w: number = parseInt(dimension_array[1]),
+		h: number = parseInt(dimension_array[2]);
+
+	let surface_area: number = (2*l*w + 2*l*h + 2*h*w + Math.min(l*w, l*h, h*w));
+
+	surface_area_sum = surface_area_sum + surface_area;
+};
+
+console.log(`Total Surface Area Needed Of Wrapping Paper: ${surface_area_sum}`);