Added the four first days of 2015

Yes i'm gonna do them all !

Signed-off-by: Avior <github@avior.me>

2015/day-2/part-1.ts

@@ -0,0 +1,17 @@
+import fs from 'fs'
+
+const input: Array<[number, number, number]> = fs.readFileSync(__dirname + '/input.txt').toString()
+	.split('\n')
+	.map((it) => it.split('x').map((v) => parseInt(v)) as [number, number, number])
+
+function calc(item: [number, number, number]) {
+	const l = item[0]
+	const w = item[1]
+	const h = item[2]
+	const smallestSide = Math.min(l*w, w*h, h*l)
+	return 2*l*w + 2*w*h + 2*h*l + smallestSide
+}
+
+console.log(
+	"Result:", input.reduce((p, c) => p + calc(c), 0)
+)

2015/day-2/part-2.ts

@@ -0,0 +1,18 @@
+import fs from 'fs'
+
+const input: Array<[number, number, number]> = fs.readFileSync(__dirname + '/input.txt').toString()
+	.split('\n')
+	.map((it) => it.split('x').map((v) => parseInt(v)) as [number, number, number])
+
+function calc(item: [number, number, number]) {
+	const l = item[0]
+	const w = item[1]
+	const h = item[2]
+	const largest = Math.max(l, w, h)
+	const tmp = l === largest ? w+h : w === largest ? l+h : l+w
+	return tmp + tmp + l*w*h
+}
+
+console.log(
+	"Result:", input.reduce((p, c) => p + calc(c), 0)
+)