feat: Add the four first days of 2023

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

2023/day-1/part-1.ts

@@ -0,0 +1,10 @@
+// note: this runs using bun!
+const file = Bun.file('./input.txt')
+const text = await file.text()
+const res = text.split('\n').filter((it) => !!it).map((it) => {
+	const nums = it.replace(/[a-z]/g, '')
+	const first = nums[0]
+	const last = nums[nums.length - 1]
+	return parseInt(first + last)
+}).reduce((p, c) => p + c, 0)
+console.log(res)

2023/day-1/part-2.ts

@@ -0,0 +1,43 @@
+// note: this runs using bun!
+const file = Bun.file('./input.txt')
+const text = await file.text()
+
+// hack by https://twitter.com/championswimmer/status/1730667285415948767
+const letters = {
+	'one': 'o1ne',
+	'two': 't2wo',
+	'three': 'th3ree',
+	'four': 'fo4ur',
+	'five': 'fi5ve',
+	'six': 's6ix',
+	'seven': 'se7ven',
+	'eight': 'ei8ght',
+	'nine': 'ni9ne'
+} as const
+
+const res = text.split('\n').filter((it) => !!it).map((it) => {
+	let nextNumber = -1
+	let nextLetter: keyof typeof letters | null = null
+	do {
+		nextNumber = -1
+		for (const text in letters) {
+			const idx = it.indexOf(text)
+			if (nextNumber === -1 || (idx > -1 && idx < nextNumber)) {
+				nextNumber = idx
+				nextLetter = text as 'one'
+			}
+		}
+		if (nextNumber > -1 && nextLetter) {
+			it = it.replace(nextLetter, letters[nextLetter])
+		}
+	} while (nextNumber > -1)
+	
+	const nums = it.replace(/[a-z]/g, '')
+	const first = nums[0]
+	const last = nums[nums.length - 1]
+	return parseInt(first + last)
+}).reduce((p, c) => p + c, 0)
+console.log(res)
+
+// too low:
+// too high: 53896