Add 2022 day 2

2022/day_2/demo.txt

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+A Y
+B X
+C Z

2022/day_2/part1.py

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+ahand = ("A", "B", "C")
+bhand = ("X", "Y", "Z")
+win_tbl = (
+	("A", "Y"),
+	("B", "Z"),
+	("C", "X"),
+)
+
+def load(filename):
+	with open(filename) as f:
+		t = 0
+		for l in f:
+			a, b = l.rstrip().split(" ")
+			h = bhand.index(b) + 1
+
+			ai = ahand.index(a)
+			bi = bhand.index(b)
+
+			if ai == bi:
+				t += h + 3
+
+			elif (a, b) in win_tbl:
+				t += h + 6
+
+			else:
+				t += h
+
+		return t
+
+assert load("demo.txt") == 15
+t = load("data.txt")
+print(f"You have {t} points.")
+

2022/day_2/part2.py

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+ahand = ("A", "B", "C")
+bhand = ("X", "Y", "Z")
+win_tbl = {
+	"A": "B",
+	"B": "C",
+	"C": "A",
+}
+
+defeats_tbl = {
+	"A": "C",
+	"B": "A",
+	"C": "B",
+}
+
+
+def load(filename):
+	with open(filename) as f:
+		t = 0
+		for l in f:
+			a, b = l.rstrip().split(" ")
+
+			if b == "X":
+				h = ahand.index(defeats_tbl[a]) + 1
+				t += h
+
+			elif b == "Y":
+				h = ahand.index(a) + 1
+				t += h + 3
+
+			elif b == "Z":
+				h = ahand.index(win_tbl[a]) + 1
+				t += h + 6
+
+		return t
+
+assert load("demo.txt") == 12
+t = load("data.txt")
+print("Total points: ", t)