Advent of Code 2022 Day 3

Part 1.py

input = open("input.txt")
rucksacks = input.readlines()

commonItems = []

def findCommonItem(compartmentA, compartmentB):
	for i in range(0, len(compartmentA)):
		for j in range(0, len(compartmentB)):
			if (compartmentA[i] == compartmentB[j]):
				return compartmentA[i]

for rucksack in rucksacks:
	rucksackSize = int(len(rucksack))
	compartmentSize = int(rucksackSize / 2)
	
	compartmentA = rucksack[0:compartmentSize]
	compartmentB = rucksack[compartmentSize:rucksackSize]
	
	commonItems.append(findCommonItem(compartmentA, compartmentB))
	
priorities = {
	"a": 1,
	"b": 2,
	"c": 3,
	"d": 4,
	"e": 5,
	"f": 6,
	"g": 7,
	"h": 8,
	"i": 9,
	"j": 10,
	"k": 11,
	"l": 12,
	"m": 13,
	"n": 14,
	"o": 15,
	"p": 16,
	"q": 17,
	"r": 18,
	"s": 19,
	"t": 20,
	"u": 21,
	"v": 22,
	"w": 23,
	"x": 24,
	"y": 25,
	"z": 26,
	"A": 27,
	"B": 28, 
	"C": 29,
	"D": 30,
	"E": 31,
	"F": 32,
	"G": 33,
	"H": 34,
	"I": 35,
	"J": 36,
	"K": 37,
	"L": 38,
	"M": 39,
	"N": 40,
	"O": 41,
	"P": 42,
	"Q": 43,
	"R": 44,
	"S": 45,
	"T": 46,
	"U": 47,
	"V": 48,
	"W": 49,
	"X": 50,
	"Y": 51,
	"Z": 52
}

prioritiesSum = 0

for commonItem in commonItems:
	prioritiesSum += priorities[commonItem]

print(prioritiesSum)

Part 2.py

input = open("input.txt")
rucksacks = input.readlines()

groups = []

i = 0
while i < len(rucksacks):
	group = []
	j = 0
	while j < 3:
		group.append(rucksacks[i])
		i += 1
		j += 1
	groups.append(group)

def findCommonItem(groupA, groupB, groupC):
	for i in range(0, len(groupA)):
		for j in range(0, len(groupB)):
			if (groupA[i] == groupB[j]):
				for k in range(0, len(groupC)):
					if groupA[i] == groupC[k]:
						return groupA[i]

badges = []				
for group in groups:
	badges.append(findCommonItem(group[0], group[1], group[2]))

priorities = {
	"a": 1,
	"b": 2,
	"c": 3,
	"d": 4,
	"e": 5,
	"f": 6,
	"g": 7,
	"h": 8,
	"i": 9,
	"j": 10,
	"k": 11,
	"l": 12,
	"m": 13,
	"n": 14,
	"o": 15,
	"p": 16,
	"q": 17,
	"r": 18,
	"s": 19,
	"t": 20,
	"u": 21,
	"v": 22,
	"w": 23,
	"x": 24,
	"y": 25,
	"z": 26,
	"A": 27,
	"B": 28, 
	"C": 29,
	"D": 30,
	"E": 31,
	"F": 32,
	"G": 33,
	"H": 34,
	"I": 35,
	"J": 36,
	"K": 37,
	"L": 38,
	"M": 39,
	"N": 40,
	"O": 41,
	"P": 42,
	"Q": 43,
	"R": 44,
	"S": 45,
	"T": 46,
	"U": 47,
	"V": 48,
	"W": 49,
	"X": 50,
	"Y": 51,
	"Z": 52
}

prioritiesSum = 0

for badge in badges:
	prioritiesSum += priorities[badge]

print(prioritiesSum)