Day 4

04/1.py

@@ -0,0 +1,18 @@
+totalPoints = 0
+
+file = open('input.txt', 'r')
+for line in file:
+  parsedLine = line.strip().split(':')[1].split('|')
+  winningNumbers = list(filter(None, parsedLine[0].split(' ')))
+  cardNumbers = list(filter(None, parsedLine[1].split(' ')))
+
+  matchingNumbers = 0
+  for cardNumber in cardNumbers:
+    if cardNumber in winningNumbers:
+      matchingNumbers += 1
+
+  if matchingNumbers > 0:
+    totalPoints += pow(2, matchingNumbers - 1)
+file.close()
+
+print('Total points won', totalPoints)

04/2.py

@@ -0,0 +1,27 @@
+cardList = []
+cardCount = []
+
+file = open('input.txt', 'r')
+for line in file:
+  parsedLine = line.strip().split(':')[1].split('|')
+  winningNumbers = list(filter(None, parsedLine[0].split(' ')))
+  cardNumbers = list(filter(None, parsedLine[1].split(' ')))
+
+  matchingNumbers = 0
+  for cardNumber in cardNumbers:
+    if cardNumber in winningNumbers:
+      matchingNumbers += 1
+
+  cardList.append(matchingNumbers)
+  cardCount.append(1)
+file.close()
+
+for i, cardWinnings in enumerate(cardList):
+  copyCount = cardCount[i]
+
+  j = 0
+  while j < cardWinnings:
+    j += 1
+    cardCount[i + j] += copyCount
+
+print('Total number of cards:', sum(cardCount))