Day 5

day5a.py

@@ -0,0 +1,35 @@
+class SeatPass:
+    def __init__(self, seatcode):
+        self.getrow(seatcode[:7])
+        self.getcol(seatcode[7:])
+        self.getseat()
+    
+    def getrow(self, seatcode):
+        seatcode = seatcode.replace('F', '0')
+        seatcode = seatcode.replace('B', '1')
+        self.row = int(seatcode, 2)
+    
+    def getcol(self, seatcode):
+        seatcode = seatcode.replace('L', '0')
+        seatcode = seatcode.replace('R', '1')
+        self.col = int(seatcode, 2)
+
+    def getseat(self):
+        self.seatnum = (self.row * 8) + self.col
+
+
+def main():
+    with open('input5.txt') as file:
+        lines = file.readlines()
+    lines = [line.strip() for line in lines]
+    passes = []
+    maxseat = -1
+    for line in lines:
+        p = SeatPass(line)
+        passes.append(p)
+        if p.seatnum > maxseat:
+            maxseat = p.seatnum
+    print(f"The largest seat number I've seen is {maxseat}.")
+
+if __name__ == "__main__":
+    main()

day5b.py

@@ -0,0 +1,60 @@
+class SeatPass:
+    def __init__(self, seatcode):
+        self.getrow(seatcode[:7])
+        self.getcol(seatcode[7:])
+        self.getseat()
+    
+    def getrow(self, seatcode):
+        seatcode = seatcode.replace('F', '0')
+        seatcode = seatcode.replace('B', '1')
+        self.row = int(seatcode, 2)
+    
+    def getcol(self, seatcode):
+        seatcode = seatcode.replace('L', '0')
+        seatcode = seatcode.replace('R', '1')
+        self.col = int(seatcode, 2)
+
+    def getseat(self):
+        self.seatnum = (self.row * 8) + self.col
+
+def findOutlier(passes, minrow, maxrow):
+    for i in range(1,len(passes)):
+        p = passes[i]
+        if p.row == minrow or p.row == maxrow:
+            continue
+        if p.seatnum + 1 == passes[i+1].seatnum:
+            continue
+        else:
+            return p
+    return False
+
+def main():
+    with open('input5.txt') as file:
+        lines = file.readlines()
+    lines = [line.strip() for line in lines]
+    passes = []
+    maxseat = -1
+    minrow = 999
+    maxrow = -1
+    for line in lines:
+        p = SeatPass(line)
+        passes.append(p)
+        if p.seatnum > maxseat:
+            maxseat = p.seatnum
+        if p.row > maxrow:
+            maxrow = p.row
+        if p.row < minrow:
+            minrow = p.row
+    passes.sort(key=lambda x: x.seatnum)
+    seats = sorted([p.seatnum for p in passes])
+    print(seats)
+    mypass = findOutlier(passes, minrow, maxrow)
+    if mypass == False:
+        print("I didn't find a pass meeting these criteria.")
+    else:
+        print(mypass.seatnum+1)
+    
+    print(f"The largest seat number I've seen is {maxseat}.")
+
+if __name__ == "__main__":
+    main()