Added 2018 day 4 to 5

2018/day04.py

@@ -0,0 +1,73 @@
+""" https://adventofcode.com/2018/day/4 """
+
+def readFile():
+    import os.path as p
+    dName = p.dirname(__file__)
+    fName = p.basename(__file__).split(".")[0]
+
+    with open(p.join(dName, "input", f"{fName}.txt"), "r") as f:
+        l = [line[:-1] for line in f.readlines()]
+
+    l.sort()
+    return l
+
+class Guard:
+    def __init__(self, id):
+        self.id = int(id)
+        self.idStr = id
+        self.timeAsleep = 0
+        self.minutes = [0 for min in range(60)]
+
+    def sleep(self, start, end):
+        self.timeAsleep += (end - start)
+        for i in range(start, end):
+            self.minutes[i] += 1
+
+def evaluateLines(vals : list):
+    curID = -1
+    start = -1
+    guards = {}
+    for val in vals:
+        timestamp = val[1:17]
+        event = val[19:]
+
+        if "#" in event:
+            curID = event.split()[1][1:]
+            if curID not in guards:
+                guards[curID] = Guard(curID)
+        elif event == "falls asleep":
+            start = int(timestamp[14:16])
+        else: # event == "wakes up"
+            end = int(timestamp[14:16])
+            guards[curID].sleep(start, end)
+
+    return guards
+
+def part1(guards : dict):
+    maxID = ""
+    maxSleep = 0
+    for guard in guards:
+        if guards[guard].timeAsleep > maxSleep:
+            maxSleep = guards[guard].timeAsleep
+            maxID = guard
+
+    guard = guards[maxID]
+    return guard.id * guard.minutes.index(max(guard.minutes))
+
+def part2(guards : dict):
+    maxID = ""
+    maxAmount = 0
+    for guard in guards:
+        cur = max(guards[guard].minutes)
+        if cur > maxAmount:
+            maxAmount = cur
+            maxID = guard
+    
+    guard = guards[maxID]
+    return guard.id * guard.minutes.index(max(guard.minutes))
+
+if __name__ == "__main__":
+    vals = readFile()
+    guards = evaluateLines(vals)
+    print(f"Part 1: {part1(guards)}")
+    print(f"Part 2: {part2(guards)}")

2018/day05.py

@@ -0,0 +1,32 @@
+""" https://adventofcode.com/2018/day/5 """
+
+def readFile():
+    import os.path as p
+    dName = p.dirname(__file__)
+    fName = p.basename(__file__).split(".")[0]
+
+    with open(p.join(dName, "input", f"{fName}.txt"), "r") as f:
+        return list(f.read())
+
+def part1(vals):
+    i = 0
+    while i < len(vals) - 1:
+        if vals[i].lower() == vals[i+1].lower() and vals[i] != vals[i+1]:
+            vals.pop(i)
+            vals.pop(i)
+            i = max(i - 1, 0)
+        else:
+            i += 1
+    return len(vals)
+
+def part2(vals):
+    l = []
+    for i in range(65, 91):
+        temp = list("".join(vals).replace(chr(i), "").replace(chr(i+32), ""))
+        l.append(part1(temp))
+    return min(l)
+
+if __name__ == "__main__":
+    vals = readFile()
+    print(f"Part 1: {part1(vals)}")
+    print(f"Part 2: {part2(vals)}")