finished day 23

day23.py

@@ -0,0 +1,133 @@
+#defining a class for the map
+class groveMap():
+    def __init__(self):
+        self.grid = []
+        self.checkOrder = [((-1, -1),(-1, 0),(-1, 1)),((1, -1),(1, 0),(1, 1)),((-1, -1),(0, -1),(1, -1)),((-1, 1),(0, 1),(1, 1))]
+        self.round = 0
+    
+    def addLine(self, line):
+        self.grid.append(list(line))
+
+    def makeMove(self, elve, destination):
+        global lastRound
+        if destination not in self.doubles and elve != destination:
+            self.grid[elve[0]][elve[1]] = '.'
+            self.grid[destination[0]][destination[1]] = '#'
+            lastRound = False
+
+    def changeOrder(self):
+        self.checkOrder.append(self.checkOrder[0])
+        self.checkOrder.pop(0)
+
+    def findElves(self):
+        self.round += 1
+        self.extendGrid()
+        elves = {}
+        self.destList = []
+        for y in range(len(self.grid)):
+            for x in range(len(self.grid[y])):
+                if self.grid[y][x] == '#':
+                    dest = self.goTo(y, x)
+                    elves[(y, x)] = dest
+                    self.destList.append(dest)
+        self.findDoubles()
+        self.changeOrder()
+        return elves
+
+    def findDoubles(self):
+        self.doubles = []
+        for dest in self.destList:
+            if self.destList.count(dest) > 1 and dest not in self.doubles:
+                self.doubles.append(dest)
+
+    def extendGrid(self):
+        self.grid.append(['.' for _ in range(len(self.grid[0]))])
+        self.grid.insert(0, ['.' for _ in range(len(self.grid[-1]))])
+        for i in range(len(self.grid)):
+            self.grid[i].insert(0, '.')
+            self.grid[i].append('.')
+
+    def goTo(self, y, x):
+        count = 0
+        for directions in reversed(self.checkOrder):
+            dir1, dir2, dir3 = directions
+            if self.grid[y + dir1[0]][x + dir1[1]] == '.' and self.grid[y + dir2[0]][x + dir2[1]] == '.' and self.grid[y + dir3[0]][x + dir3[1]] == '.':
+                count += 1
+                destY = y + dir2[0]
+                destX = x + dir2[1]
+        if count in [0, 4]:
+            destY = y
+            destX = x
+        return (destY, destX)
+
+    def cleanup(self):
+        while True:
+            if '#' in self.grid[0]:
+                break
+            self.grid.pop(0)
+        while True:
+            if '#' in self.grid[-1]:
+                break
+            self.grid.pop(-1)
+        done = False
+        while not done:
+            for y in range(len(self.grid)):
+                if self.grid[y][0] == '#':
+                    done = True
+            if done:
+                continue
+            for y in range(len(self.grid)):
+                self.grid[y].pop(0)
+        done = False
+        while not done:
+            for y in range(len(self.grid)):
+                if self.grid[y][-1] == '#':
+                    done = True
+            if done:
+                continue
+            for y in range(len(self.grid)):
+                self.grid[y].pop(-1)
+
+    def countSolution(self):
+        count = 0
+        for line in self.grid:
+            count += line.count('.')
+        return count
+            
+    def testPrint(self):
+        for line in self.grid:
+            for point in line:
+                print(point, end=' ')
+            print('\n')
+
+
+grove = groveMap()
+
+#read input
+with open('input23.txt', 'r') as f:
+    inp = f.read().splitlines(keepends=False)
+
+for line in inp:
+    grove.addLine(line)
+
+lastRound = False
+
+# solves part1, uncomment testprint to display state after 10 rounds
+for _ in range(10):
+    elves = grove.findElves()
+    for elve in elves:
+        grove.makeMove(elve, elves[elve])
+#grove.testPrint()
+grove.cleanup()
+print('Empty tiles after round 10: ', grove.countSolution())
+
+#solve part2
+while not lastRound:
+    lastRound = True
+    elves = grove.findElves()
+    for elve in elves:
+        grove.makeMove(elve, elves[elve])
+    if grove.round % 100 == 0:
+        grove.cleanup()
+    #print(grove.round)
+print('final round: ',grove.round)

in2.txt

@@ -1,14 +1,7 @@
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-        .#......
-        ......#.
-
-10R5L5R10L4R5L5
+....#..
+..###.#
+#...#.#
+.#...##
+#.###..
+##.#.##
+.#..#..

input23.txt

@@ -0,0 +1,71 @@
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