Added 2019 day 08, modified READMEs

2019/08/code.py

@@ -0,0 +1,42 @@
+""" https://adventofcode.com/2019/day/8 """
+
+def readFile():
+    with open(f"{__file__.rstrip('code.py')}input.txt", "r") as f:
+        return f.read()[:-1]
+
+def getLayers(input, width, height):
+    layers = []
+    for i in range(0, len(input), width*height):
+        layers.append([input[i+width*x:i+width*(x+1)] for x in range(height)])
+    return layers
+
+def getPicture(layers):
+    width, height = len(layers[0][0]), len(layers[0])
+    return "\n".join(["".join([getColor(layers, w, h) for w in range(width)]) for h in range(height)])
+    
+def getColor(layers, w, h):
+    for layer in layers:
+        if layer[h][w] != "2": return layer[h][w]
+    return "2"
+
+def part1(layers):
+    min, minLayer = None, None
+    for layer in layers:
+        cnt = sum([l.count("0") for l in layer])
+        if min is None or cnt < min:
+            min, minLayer = cnt, layer
+    return sum([l.count("1") for l in minLayer]) * sum([l.count("2") for l in minLayer])
+
+def part2(layers):
+    picture = getPicture(layers)
+    return f"\n{picture.replace('0', ' ').replace('1', 'X')}"
+
+def test():
+    assert getLayers("123456789012",3,2) == [["123","456"],["789","012"]]
+    assert getPicture(getLayers("0222112222120000",2,2)) == "01\n10"
+
+if __name__ == "__main__":
+    test()
+    vals = getLayers(readFile(), 25, 6)
+    print(f"Part 1: {part1(vals)}")
+    print(f"Part 2: {part2(vals)}")