day 1

.gitignore

@@ -0,0 +1 @@
+.DS_Store

1/a.py

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+with open("input.txt") as f:
+    lines = [int(i) for i in f.readlines()]
+
+
+hits = 0
+last = None
+
+for line in lines:
+    if last is not None and line > last:
+        hits += 1
+
+    last = line
+
+
+print(hits)

1/b.py

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+with open("input.txt") as f:
+    lines = [int(i) for i in f.readlines()]
+
+
+hits = 0
+window = lines[0:3]
+
+for line in lines[3:]:
+    oldwindow = list(window)
+    window.pop(0)
+    window.append(line)
+
+    if sum(oldwindow) < sum(window):
+        hits += 1
+
+
+print(hits)
+
+
+# 5m41s

1/b_best.py

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+with open("input.txt") as f:
+    lines = [int(i) for i in f.readlines()]
+
+hits = 0
+winsize = 3
+last = sum([lines[0], lines[1], lines[2]])
+
+for i in range(3, len(lines)):
+    now = last - lines[i - 3] + lines[i]
+    if now > last:
+        hits += 1
+
+print(hits)

1/b_better.py

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+with open("input.txt") as f:
+    lines = [int(i) for i in f.readlines()]
+
+
+hits = 0
+winsize = 3
+last = None
+
+for i in range(0, len(lines) - 2):
+    window = sum([lines[i], lines[i + 1], lines[i + 2]])
+    if last is not None and window > last:
+        hits +=1
+    last = window
+
+print(hits)