started advent of code 2021

.gitignore

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+__pycache__

day1_1.py

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+#!/usr/bin/env python3
+import sys, utils
+
+def find_increasing(l: list):
+    prev = 0
+    count = 0
+    for n in l:
+        if n > prev:
+            count += 1
+        prev = n
+    return count - 1 # because first measurement doesn't count
+
+if __name__ == '__main__':
+    if len(sys.argv) < 2:
+        print("please supply input file")
+        sys.exit()
+    f = utils.File(sys.argv[1])
+    print(find_increasing(f.get_ints()))
+
+

day1_2.py

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+#!/usr/bin/env python3
+import sys, utils
+
+def find_increasing_window(l: list):
+    win = l[:3]  
+    count = 0
+    for n in range(3, len(l)):
+        new_win = [l[n-2], l[n-1], l[n]]
+        if sum(new_win) > sum(win):
+            count += 1
+        win = new_win
+    return count
+
+if __name__ == '__main__':
+    if len(sys.argv) < 2:
+        print("please supply input file")
+        sys.exit()
+    f = utils.File(sys.argv[1])
+    print(find_increasing_window(f.get_ints()))
+
+

utils.py

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+class File(object):
+    def __init__(self, filename):
+        self.filename = filename
+        self.lines = list()
+        self._get_lines()
+
+    def _get_lines(self):
+        with open(self.filename, 'r') as f:
+            for line in f:
+                self.lines.append(line)
+
+    def get_strings(self) -> list:
+        if not self.lines:
+            return []
+        return self.lines[:]
+
+    def get_ints(self) -> list:
+        if not self.lines:
+            return []
+        return [int(n) for n in self.lines]
+
+    def close(self):
+        self.lines = []
+        self.filename = ''
+