AoC 2021: day 1

2021/solutions/day_01.py

@@ -0,0 +1,72 @@
+"""AOC Day 1"""
+
+import pathlib
+import time
+
+TEST_INPUT = """199
+200
+208
+210
+200
+207
+240
+269
+260
+263"""
+
+def read_input(input_path: str) -> str:
+    """take input file path and return a str with the file's content"""
+    with open(input_path, 'r') as input_file:
+        input_data = input_file.read().strip()
+        return input_data
+
+def extract(input_data: str) -> list:
+    """take input data and return the appropriate data structure"""
+    entries = list()
+    for entry in input_data.split('\n'):
+        entries.append(int(entry))
+    return entries
+
+def part1(entries: list) -> int:
+    """part1 solver take a list of int and return an int"""
+    increment = 0
+    for i in range(len(entries)-1):
+        if entries[i+1] > entries[i]:
+            increment += 1
+    return increment
+    # oneliner not so time efficient
+    # return sum(b > a for a, b in zip(entries, entries[1:]))
+
+def part2(entries: list) -> int:
+    """part2 solver take a list of int and return an int"""
+    increment = 0
+    for i in range(len(entries)-3):
+        if entries[i+3] > entries[i]:
+            increment += 1
+    return increment
+    # oneliner not so time efficient
+    # return sum(b > a for a, b in zip(entries, entries[3:]))
+
+def test_input_day_01():
+    """pytest testing function"""
+    entries = extract(TEST_INPUT)
+    assert part1(entries) == 7
+    assert part2(entries) == 5
+
+def test_bench_day_01(benchmark):
+    """pytest-benchmark function"""
+    benchmark(main)
+
+def main():
+    """main function"""
+    input_path = str(pathlib.Path(__file__).resolve().parent.parent) + "/inputs/" + str(pathlib.Path(__file__).stem)
+    start_time = time.time()
+    input_data = read_input(input_path)
+    entries = extract(input_data)
+    print("Part 1: %d" % part1(entries))
+    print("Part 2: %d" % part2(entries))
+    end_time = time.time()
+    print("Execution time: %f" % (end_time-start_time))
+
+if __name__ == "__main__":
+    main()