AoC 2015: day5

Signed-off-by: Ettore Dreucci <ettore.dreucci@gmail.com>

2015-python/solutions/day_5.py

@@ -0,0 +1,82 @@
+"""AOC 2015 Day 5"""
+
+import pathlib
+import time
+
+TEST_INPUT = """ugknbfddgicrmopn
+aaa
+jchzalrnumimnmhp
+haegwjzuvuyypxyu
+dvszwmarrgswjxmb"""
+
+TEST_INPUT_2 = """qjhvhtzxzqqjkmpb
+xxyxx
+uurcxstgmygtbstg
+ieodomkazucvgmuy"""
+
+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:
+    entries = list()
+    for line in input_data.split('\n'):
+        entries.append(line)
+    return entries
+
+def part1(entries: list) -> int:
+    """part1 solver"""
+    nice_strings = 0
+    for string in entries:
+        vowels_count = 0
+        doubles = False
+        forbidden = False
+        for index, char in enumerate(string):
+            if char in 'aeiou':
+                vowels_count += 1
+            if not doubles and index < len(string)-1 and char == string[index+1]:
+                doubles = True
+        for forbidden_substring in ('ab', 'cd', 'pq', 'xy'):
+            if forbidden:
+                break
+            if forbidden_substring in string:
+                forbidden = True
+        if vowels_count >= 3 and doubles and not forbidden:
+            nice_strings += 1
+    return nice_strings
+
+def part2(entries: list) -> int:
+    """part2 solver"""
+    nice_strings = 0
+    for string in entries:
+        if any([string.count(string[i:i+2]) >= 2 for i in range(len(string)-2)]) and any([string[i] == string[i+2] for i in range(len(string)-2)]):
+            nice_strings += 1
+    return nice_strings
+
+
+def test_input_day_5():
+    """pytest testing function"""
+    entries = extract(TEST_INPUT)
+    assert part1(entries) == 2
+    entries = extract(TEST_INPUT_2)
+    assert part2(entries) == 2
+
+def test_bench_day_5(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()