sgreen solutions to challenge 348

3 files changed, 100 insertions, 0 deletions

diff --git a/challenge-348/sgreen/python/ch-1.py b/challenge-348/sgreen/python/ch-1.py
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+++ b/challenge-348/sgreen/python/ch-1.py
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+#!/usr/bin/env python3
+
+import sys
+
+
+def count_vowels(s: str) -> int:
+    vowels = 'aeiouAEIOU'
+    return sum(1 for char in s if char in vowels)
+
+def string_alike(input_string: str) -> bool:
+    # Ensure the input string is of even length
+    if len(input_string) % 2 == 1:
+        raise ValueError("Input string must have an even length.")
+
+    if count_vowels(input_string) == 0:
+        return False
+
+    # Split the string into two halves, and count vowels in each half
+    first_half = input_string[:len(input_string)//2]
+    second_half = input_string[len(input_string)//2:]
+    return count_vowels(first_half) == count_vowels(second_half)
+
+def main():
+    result = string_alike(sys.argv[1])
+    print(result)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/challenge-348/sgreen/python/ch-2.py b/challenge-348/sgreen/python/ch-2.py
new file mode 100755
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+++ b/challenge-348/sgreen/python/ch-2.py
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+#!/usr/bin/env python3
+
+import re
+import sys
+
+def time_to_minute(s: str) -> int:
+    if not re.match(r'^\d{1,2}:\d{2}$', s):
+        raise ValueError("Invalid time format, should be HH:MM")
+
+    hour, minute = map(int, s.split(':'))
+
+    if hour < 0 or hour > 23 or minute < 0 or minute > 59:
+        raise ValueError("Invalid time format")
+
+    return hour * 60 + minute
+
+
+def convert_time(source: str, target: str) -> int:
+    # Convert the time to minutes past midnight, and calculate the minutes
+    #  between them
+    duration = time_to_minute(target) - time_to_minute(source)
+    if duration < 0:
+        # Adjust for next day
+        duration += 24 * 60
+
+    # Possible increments in minutes
+    moves = [60, 15, 5, 1]
+    count = 0
+
+    for move in moves:
+        # Use as many of this move as possible
+        count += duration // move
+
+        # The remaining minutes
+        duration %= move
+
+    return count
+
+
+def main():
+    result = convert_time(sys.argv[1], sys.argv[2])
+    print(result)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/challenge-348/sgreen/python/test.py b/challenge-348/sgreen/python/test.py
new file mode 100755
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+++ b/challenge-348/sgreen/python/test.py
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+#!/usr/bin/env python3
+
+import unittest
+ch_1 = __import__('ch-1')
+ch_2 = __import__('ch-2')
+
+
+class TestClass(unittest.TestCase):
+    def test_ch_1(self):
+        self.assertFalse(ch_1.string_alike("textbook"))
+        self.assertTrue(ch_1.string_alike("book"))
+        self.assertTrue(ch_1.string_alike("AbCdEfGh"))
+        self.assertFalse(ch_1.string_alike("rhythmmyth"))
+        self.assertFalse(ch_1.string_alike("UmpireeAudio"))
+
+    def test_ch_2(self):
+        self.assertEqual(ch_2.convert_time("02:30", "02:45"), 1)
+        self.assertEqual(ch_2.convert_time("11:55", "12:15"), 2)
+        self.assertEqual(ch_2.convert_time("09:00", "13:00"), 4)
+        self.assertEqual(ch_2.convert_time("23:45", "00:30"), 3)
+        self.assertEqual(ch_2.convert_time("14:20", "15:25"), 2)
+
+
+if __name__ == '__main__':
+    unittest.main()