3 files changed, 78 insertions, 0 deletions
diff --git a/challenge-326/sgreen/python/ch-1.py b/challenge-326/sgreen/python/ch-1.py
new file mode 100755
index 0000000000..c05a79a942
--- /dev/null
+++ b/challenge-326/sgreen/python/ch-1.py
@@ -0,0 +1,29 @@
+#!/usr/bin/env python3
+
+from datetime import date
+import re
+import sys
+
+
+def day_of_year(input_date: str) -> int:
+    """
+    Calculate the day of the year from a date string in 'YYYY-MM-DD' format.
+    :param input_date: Date string in 'YYYY-MM-DD' format
+    :return: Day of the year as an integer
+    """
+
+    # Validate the input date format
+    if not re.match(r'^\d{4}-\d\d?-\d\d?$', input_date):
+        raise ValueError("Input date must be in 'YYYY-MM-DD' format")
+
+    year, month, day = map(int, input_date.split('-'))
+    return int((date(year, month, day).strftime('%j')))
+
+
+def main():
+    result = day_of_year(sys.argv[1])
+    print(result)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/challenge-326/sgreen/python/ch-2.py b/challenge-326/sgreen/python/ch-2.py
new file mode 100755
index 0000000000..153c368500
--- /dev/null
+++ b/challenge-326/sgreen/python/ch-2.py
@@ -0,0 +1,28 @@
+#!/usr/bin/env python3
+
+import sys
+
+
+def decompressed_list(ints: list) -> list:
+    """
+    Decompress a list of integers where each integer represents the number of times the next integer should be repeated.
+    :param ints: List of integers
+    :return: Decompressed list of integers
+    """
+    result = []
+    for i in range(0, len(ints), 2):
+        count = ints[i]
+        value = ints[i + 1]
+        result.extend([value] * count)
+    return result
+
+
+def main():
+    # Convert input into integers
+    array = [int(n) for n in sys.argv[1:]]
+    result = decompressed_list(array)
+    print(result)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/challenge-326/sgreen/python/test.py b/challenge-326/sgreen/python/test.py
new file mode 100755
index 0000000000..2215ec3e13
--- /dev/null
+++ b/challenge-326/sgreen/python/test.py
@@ -0,0 +1,21 @@
+#!/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.assertEqual(ch_1.day_of_year('2025-02-02'), 33)
+        self.assertEqual(ch_1.day_of_year('2025-04-10'), 100)
+        self.assertEqual(ch_1.day_of_year('2025-09-07'), 250)
+
+    def test_ch_2(self):
+        self.assertEqual(ch_2.decompressed_list([1, 3, 2, 4]), [3, 4, 4])
+        self.assertEqual(ch_2.decompressed_list([1, 1, 2, 2]), [1, 2, 2])
+        self.assertEqual(ch_2.decompressed_list([3, 1, 3, 2]), [1, 1, 1, 2, 2, 2])
+
+
+if __name__ == '__main__':
+    unittest.main()