sgreen solutions to challenge 337

3 files changed, 122 insertions, 0 deletions

diff --git a/challenge-337/sgreen/python/ch-1.py b/challenge-337/sgreen/python/ch-1.py
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+++ b/challenge-337/sgreen/python/ch-1.py
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+#!/usr/bin/env python3
+
+import sys
+
+
+def smaller_than_current(numbers: list) -> list:
+    """For each number in the list, count how many numbers are smaller than it.
+
+    Args:
+        numbers: List of numbers.
+
+    Returns:
+        A list of counts, where each count corresponds to how many numbers in the
+        input list are smaller than or equal to the number at that index.
+    """
+    solution = []
+
+    for number in numbers:
+        # Count how many numbers are smaller or equal than the current number.
+        # Subtract one to exclude the current number itself.
+        solution.append(sum(1 for n in numbers if n <= number) - 1)
+
+    return solution
+
+
+def main():
+    # Convert input into numbers
+    array = [float(n) for n in sys.argv[1:]]
+    result = smaller_than_current(array)
+    print(result)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/challenge-337/sgreen/python/ch-2.py b/challenge-337/sgreen/python/ch-2.py
new file mode 100755
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+++ b/challenge-337/sgreen/python/ch-2.py
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+#!/usr/bin/env python3
+
+from dataclasses import dataclass
+import sys
+
+
+@dataclass
+class Point:
+    """A point in the matrix."""
+    x: int
+    y: int
+
+    def score(self, row:int, col:int) -> int:
+        """Calculate the score for this point at the given row and column."""
+        if row == self.x and col == self.y:
+            return 2
+        if row == self.x or col == self.y:
+            return 1
+
+        return 0
+
+def odd_matrix(rows:int, cols:int, points_list: list) -> int:
+    """Calculate the number of cells in the matrix with an odd score.
+
+    Args:
+        rows: Number of rows in the matrix.
+        col: Number of columns in the matrix.
+        points_list: List of (x, y) tuples representing points in the matrix.
+
+    Returns:
+        The number of cells in the matrix with an odd score.
+    """
+    # Convert the list of points into Point objects
+    points = [Point(x, y) for x, y in points_list]
+    odd_cells = 0
+
+    for row in range(rows):
+        for col in range(cols):
+            # Calculate the score for this cell
+            score = 0
+            for point in points:
+                score += point.score(row, col)
+
+            # If the score is odd, increment the count of odd cells
+            if score % 2 == 1:
+                odd_cells += 1
+
+    return odd_cells
+
+
+def main():
+    # Convert input into integers
+    array = [int(n) for n in sys.argv[1:]]
+    row = array.pop(0)
+    col = array.pop(0)
+    points = [(array[i], array[i + 1]) for i in range(0, len(array), 2)]
+
+    result = odd_matrix(row, col, points)
+    print(result)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/challenge-337/sgreen/python/test.py b/challenge-337/sgreen/python/test.py
new file mode 100755
index 0000000000..8223307e20
--- /dev/null
+++ b/challenge-337/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.assertEqual(ch_1.smaller_than_current([6, 5, 4, 8]), [2, 1, 0, 3])
+        self.assertEqual(ch_1.smaller_than_current([7, 7, 7, 7]), [3, 3, 3, 3])
+        self.assertEqual(ch_1.smaller_than_current([5, 4, 3, 2, 1]), [4, 3, 2, 1, 0])
+        self.assertEqual(ch_1.smaller_than_current([-1, 0, 3, -2, 1]), [1, 2, 4, 0, 3])
+        self.assertEqual(ch_1.smaller_than_current([0, 1, 1, 2, 0]), [1, 3, 3, 4, 1])
+
+    def test_ch_2(self):
+        self.assertEqual(ch_2.odd_matrix(2, 3, [[0,1],[1,1]]), 6)
+        self.assertEqual(ch_2.odd_matrix(2, 2, [[1,1],[0,0]]), 0)
+        self.assertEqual(ch_2.odd_matrix(3, 3, [[0,0],[1,2],[2,1]]), 0)
+        self.assertEqual(ch_2.odd_matrix(1, 5, [[0,2],[0,4]]), 2)
+        self.assertEqual(ch_2.odd_matrix(4, 2, [[1,0],[3,1],[2,0],[0,1]]), 8)
+
+
+if __name__ == '__main__':
+    unittest.main()