feat(day 189): calculate alpine ski hill rating based on adjusted steepness and hill type

Author: JohnSunny21

FreeCodeCamp/CodingQ/2026WinterGames/Day10AlpineSkling.py

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+"""  
+
+
+2026 Winter Games Day 10: Alpine Skiing
+Given a ski hill's vertical drop, horizontal distance, and type, determine the difficulty rating of the hill.
+
+To determine the rating:
+
+Calculate the steepness of the hill by taking the drop divided by the distance.
+Then, calculate the adjusted steepness based on the hill type:
+"Downhill" multiply steepness by 1.2
+"Slalom": multiply steepness by 0.9
+"Giant Slalom": multiply steepness by 1.0
+Return:
+
+"Green" if the adjusted steepness is less than or equal to 0.1
+"Blue" if the adjusted steepness is greater than 0.1 and less than or equal to 0.25
+"Black" if the adjusted steepness is greater than 0.25
+"""
+
+import unittest
+
+
+class AlpineSkiingTest(unittest.TestCase):
+
+      def test1(self):
+          self.assertEqual(get_hill_rating(620, 2800, "Downhill"), "Black")
+
+      def test2(self):
+          self.assertEqual(get_hill_rating(420, 1680, "Giant Slalom"), "Blue")
+
+      def test3(self):
+          self.assertEqual(get_hill_rating(250, 3000, "Downhill"), "Green")
+
+      def test4(self):
+          self.assertEqual(get_hill_rating(110, 900, "Slalom"), "Blue")
+
+      def test5(self):
+          self.assertEqual(get_hill_rating(380, 1500, "Giant Slalom"), "Black")
+
+      def test6(self):
+          self.assertEqual(get_hill_rating(95, 900, "Slalom"), "Green")
+
+
+def get_hill_rating(drop, distance, type):
+
+    steepness = drop / distance
+
+    if type == "Downhill":
+        adjusted = steepness * 1.2
+    elif type == "Slalom":
+        adjusted = steepness * 0.9
+    elif type == "Giant Slalom":
+        adjusted = steepness * 1.0
+    else:
+        raise ValueError("Invalid hill type")
+    
+
+    if adjusted <= 0.1:
+        return "Green"
+    elif adjusted <= 0.25:
+        return "Blue"
+    else:
+        return "Black"
+    
+
+if __name__ == "__main__":
+    unittest.main()