Simplify Train (C#) folder structure

2025-12-23 07:29:02 -08:00 · 2022-01-17 08:44:09 +02:00
parent 79c04373f4
commit 9deb45db96
5 changed files with 7 additions and 7 deletions
--- a/91_Train/csharp/Train/TrainGame.cs
+++ b/91_Train/csharp/Train/TrainGame.cs
@@ -0,0 +1,93 @@
+using System;
+using System.Linq;
+
+namespace Train
+{
+    public class TrainGame
+    {
+        private Random Rnd { get; } = new Random();
+        private readonly int ALLOWED_PERCENTAGE_DIFFERENCE = 5;
+
+        static void Main()
+        {
+            TrainGame train = new TrainGame();
+            train.GameLoop();
+        }
+
+        public void GameLoop()
+        {
+            DisplayIntroText();
+
+            do
+            {
+                PlayGame();
+            } while (TryAgain());
+        }
+
+        private void PlayGame()
+        {
+            int carSpeed = (int)GenerateRandomNumber(40, 25);
+            int timeDifference = (int)GenerateRandomNumber(5, 15);
+            int trainSpeed = (int)GenerateRandomNumber(20, 19);
+
+            Console.WriteLine($"A CAR TRAVELING {carSpeed} MPH CAN MAKE A CERTAIN TRIP IN");
+            Console.WriteLine($"{timeDifference} HOURS LESS THAN A TRAIN TRAVELING AT {trainSpeed} MPH");
+            Console.WriteLine("HOW LONG DOES THE TRIP TAKE BY CAR?");
+
+            double userInputCarJourneyDuration = double.Parse(Console.ReadLine());
+            double actualCarJourneyDuration = CalculateCarJourneyDuration(carSpeed, timeDifference, trainSpeed);
+            int percentageDifference = CalculatePercentageDifference(userInputCarJourneyDuration, actualCarJourneyDuration);
+
+            if (IsWithinAllowedDifference(percentageDifference, ALLOWED_PERCENTAGE_DIFFERENCE))
+            {
+                Console.WriteLine($"GOOD! ANSWER WITHIN {percentageDifference} PERCENT.");
+            }
+            else
+            {
+                Console.WriteLine($"SORRY.  YOU WERE OFF BY {percentageDifference} PERCENT.");
+            }
+            Console.WriteLine($"CORRECT ANSWER IS {actualCarJourneyDuration} HOURS.");
+        }
+
+        public static bool IsWithinAllowedDifference(int percentageDifference, int allowedDifference)
+        {
+            return percentageDifference <= allowedDifference;
+        }
+
+        private static int CalculatePercentageDifference(double userInputCarJourneyDuration, double carJourneyDuration)
+        {
+            return (int)(Math.Abs((carJourneyDuration - userInputCarJourneyDuration) * 100 / userInputCarJourneyDuration) + .5);
+        }
+
+        public static double CalculateCarJourneyDuration(double carSpeed, double timeDifference, double trainSpeed)
+        {
+            return timeDifference * trainSpeed / (carSpeed - trainSpeed);
+        }
+
+        public double GenerateRandomNumber(int baseSpeed, int multiplier)
+        {
+            return multiplier * Rnd.NextDouble() + baseSpeed;
+        }
+
+        private bool TryAgain()
+        {
+            Console.WriteLine("ANOTHER PROBLEM (YES OR NO)? ");
+            return IsInputYes(Console.ReadLine());
+        }
+
+        public static bool IsInputYes(string consoleInput)
+        {
+            var options = new string[] { "Y", "YES" };
+            return options.Any(o => o.Equals(consoleInput, StringComparison.CurrentCultureIgnoreCase));
+        }
+
+        private void DisplayIntroText()
+        {
+            Console.WriteLine("TRAIN");
+            Console.WriteLine("CREATIVE COMPUTING  MORRISTOWN, NEW JERSEY");
+            Console.WriteLine();
+            Console.WriteLine("TIME - SPEED DISTANCE EXERCISE");
+            Console.WriteLine();
+        }
+    }
+}