Add project files.

MartianRobotsSolver/MarsSolver.cs

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+using Ardalis.GuardClauses;
+using System.Text;
+
+namespace MartianRobotsSolver
+{
+    public class MarsSolver
+    {
+        public RobotSolution Process(string input)
+        {
+            var lines = input.Split(new string[] { Environment.NewLine, "\n" }, StringSplitOptions.RemoveEmptyEntries).ToList();
+            
+            //extract world info
+            var wInfo = lines[0].Split(" ");
+            var sizeX = Convert.ToInt32(wInfo[0]);
+            var sizeY = Convert.ToInt32(wInfo[1]);
+            var worldInfo = new WorldInfo(sizeX, sizeY);
+            var robotSolution = new RobotSolution()
+            {
+                Input = input,
+                WorldInfo = worldInfo
+            };
+
+            //map robots info and commands
+            for (int i = 0; i < (lines.Count - 1)/2; i++)
+            {
+                var rInfo = lines[1 + i*2].Split(" ");
+                var rPosX = Convert.ToInt32(rInfo[0]);
+                var rPosY = Convert.ToInt32(rInfo[1]);
+                var rHead = rInfo[2];
+
+                var robotCommands = lines[2 + i*2];
+                Guard.Against.InvalidInput(robotCommands, nameof(robotCommands), rc => rc.Length<100);
+                var robotInfo = new RobotInfo(rPosX, rPosY, rHead, robotCommands);
+                robotSolution.Robots.Add(robotInfo);
+            }
+
+            //process commands
+            var navigator = new MarsNavigator(worldInfo);
+            StringBuilder sb = new StringBuilder();
+            foreach (var robotInfo in robotSolution.Robots)
+            {
+                if (sb.Length>0)
+                    sb.Append(Environment.NewLine);
+                sb.Append(navigator.Navigate(robotInfo));
+            }
+
+            //store output
+            robotSolution.Output = sb.ToString();
+
+            return robotSolution;
+        }
+    }
+}