comment pass

Assets/Engine/Runtime/Utilities/Backtrack.cs

@@ -2,9 +2,11 @@ using System;
 
 // ReSharper disable ReturnTypeCanBeEnumerable.Global
 // ReSharper disable ParameterTypeCanBeEnumerable.Local
-
 namespace EscapeRoomEngine.Engine.Runtime.Utilities
 {
+    /// <summary>
+    /// The backtrack algorithm can calculate the subset of a set of samples with the sum closest to a target value.
+    /// </summary>
     public struct Backtrack
     {
         private int[] indices;
@@ -95,6 +97,9 @@ namespace EscapeRoomEngine.Engine.Runtime.Utilities
             return Sum(leave) < Sum(pick) ? leave : pick;
         }
 
+        /// <summary>
+        /// Combine the two brute force algorithms to calculate the optimal subset.
+        /// </summary>
         public int[] BruteForce()
         {
             var lower = BruteForceLower();