Clean up updated code based on codacy feedback

Author: kamikkels

Algorithms/Search/AStar/VecN.cs

@@ -14,7 +14,7 @@ public struct VecN(params double[] vals) : IEquatable<VecN>
     /// <summary>
     ///     Gets the dimension count of this vector.
     /// </summary>
-    public int N => data.Length;
+    public readonly int N => data.Length;
 
     /// <summary>
     ///     Returns the Length squared.
@@ -108,4 +108,29 @@ public bool Equals(VecN other)
 
         return true;
     }
+
+    /// <summary>
+    ///     Determines whether the specified object is equal to the current instance.
+    /// </summary>
+    /// <param name="obj">The object to compare with the current instance. Can be <see langword="null"/>.</param>
+    /// <returns><see langword="true"/> if the specified object is a <c>VecN</c> and is equal to the current instance; otherwise <see langword="false"/>.</returns>
+    public override bool Equals(object? obj)
+    {
+        return obj is VecN other && Equals(other);
+    }
+
+    /// <summary>
+    /// Computes a hash code for the current object based on the values in the <c>data</c> collection.
+    /// </summary>
+    /// <returns>An integer representing the hash code for the current object.</returns>
+    public override int GetHashCode()
+    {
+        var hash = default(HashCode);
+        foreach (var d in data)
+        {
+            hash.Add(d);
+        }
+
+        return hash.ToHashCode();
+    }
 }

DataStructures/LinkedList/SinglyLinkedList/SinglyLinkedListNode.cs

@@ -4,5 +4,5 @@ public class SinglyLinkedListNode<T>(T data)
 {
     public T Data { get; } = data;
 
-    public SinglyLinkedListNode<T>? Next { get; set; } = null;
+    public SinglyLinkedListNode<T>? Next { get; set; }
 }

DataStructures/UnrolledList/UnrolledLinkedListNode.cs

@@ -9,7 +9,7 @@ public class UnrolledLinkedListNode(int nodeSize)
 
     public UnrolledLinkedListNode Next { get; set; } = null!;
 
-    public int Count { get; set; } = 0;
+    public int Count { get; set; }
 
     /// <summary>
     /// Set new item in array buffer.