clean code fixes

lib/statistics/Zscore.cs

@@ -9,7 +9,8 @@ namespace QuanTAlib;
 /// the most recent value in a given period. It uses a circular buffer to
 /// efficiently manage the data points within the specified period.
 /// </remarks>
-public class Zscore : AbstractBase {
+public class Zscore : AbstractBase
+{
     private readonly int Period;
     private readonly CircularBuffer _buffer;
 
@@ -20,8 +21,10 @@ public class Zscore : AbstractBase {
     /// <exception cref="ArgumentOutOfRangeException">
     /// Thrown when period is less than 2.
     /// </exception>
-    public Zscore(int period) : base() {
-        if (period < 2) {
+    public Zscore(int period)
+    {
+        if (period < 2)
+        {
             throw new ArgumentOutOfRangeException(nameof(period), "Period must be greater than or equal to 2 for Z-score calculation.");
         }
         Period = period;
@@ -36,7 +39,8 @@ public class Zscore : AbstractBase {
     /// </summary>
     /// <param name="source">The source object to subscribe to for value updates.</param>
     /// <param name="period">The period over which to calculate the Z-score.</param>
-    public Zscore(object source, int period) : this(period) {
+    public Zscore(object source, int period) : this(period)
+    {
         var pubEvent = source.GetType().GetEvent("Pub");
         pubEvent?.AddEventHandler(source, new ValueSignal(Sub));
     }
@@ -44,7 +48,8 @@ public class Zscore : AbstractBase {
     /// <summary>
     /// Initializes the Zscore instance by clearing the buffer.
     /// </summary>
-    public override void Init() {
+    public override void Init()
+    {
         base.Init();
         _buffer.Clear();
     }
@@ -53,8 +58,10 @@ public class Zscore : AbstractBase {
     /// Manages the state of the Zscore instance based on whether a new value is being processed.
     /// </summary>
     /// <param name="isNew">Indicates whether the current input is a new value.</param>
-    protected override void ManageState(bool isNew) {
-        if (isNew) {
+    protected override void ManageState(bool isNew)
+    {
+        if (isNew)
+        {
             _lastValidValue = Input.Value;
             _index++;
         }
@@ -72,13 +79,15 @@ public class Zscore : AbstractBase {
     /// where x is the input value, μ is the mean of the period, and σ is the sample standard deviation.
     /// If there are fewer than 2 data points or if the standard deviation is 0, the method returns 0.
     /// </remarks>
-    protected override double Calculation() {
+    protected override double Calculation()
+    {
         ManageState(Input.IsNew);
 
         _buffer.Add(Input.Value, Input.IsNew);
 
         double zScore = 0;
-        if (_buffer.Count >= 2) {  // We need at least 2 data points for Z-score
+        if (_buffer.Count >= 2)
+        {  // We need at least 2 data points for Z-score
             var values = _buffer.GetSpan().ToArray();
             double mean = values.Average();
             double n = values.Length;
@@ -86,7 +95,8 @@ public class Zscore : AbstractBase {
             double sumSquaredDeviations = values.Sum(x => Math.Pow(x - mean, 2));
             double standardDeviation = Math.Sqrt(sumSquaredDeviations / (n - 1));  // Sample standard deviation
 
-            if (standardDeviation != 0) {  // Avoid division by zero
+            if (standardDeviation != 0)
+            {  // Avoid division by zero
                 zScore = (Input.Value - mean) / standardDeviation;
             }
         }