#001 初版提交

2025-08-04 13:03:33 +08:00
commit 1857eea8a4
390 changed files with 356175 additions and 0 deletions
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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace NSAnalysis
+{
+    public static class EnumerableExtensions
+    {
+        public static double StandardDeviation(this IEnumerable<double> values)
+        {
+            double avg = values.Average();
+            double sum = values.Sum(d => Math.Pow(d - avg, 2));
+            return Math.Sqrt((sum) / (values.Count() - 1));
+        }
+    }
+}