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Services/ArrayIoService.cs

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+using System.IO;
+
+namespace Lab9.Services;
+
+public static class ArrayIoService
+{
+    private static readonly char[] Separators = [' ', ',', ';', '\n', '\r', '\t'];
+
+    public static int[] ReadArrayFromFile(string filePath)
+    {
+        var content = File.ReadAllText(filePath);
+
+        return content
+            .Split(Separators, StringSplitOptions.RemoveEmptyEntries)
+            .Select(int.Parse)
+            .ToArray();
+    }
+}