Added exercices

Algorithms/Point.cs

@@ -0,0 +1,29 @@
+namespace Algorithms;
+using System;
+class Point
+{
+    private double x;
+    private double y;
+
+    public Point(double x, double y)
+    {
+        this.x = x;
+        this.y = y;
+    }
+
+    public double X()
+    {
+        return x;
+    }
+
+    public double Y()
+    {
+        return y;
+    }
+
+    public double Distance()
+    {
+        return Math.Sqrt(X() * X() + Y() * Y());
+    }
+
+}