added new exo

Algorithms/IntChainLink.cs

@@ -0,0 +1,29 @@
+namespace Algorithms;
+
+public class IntChainLink
+{
+    private int value;
+    private IntChainLink? lst;
+
+    public IntChainLink(int value)
+    {
+        this.value = value;
+        this.lst = null;
+    }
+
+    public IntChainLink(int value, IntChainLink lst)
+    {
+        this.value = value;
+        this.lst = lst;
+    }
+
+    public int Head()
+    {
+        return value;
+    }
+
+    public IntChainLink Rest()
+    {
+        return lst!;
+    }
+}

Algorithms/Program.cs

@@ -4,12 +4,19 @@ using System;
 
 
 
-class EntryPoint{
+class EntryPoint
+{
 
 
-    public static void Main(String[] args){
-       
+    public static void Main(String[] args)
+    {
 
-        Console.WriteLine(TriangleExercice.BuildTriangle(6) );
+
+        IntChainLink lastLink = new IntChainLink(3);
+        IntChainLink secondLink = new IntChainLink(2, lastLink);
+        IntChainLink firstLink = new IntChainLink(1, secondLink);
+        Console.WriteLine(firstLink.Head()); // 1
+        Console.WriteLine(firstLink.Rest().Head()); // 2
+        Console.WriteLine(firstLink.Rest().Rest().Head()); // 3
     }
 }