Lary day5 print method

AAD.Tests/SetTests.cs

@@ -0,0 +1,52 @@
+namespace AAD.Tests;
+
+public class SetTests
+{
+    [Fact]
+    public void Add()
+    {
+        var s = new Set();
+        s.Add(10);
+        s.Add(5);
+        s.Add(20);
+        s.Add(4);
+
+        Assert.Equal(new[] { 4, 5, 10, 20}, 
+            s.ToArray());
+    }
+
+    [Fact]
+    public void Add_Duplicated()
+    {
+        var s = new Set();
+        s.Add(10);
+        s.Add(10);
+        s.Add(20);
+        s.Add(20);
+
+        Assert.Equal(new[] { 10, 20 }, 
+            s.ToArray());
+    }
+
+    [Fact]
+    public void Contains()
+    {
+        var s = new Set();
+        s.Add(5);
+        s.Add(8);
+        s.Add(3);
+
+        Assert.True(s.Contains(8));
+    }
+
+    [Fact]
+    public void Contains_NotFound()
+    {
+        var s = new Set();
+        s.Add(5);
+        s.Add(8);
+        s.Add(3);
+
+        Assert.False(s.Contains(10));
+    }
+}

AAD.Tests/TreeNodeTests.cs

@@ -164,6 +164,47 @@ public void TraverseLevelOrder()
 
         Assert.Equal(expected, result.ToArray());
     }
+
+    [Fact]
+    public void Print_OneNode()
+    {
+        var a = new TreeNode<string>("A");
+
+        Assert.Equal("A", a.Print());
+    }
+
+    [Fact]
+    public void Print_NodeWithChildren()
+    {
+        var sm = new TreeNode<string>("Super Market");
+
+        var v = sm.Add("Vegetables");
+        var pc = sm.Add("Personal Care");
+
+        var expected = string.Join('\n',
+            "Super Market",
+            "|_Vegetables",
+            "|_Personal Care");
+
+        Assert.Equal(expected, sm.Print());
+    }
+
+    [Fact]
+    public void Print_Level2Tree()
+    {
+        var sm = BuildSuperMarketNode();
+
+        var expected = string.Join('\n',
+            "Super Market",
+            "|_Vegetables",
+            "|__Tomato",
+            "|__Lettuce",
+            "|_Personal Care",
+            "|__Shampoo",
+            "|__Tooth Paste");
+
+        Assert.Equal(expected, sm.Print());
+    }
 
     private static TreeNode<string> BuildSuperMarketNode()
     {

AAD/Set.cs

@@ -0,0 +1,19 @@
+namespace AAD;
+
+public class Set
+{
+    public void Add(int value)
+    {
+        throw new NotImplementedException();
+    }
+
+    public int[] ToArray()
+    {
+        throw new NotImplementedException();
+    }
+
+    public bool Contains(int value)
+    {
+        throw new NotImplementedException();
+    }
+}

AAD/TreeNode.cs

@@ -78,4 +78,26 @@ public void TraverseLevelOrder(Action<TreeNode<T>> action)
         foreach (var node in levels[level])
             action(node);
     }
+
+    public IEnumerable<char> Print()
+    {
+          var result = "";
+        TraversePreOrder(node =>
+        {
+            if (node.Level > 0)
+            {
+                result += "\n|";
+                for (var i = node.Level; i > 0; i--)
+                {
+                    result += "_";
+
+                }
+
+            };
+            result += node.Value;
+
+
+        });
+        return result; 
+    }
 }