Data commit

Task/Visualize-a-tree/C-sharp/visualize-a-tree.cs

@@ -0,0 +1,48 @@
+using System;
+
+public static class VisualizeTree
+{
+    public static void Main() {
+        "A".t(
+            "B0".t(
+                "C1",
+                "C2".t(
+                    "D".t("E1", "E2", "E3")),
+                "C3".t(
+                    "F1",
+                    "F2",
+                    "F3".t("G"),
+                    "F4".t("H1", "H2"))),
+            "B1".t(
+                "K1",
+                "K2".t(
+                    "L1".t("M"),
+                    "L2",
+                    "L3"),
+                "K3")
+        ).Print();
+    }
+
+    private static Tree t(this string value, params Tree[] children) => new Tree(value, children);
+
+    private static void Print(this Tree tree) => tree.Print(true, "");
+
+    private static void Print(this Tree tree, bool last, string prefix) {
+        (string current, string next) = last
+            ? (prefix + "└─" + tree.Value, prefix + "  ")
+            : (prefix + "├─" + tree.Value, prefix + "| ");
+        Console.WriteLine(current[2..]);
+        for (int c = 0; c < tree.Children.Length; c++) {
+            tree.Children[c].Print(c == tree.Children.Length - 1, next);
+        }
+    }
+
+    class Tree
+    {
+        public Tree(string value, params Tree[] children) => (Value, Children) = (value, children);
+        public static implicit operator Tree(string value) => new Tree(value);
+        public string Value { get; }
+        public Tree[] Children { get; }
+    }
+
+}