added lab16 ex3

src/lab16_composite/ex3/algorithm/TraversalAlgorithm.java

@@ -0,0 +1,27 @@
+package lab16_composite.ex3.algorithm;
+
+import lab16_composite.ex3.component.Component;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public abstract class TraversalAlgorithm {
+    protected List<Component> successors = new ArrayList<>();
+
+    public Component search(Component root, String target) {
+        successors = new ArrayList<>();
+        successors.add(root);
+        while (true) {
+            if (successors.isEmpty()) {
+                return null;
+            }
+            Component component = successors.removeFirst();
+            if (component.getName().equals(target)) {
+                return component;
+            }
+            addSuccessor(component.getChildren());
+        }
+    }
+
+    protected abstract void addSuccessor(ArrayList<Component> newSuccessors);
+}