Added IterativeDeepening

src/search/iterativedeepening/IterativeDeepening.java

@@ -0,0 +1,45 @@
+package search.iterativedeepening;
+
+import search.Node;
+
+public class IterativeDeepening
+{
+    public <T> Node<T> iterativeDeepening(Node<T> node, Node<T> target)
+    {
+        int lowBarrier = 0;
+
+        Node<T> resultNode;
+
+        do
+        {
+            resultNode = depthFirstSearch(node, target, 0, lowBarrier++);
+        }
+        while (resultNode == null);
+
+        return resultNode;
+    }
+
+    private <T> Node<T> depthFirstSearch(Node<T> node, Node<T> target, int depth, int barrier)
+    {
+        if (node.isTargetReached(target))
+        {
+            return node;
+        }
+
+        var newNodes = node.generateSuccessors();
+
+        while (!newNodes.isEmpty() && depth < barrier)
+        {
+            var resultNode = depthFirstSearch(newNodes.get(0), target, ++depth, barrier);
+
+            if (resultNode != null)
+            {
+                return resultNode;
+            }
+
+            newNodes.remove(0);
+        }
+
+        return null;
+    }
+}