From bdd2ae17f04a2f6ae26b9b8d69699a81b50da249 Mon Sep 17 00:00:00 2001
From: xzero <andrejmezler@yahoo.de>
Date: Sun, 31 Oct 2021 21:41:23 +0100
Subject: [PATCH 1/2] Add BreadthFirstSearch

Add simple BreadthFirstSearch
---
 Searches/BreadthFirstSearch.java | 97 ++++++++++++++++++++++++++++++++
 1 file changed, 97 insertions(+)
 create mode 100644 Searches/BreadthFirstSearch.java

diff --git a/Searches/BreadthFirstSearch.java b/Searches/BreadthFirstSearch.java
new file mode 100644
index 000000000000..8403b5b0b2f2
--- /dev/null
+++ b/Searches/BreadthFirstSearch.java
@@ -0,0 +1,97 @@
+package Searches;
+
+import java.util.*;
+
+/**
+ * @author:  caos321
+ * @date:    31 October 2021 (Sunday)
+ */
+public class BreadthFirstSearch {
+    static class Node {
+        private final String name;
+        private final List<Node> subNodes;
+
+        public Node(final String name) {
+            this.name = name;
+            this.subNodes = new ArrayList<>();
+        }
+
+        public Node(final String name, final List<Node> subNodes) {
+            this.name = name;
+            this.subNodes = subNodes;
+        }
+
+        public String getName() {
+            return name;
+        }
+
+        public List<Node> getSubNodes() {
+            return subNodes;
+        }
+    }
+
+    public static Optional<Node> search(final Node node, final String name) {
+        if (node.getName().equals(name)) {
+            return Optional.of(node);
+        }
+
+        List<Node> queue = new ArrayList<>(node.getSubNodes());
+
+        while(!queue.isEmpty()) {
+            final Node current = queue.get(0);
+
+            if(current.getName().equals(name)) {
+                return Optional.of(current);
+            }
+
+            queue.addAll(current.getSubNodes());
+
+            queue.remove(0);
+        }
+
+        return Optional.empty();
+    }
+
+    public static void assertThat(final Object actual, final Object expected) {
+        if (!Objects.equals(actual, expected)) {
+            throw new AssertionError(String.format("expected=%s but was actual=%s", expected, actual));
+        }
+    }
+
+    public static void main(final String[] args) {
+        final Node rootNode = new Node("A", List.of(
+                new Node("B", List.of(new Node("D"), new Node("F", List.of(
+                        new Node("H"), new Node("I")
+                )))),
+                new Node("C", List.of(new Node("G"))),
+                new Node("E")
+        ));
+
+        {
+            final String expected = "I";
+
+            final Node result = search(rootNode, expected)
+                    .orElseThrow(() -> new AssertionError("Node not found!"));
+
+            assertThat(result.getName(), expected);
+        }
+
+        {
+            final String expected = "G";
+
+            final Node result = search(rootNode, expected)
+                    .orElseThrow(() -> new AssertionError("Node not found!"));
+
+            assertThat(result.getName(), expected);
+        }
+
+        {
+            final String expected = "E";
+
+            final Node result = search(rootNode, expected)
+                    .orElseThrow(() -> new AssertionError("Node not found!"));
+
+            assertThat(result.getName(), expected);
+        }
+    }
+}

From 9049124991f59921a529bbf30913d5933fb686b6 Mon Sep 17 00:00:00 2001
From: xzero <andrejmezler@yahoo.de>
Date: Sat, 6 Nov 2021 14:39:02 +0100
Subject: [PATCH 2/2] Add importing of Node class from DepthFirstSearch

---
 Searches/BreadthFirstSearch.java | 29 ++++++-----------------------
 1 file changed, 6 insertions(+), 23 deletions(-)

diff --git a/Searches/BreadthFirstSearch.java b/Searches/BreadthFirstSearch.java
index 8403b5b0b2f2..c0abf82ba4fa 100644
--- a/Searches/BreadthFirstSearch.java
+++ b/Searches/BreadthFirstSearch.java
@@ -1,34 +1,17 @@
 package Searches;
 
-import java.util.*;
+import Searches.DepthFirstSearch.Node;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Objects;
+import java.util.Optional;
 
 /**
  * @author:  caos321
  * @date:    31 October 2021 (Sunday)
  */
 public class BreadthFirstSearch {
-    static class Node {
-        private final String name;
-        private final List<Node> subNodes;
-
-        public Node(final String name) {
-            this.name = name;
-            this.subNodes = new ArrayList<>();
-        }
-
-        public Node(final String name, final List<Node> subNodes) {
-            this.name = name;
-            this.subNodes = subNodes;
-        }
-
-        public String getName() {
-            return name;
-        }
-
-        public List<Node> getSubNodes() {
-            return subNodes;
-        }
-    }
 
     public static Optional<Node> search(final Node node, final String name) {
         if (node.getName().equals(name)) {