diff --git a/algorithms-miscellaneous-1/.gitignore b/algorithms-miscellaneous-1/.gitignore
deleted file mode 100644
index 30b2b7442c..0000000000
--- a/algorithms-miscellaneous-1/.gitignore
+++ /dev/null
@@ -1,4 +0,0 @@
-/target/
-.settings/
-.classpath
-.project
\ No newline at end of file
diff --git a/algorithms-miscellaneous-1/README.md b/algorithms-miscellaneous-1/README.md
index 479c2792f6..57f5a5d478 100644
--- a/algorithms-miscellaneous-1/README.md
+++ b/algorithms-miscellaneous-1/README.md
@@ -1,18 +1,9 @@
 ## Relevant articles:
 
-- [Validating Input With Finite Automata in Java](http://www.baeldung.com/java-finite-automata)
-- [Example of Hill Climbing Algorithm](http://www.baeldung.com/java-hill-climbing-algorithm)
-- [Monte Carlo Tree Search for Tic-Tac-Toe Game](http://www.baeldung.com/java-monte-carlo-tree-search)
-- [Binary Search Algorithm in Java](http://www.baeldung.com/java-binary-search)
-- [Introduction to Minimax Algorithm](http://www.baeldung.com/java-minimax-algorithm)
-- [How to Calculate Levenshtein Distance in Java?](http://www.baeldung.com/java-levenshtein-distance)
-- [How to Find the Kth Largest Element in Java](http://www.baeldung.com/java-kth-largest-element)
-- [Multi-Swarm Optimization Algorithm in Java](http://www.baeldung.com/java-multi-swarm-algorithm)
-- [String Search Algorithms for Large Texts](http://www.baeldung.com/java-full-text-search-algorithms)
-- [Check If a String Contains All The Letters of The Alphabet](https://www.baeldung.com/java-string-contains-all-letters)
-- [Find the Middle Element of a Linked List](http://www.baeldung.com/java-linked-list-middle-element)
-- [Calculate Factorial in Java](https://www.baeldung.com/java-calculate-factorial)
-- [Find Substrings That Are Palindromes in Java](https://www.baeldung.com/java-palindrome-substrings)
-- [Find the Longest Substring without Repeating Characters](https://www.baeldung.com/java-longest-substring-without-repeated-characters)
-- [Permutations of an Array in Java](https://www.baeldung.com/java-array-permutations)
-- [Generate Combinations in Java](https://www.baeldung.com/java-combinations-algorithm)
+- [Validating Input With Finite Automata in Java](https://www.baeldung.com/java-finite-automata)
+- [Example of Hill Climbing Algorithm](https://www.baeldung.com/java-hill-climbing-algorithm)
+- [Monte Carlo Tree Search for Tic-Tac-Toe Game](https://www.baeldung.com/java-monte-carlo-tree-search)
+- [Binary Search Algorithm in Java](https://www.baeldung.com/java-binary-search)
+- [Introduction to Minimax Algorithm](https://www.baeldung.com/java-minimax-algorithm)
+- [How to Calculate Levenshtein Distance in Java?](https://www.baeldung.com/java-levenshtein-distance)
+- [How to Find the Kth Largest Element in Java](https://www.baeldung.com/java-kth-largest-element)
\ No newline at end of file
diff --git a/algorithms-miscellaneous-4/README.md b/algorithms-miscellaneous-4/README.md
new file mode 100644
index 0000000000..fabb4d29b8
--- /dev/null
+++ b/algorithms-miscellaneous-4/README.md
@@ -0,0 +1,9 @@
+## Relevant articles:
+
+- [Multi-Swarm Optimization Algorithm in Java](https://www.baeldung.com/java-multi-swarm-algorithm)
+- [String Search Algorithms for Large Texts](https://www.baeldung.com/java-full-text-search-algorithms)
+- [Check If a String Contains All The Letters of The Alphabet](https://www.baeldung.com/java-string-contains-all-letters)
+- [Find the Middle Element of a Linked List](https://www.baeldung.com/java-linked-list-middle-element)
+- [Find Substrings That Are Palindromes in Java](https://www.baeldung.com/java-palindrome-substrings)
+- [Find the Longest Substring without Repeating Characters](https://www.baeldung.com/java-longest-substring-without-repeated-characters)
+- [Permutations of an Array in Java](https://www.baeldung.com/java-array-permutations)
\ No newline at end of file
diff --git a/algorithms-miscellaneous-4/pom.xml b/algorithms-miscellaneous-4/pom.xml
new file mode 100644
index 0000000000..8fd8f807ba
--- /dev/null
+++ b/algorithms-miscellaneous-4/pom.xml
@@ -0,0 +1,51 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>algorithms-miscellaneous-4</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <name>algorithms-miscellaneous-4</name>
+    
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-modules</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>com.google.guava</groupId>
+            <artifactId>guava</artifactId>
+            <version>${guava.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <version>${lombok.version}</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.assertj</groupId>
+            <artifactId>assertj-core</artifactId>
+            <version>${org.assertj.core.version}</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <pluginManagement>
+            <plugins>
+                <plugin>
+                    <groupId>org.codehaus.mojo</groupId>
+                    <artifactId>exec-maven-plugin</artifactId>
+                    <version>${exec-maven-plugin.version}</version>
+                </plugin>
+            </plugins>
+        </pluginManagement>
+    </build>
+
+    <properties>
+        <org.assertj.core.version>3.9.0</org.assertj.core.version>
+        <guava.version>27.0.1-jre</guava.version>
+    </properties>
+
+</project>
\ No newline at end of file
diff --git a/algorithms-miscellaneous-1/src/main/java/com/baeldung/algorithms/middleelementlookup/MiddleElementLookup.java b/algorithms-miscellaneous-4/src/main/java/com/baeldung/algorithms/middleelementlookup/MiddleElementLookup.java
similarity index 100%
rename from algorithms-miscellaneous-1/src/main/java/com/baeldung/algorithms/middleelementlookup/MiddleElementLookup.java
rename to algorithms-miscellaneous-4/src/main/java/com/baeldung/algorithms/middleelementlookup/MiddleElementLookup.java
diff --git a/algorithms-miscellaneous-1/src/main/java/com/baeldung/algorithms/middleelementlookup/Node.java b/algorithms-miscellaneous-4/src/main/java/com/baeldung/algorithms/middleelementlookup/Node.java
similarity index 100%
rename from algorithms-miscellaneous-1/src/main/java/com/baeldung/algorithms/middleelementlookup/Node.java
rename to algorithms-miscellaneous-4/src/main/java/com/baeldung/algorithms/middleelementlookup/Node.java
diff --git a/algorithms-miscellaneous-1/src/main/java/com/baeldung/algorithms/multiswarm/Constants.java b/algorithms-miscellaneous-4/src/main/java/com/baeldung/algorithms/multiswarm/Constants.java
similarity index 100%
rename from algorithms-miscellaneous-1/src/main/java/com/baeldung/algorithms/multiswarm/Constants.java
rename to algorithms-miscellaneous-4/src/main/java/com/baeldung/algorithms/multiswarm/Constants.java
diff --git a/algorithms-miscellaneous-1/src/main/java/com/baeldung/algorithms/multiswarm/FitnessFunction.java b/algorithms-miscellaneous-4/src/main/java/com/baeldung/algorithms/multiswarm/FitnessFunction.java
similarity index 100%
rename from algorithms-miscellaneous-1/src/main/java/com/baeldung/algorithms/multiswarm/FitnessFunction.java
rename to algorithms-miscellaneous-4/src/main/java/com/baeldung/algorithms/multiswarm/FitnessFunction.java
diff --git a/algorithms-miscellaneous-1/src/main/java/com/baeldung/algorithms/multiswarm/Multiswarm.java b/algorithms-miscellaneous-4/src/main/java/com/baeldung/algorithms/multiswarm/Multiswarm.java
similarity index 100%
rename from algorithms-miscellaneous-1/src/main/java/com/baeldung/algorithms/multiswarm/Multiswarm.java
rename to algorithms-miscellaneous-4/src/main/java/com/baeldung/algorithms/multiswarm/Multiswarm.java
diff --git a/algorithms-miscellaneous-1/src/main/java/com/baeldung/algorithms/multiswarm/Particle.java b/algorithms-miscellaneous-4/src/main/java/com/baeldung/algorithms/multiswarm/Particle.java
similarity index 100%
rename from algorithms-miscellaneous-1/src/main/java/com/baeldung/algorithms/multiswarm/Particle.java
rename to algorithms-miscellaneous-4/src/main/java/com/baeldung/algorithms/multiswarm/Particle.java
diff --git a/algorithms-miscellaneous-1/src/main/java/com/baeldung/algorithms/multiswarm/Swarm.java b/algorithms-miscellaneous-4/src/main/java/com/baeldung/algorithms/multiswarm/Swarm.java
similarity index 100%
rename from algorithms-miscellaneous-1/src/main/java/com/baeldung/algorithms/multiswarm/Swarm.java
rename to algorithms-miscellaneous-4/src/main/java/com/baeldung/algorithms/multiswarm/Swarm.java
diff --git a/algorithms-miscellaneous-1/src/main/java/com/baeldung/algorithms/permutation/Permutation.java b/algorithms-miscellaneous-4/src/main/java/com/baeldung/algorithms/permutation/Permutation.java
similarity index 100%
rename from algorithms-miscellaneous-1/src/main/java/com/baeldung/algorithms/permutation/Permutation.java
rename to algorithms-miscellaneous-4/src/main/java/com/baeldung/algorithms/permutation/Permutation.java
diff --git a/algorithms-miscellaneous-1/src/main/java/com/baeldung/algorithms/string/EnglishAlphabetLetters.java b/algorithms-miscellaneous-4/src/main/java/com/baeldung/algorithms/string/EnglishAlphabetLetters.java
similarity index 100%
rename from algorithms-miscellaneous-1/src/main/java/com/baeldung/algorithms/string/EnglishAlphabetLetters.java
rename to algorithms-miscellaneous-4/src/main/java/com/baeldung/algorithms/string/EnglishAlphabetLetters.java
diff --git a/algorithms-miscellaneous-1/src/main/java/com/baeldung/algorithms/string/LongestSubstringNonRepeatingCharacters.java b/algorithms-miscellaneous-4/src/main/java/com/baeldung/algorithms/string/LongestSubstringNonRepeatingCharacters.java
similarity index 100%
rename from algorithms-miscellaneous-1/src/main/java/com/baeldung/algorithms/string/LongestSubstringNonRepeatingCharacters.java
rename to algorithms-miscellaneous-4/src/main/java/com/baeldung/algorithms/string/LongestSubstringNonRepeatingCharacters.java
diff --git a/algorithms-miscellaneous-1/src/main/java/com/baeldung/algorithms/string/SubstringPalindrome.java b/algorithms-miscellaneous-4/src/main/java/com/baeldung/algorithms/string/SubstringPalindrome.java
similarity index 100%
rename from algorithms-miscellaneous-1/src/main/java/com/baeldung/algorithms/string/SubstringPalindrome.java
rename to algorithms-miscellaneous-4/src/main/java/com/baeldung/algorithms/string/SubstringPalindrome.java
diff --git a/algorithms-miscellaneous-1/src/main/java/com/baeldung/algorithms/string/search/StringSearchAlgorithms.java b/algorithms-miscellaneous-4/src/main/java/com/baeldung/algorithms/string/search/StringSearchAlgorithms.java
similarity index 100%
rename from algorithms-miscellaneous-1/src/main/java/com/baeldung/algorithms/string/search/StringSearchAlgorithms.java
rename to algorithms-miscellaneous-4/src/main/java/com/baeldung/algorithms/string/search/StringSearchAlgorithms.java
diff --git a/algorithms-miscellaneous-4/src/main/resources/logback.xml b/algorithms-miscellaneous-4/src/main/resources/logback.xml
new file mode 100644
index 0000000000..7d900d8ea8
--- /dev/null
+++ b/algorithms-miscellaneous-4/src/main/resources/logback.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
\ No newline at end of file
diff --git a/algorithms-miscellaneous-1/src/test/java/com/baeldung/algorithms/MiddleElementLookupUnitTest.java b/algorithms-miscellaneous-4/src/test/java/com/baeldung/algorithms/MiddleElementLookupUnitTest.java
similarity index 100%
rename from algorithms-miscellaneous-1/src/test/java/com/baeldung/algorithms/MiddleElementLookupUnitTest.java
rename to algorithms-miscellaneous-4/src/test/java/com/baeldung/algorithms/MiddleElementLookupUnitTest.java
diff --git a/algorithms-miscellaneous-1/src/test/java/com/baeldung/algorithms/StringSearchAlgorithmsUnitTest.java b/algorithms-miscellaneous-4/src/test/java/com/baeldung/algorithms/StringSearchAlgorithmsUnitTest.java
similarity index 100%
rename from algorithms-miscellaneous-1/src/test/java/com/baeldung/algorithms/StringSearchAlgorithmsUnitTest.java
rename to algorithms-miscellaneous-4/src/test/java/com/baeldung/algorithms/StringSearchAlgorithmsUnitTest.java
diff --git a/algorithms-miscellaneous-1/src/test/java/com/baeldung/algorithms/multiswarm/LolFitnessFunction.java b/algorithms-miscellaneous-4/src/test/java/com/baeldung/algorithms/multiswarm/LolFitnessFunction.java
similarity index 100%
rename from algorithms-miscellaneous-1/src/test/java/com/baeldung/algorithms/multiswarm/LolFitnessFunction.java
rename to algorithms-miscellaneous-4/src/test/java/com/baeldung/algorithms/multiswarm/LolFitnessFunction.java
diff --git a/algorithms-miscellaneous-1/src/test/java/com/baeldung/algorithms/multiswarm/MultiswarmUnitTest.java b/algorithms-miscellaneous-4/src/test/java/com/baeldung/algorithms/multiswarm/MultiswarmUnitTest.java
similarity index 100%
rename from algorithms-miscellaneous-1/src/test/java/com/baeldung/algorithms/multiswarm/MultiswarmUnitTest.java
rename to algorithms-miscellaneous-4/src/test/java/com/baeldung/algorithms/multiswarm/MultiswarmUnitTest.java
diff --git a/algorithms-miscellaneous-1/src/test/java/com/baeldung/algorithms/string/EnglishAlphabetLettersUnitTest.java b/algorithms-miscellaneous-4/src/test/java/com/baeldung/algorithms/string/EnglishAlphabetLettersUnitTest.java
similarity index 100%
rename from algorithms-miscellaneous-1/src/test/java/com/baeldung/algorithms/string/EnglishAlphabetLettersUnitTest.java
rename to algorithms-miscellaneous-4/src/test/java/com/baeldung/algorithms/string/EnglishAlphabetLettersUnitTest.java
diff --git a/algorithms-miscellaneous-1/src/test/java/com/baeldung/algorithms/string/LongestSubstringNonRepeatingCharactersUnitTest.java b/algorithms-miscellaneous-4/src/test/java/com/baeldung/algorithms/string/LongestSubstringNonRepeatingCharactersUnitTest.java
similarity index 100%
rename from algorithms-miscellaneous-1/src/test/java/com/baeldung/algorithms/string/LongestSubstringNonRepeatingCharactersUnitTest.java
rename to algorithms-miscellaneous-4/src/test/java/com/baeldung/algorithms/string/LongestSubstringNonRepeatingCharactersUnitTest.java
diff --git a/algorithms-miscellaneous-1/src/test/java/com/baeldung/algorithms/string/SubstringPalindromeUnitTest.java b/algorithms-miscellaneous-4/src/test/java/com/baeldung/algorithms/string/SubstringPalindromeUnitTest.java
similarity index 100%
rename from algorithms-miscellaneous-1/src/test/java/com/baeldung/algorithms/string/SubstringPalindromeUnitTest.java
rename to algorithms-miscellaneous-4/src/test/java/com/baeldung/algorithms/string/SubstringPalindromeUnitTest.java
diff --git a/algorithms-miscellaneous-1/src/test/java/com/baeldung/algorithms/support/MayFailRule.java b/algorithms-miscellaneous-4/src/test/java/com/baeldung/algorithms/support/MayFailRule.java
similarity index 100%
rename from algorithms-miscellaneous-1/src/test/java/com/baeldung/algorithms/support/MayFailRule.java
rename to algorithms-miscellaneous-4/src/test/java/com/baeldung/algorithms/support/MayFailRule.java
diff --git a/pom.xml b/pom.xml
index c3f3a62da1..133ab7dfbe 100644
--- a/pom.xml
+++ b/pom.xml
@@ -339,6 +339,7 @@
 				<module>algorithms-miscellaneous-1</module>
 				<module>algorithms-miscellaneous-2</module>
 				<module>algorithms-miscellaneous-3</module>
+				<module>algorithms-miscellaneous-4</module>
 				<module>algorithms-miscellaneous-5</module>
 				<module>algorithms-sorting</module>
 				<module>animal-sniffer-mvn-plugin</module>
@@ -1073,6 +1074,7 @@
 				<module>algorithms-miscellaneous-1</module>
 				<module>algorithms-miscellaneous-2</module>
 				<module>algorithms-miscellaneous-3</module>
+				<module>algorithms-miscellaneous-4</module>
 				<module>algorithms-miscellaneous-5</module>
 				<module>algorithms-sorting</module>
 				<module>animal-sniffer-mvn-plugin</module>