diff --git a/.gitignore b/.gitignore
index 86b5e58..96f370d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,5 @@
 .DS_Store
-.idea/shelf
+/.idea/
 /android.tests.dependencies
 /confluence/target
 /dependencies/repo
@@ -29,4 +29,4 @@ node_modules/
 .rpt2_cache/
 libraries/tools/kotlin-test-nodejs-runner/lib/
 .idea/jarRepositories.xml
-.idea/misc.xml
\ No newline at end of file
+.idea/misc.xml
diff --git a/.idea/codeStyles/Project.xml b/.idea/codeStyles/Project.xml
deleted file mode 100644
index 1bec35e..0000000
--- a/.idea/codeStyles/Project.xml
+++ /dev/null
@@ -1,10 +0,0 @@
-<component name="ProjectCodeStyleConfiguration">
-  <code_scheme name="Project" version="173">
-    <JetCodeStyleSettings>
-      <option name="CODE_STYLE_DEFAULTS" value="KOTLIN_OFFICIAL" />
-    </JetCodeStyleSettings>
-    <codeStyleSettings language="kotlin">
-      <option name="CODE_STYLE_DEFAULTS" value="KOTLIN_OFFICIAL" />
-    </codeStyleSettings>
-  </code_scheme>
-</component>
\ No newline at end of file
diff --git a/.idea/codeStyles/codeStyleConfig.xml b/.idea/codeStyles/codeStyleConfig.xml
deleted file mode 100644
index 79ee123..0000000
--- a/.idea/codeStyles/codeStyleConfig.xml
+++ /dev/null
@@ -1,5 +0,0 @@
-<component name="ProjectCodeStyleConfiguration">
-  <state>
-    <option name="USE_PER_PROJECT_SETTINGS" value="true" />
-  </state>
-</component>
\ No newline at end of file
diff --git a/.idea/encodings.xml b/.idea/encodings.xml
deleted file mode 100644
index 15a15b2..0000000
--- a/.idea/encodings.xml
+++ /dev/null
@@ -1,4 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="Encoding" addBOMForNewFiles="with NO BOM" />
-</project>
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
deleted file mode 100644
index 4b49563..0000000
--- a/.idea/misc.xml
+++ /dev/null
@@ -1,7 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ExternalStorageConfigurationManager" enabled="true" />
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_9" project-jdk-name="9" project-jdk-type="JavaSDK">
-    <output url="file://$PROJECT_DIR$/out" />
-  </component>
-</project>
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
deleted file mode 100644
index 94a25f7..0000000
--- a/.idea/vcs.xml
+++ /dev/null
@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="VcsDirectoryMappings">
-    <mapping directory="$PROJECT_DIR$" vcs="Git" />
-  </component>
-</project>
\ No newline at end of file
diff --git a/src/main/kotlin/dynamicProgramming/Factorial.kt b/src/main/kotlin/dynamicProgramming/Factorial.kt
index 0eec314..38d9734 100644
--- a/src/main/kotlin/dynamicProgramming/Factorial.kt
+++ b/src/main/kotlin/dynamicProgramming/Factorial.kt
@@ -1,5 +1,11 @@
 package dynamicProgramming
 
+/**
+ * This is a tail-recursive implementation of factorial calculation.
+ * @param n - the number to calculate factorial for
+ * @param accumulator - accumulates the factorial value (default is 1)
+ * @return factorial of the input number
+ */
 tailrec fun factorial(n: Int, accumulator: Int = 1): Int {
     if (n == 0) {
         return accumulator
diff --git a/src/main/kotlin/dynamic_programming/PalindromePartitioning.kt b/src/main/kotlin/dynamicProgramming/PalindromePartitioning.kt
similarity index 100%
rename from src/main/kotlin/dynamic_programming/PalindromePartitioning.kt
rename to src/main/kotlin/dynamicProgramming/PalindromePartitioning.kt
diff --git a/src/main/kotlin/dynamicProgramming/isPrime.kt b/src/main/kotlin/dynamicProgramming/isPrime.kt
index 7959c15..36a2500 100644
--- a/src/main/kotlin/dynamicProgramming/isPrime.kt
+++ b/src/main/kotlin/dynamicProgramming/isPrime.kt
@@ -1,3 +1,8 @@
 package dynamicProgramming
 
-fun Int.isPrime() = this > 1 && (2..(this / 2)).all { this % it != 0 }
\ No newline at end of file
+/**
+ * Extension function that checks if an integer is a prime number.
+ * A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself.
+ * @return true if the number is prime, false otherwise
+ */
+fun Int.isPrime() = this > 1 && (2..(this / 2)).all { this % it != 0 }
diff --git a/src/main/kotlin/other/Palindrome.kt b/src/main/kotlin/other/Palindrome.kt
deleted file mode 100644
index 4a2dc13..0000000
--- a/src/main/kotlin/other/Palindrome.kt
+++ /dev/null
@@ -1,36 +0,0 @@
-package other
-
-import java.text.Normalizer
-import java.util.regex.Pattern
-
-/**
- * A palindrome is a word, number, phrase, or other sequence
- * of characters which reads the same backward as forward,
- * such as madam, racecar. There are also numeric palindromes,
- * particularly date/time stamps using short digits 11/11/11 11:11
- * and long digits 02/02/2020
- *
- * This function
- * @param text The text to be checked if it is a palindrome
- * @return return true if the text is a Palindrome
- */
-fun isPalindrome(text: String): Boolean {
-
-    val normalizedText = text.normalize()
-    for(i in normalizedText.indices)
-        if(normalizedText[i] != normalizedText[normalizedText.length - (i + 1)])
-            return false
-    return true;
-}
-
-
-fun String.normalize(): String {
-    val nfdNormalizedString = Normalizer.normalize(this, Normalizer.Form.NFD)
-    return Pattern
-        .compile("\\p{InCombiningDiacriticalMarks}+")
-        .matcher(nfdNormalizedString)
-        .replaceAll("")
-        .toLowerCase()
-        .replace(" ", "")
-
-}
\ No newline at end of file