style: enable TypeName (#5214)

* style: enable `TypeName` in checkstyle

* style: enable `TypeName` in checkstyle

* Update directory

* style: use proper formatting

---------

Co-authored-by: StarDxxx <StarDxxx@users.noreply.github.com>
Co-authored-by: Piotr Idzik <65706193+vil02@users.noreply.github.com>

DIRECTORY.md

@@ -18,6 +18,7 @@
             * [ParenthesesGenerator](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/backtracking/ParenthesesGenerator.java)
             * [Permutation](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/backtracking/Permutation.java)
             * [PowerSum](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/backtracking/PowerSum.java)
+            * [SubsequenceFinder](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/backtracking/SubsequenceFinder.java)
             * [WordSearch](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/backtracking/WordSearch.java)
           * bitmanipulation
             * [BitSwap](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/bitmanipulation/BitSwap.java)
@@ -96,7 +97,7 @@
             * dynamicarray
               * [DynamicArray](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/datastructures/dynamicarray/DynamicArray.java)
             * graphs
-              * [A Star](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/datastructures/graphs/A_Star.java)
+              * [AStar](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/datastructures/graphs/AStar.java)
               * [BellmanFord](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/datastructures/graphs/BellmanFord.java)
               * [BipartiteGrapfDFS](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/datastructures/graphs/BipartiteGrapfDFS.java)
               * [BoruvkaAlgorithm](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/datastructures/graphs/BoruvkaAlgorithm.java)
@@ -141,7 +142,7 @@
               * [CreateAndDetectLoop](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/datastructures/lists/CreateAndDetectLoop.java)
               * [CursorLinkedList](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/datastructures/lists/CursorLinkedList.java)
               * [DoublyLinkedList](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/datastructures/lists/DoublyLinkedList.java)
-              * [Merge K SortedLinkedlist](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/datastructures/lists/Merge_K_SortedLinkedlist.java)
+              * [MergeKSortedLinkedlist](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/datastructures/lists/MergeKSortedLinkedlist.java)
               * [MergeSortedArrayList](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/datastructures/lists/MergeSortedArrayList.java)
               * [MergeSortedSinglyLinkedList](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/datastructures/lists/MergeSortedSinglyLinkedList.java)
               * [QuickSortLinkedList](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/datastructures/lists/QuickSortLinkedList.java)
@@ -376,7 +377,7 @@
             * [ColorContrastRatio](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/misc/ColorContrastRatio.java)
             * [InverseOfMatrix](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/misc/InverseOfMatrix.java)
             * [MapReduce](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/misc/MapReduce.java)
-            * [matrixTranspose](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/misc/matrixTranspose.java)
+            * [MatrixTranspose](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/misc/MatrixTranspose.java)
             * [MedianOfMatrix](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/misc/MedianOfMatrix.java)
             * [MedianOfRunningArray](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/misc/MedianOfRunningArray.java)
             * [MedianOfRunningArrayByte](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/misc/MedianOfRunningArrayByte.java)
@@ -403,7 +404,7 @@
               * [HammingDistance](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/others/cn/HammingDistance.java)
             * [Conway](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/others/Conway.java)
             * [CountChar](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/others/CountChar.java)
-            * [countSetBits](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/others/countSetBits.java)
+            * [CountSetBits](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/others/CountSetBits.java)
             * [CountWords](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/others/CountWords.java)
             * [CRC16](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/others/CRC16.java)
             * [CRC32](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/others/CRC32.java)
@@ -478,7 +479,7 @@
             * [RowColumnWiseSorted2dArrayBinarySearch](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/searches/RowColumnWiseSorted2dArrayBinarySearch.java)
             * [SaddlebackSearch](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/searches/SaddlebackSearch.java)
             * [SearchInARowAndColWiseSortedMatrix](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/searches/SearchInARowAndColWiseSortedMatrix.java)
-            * [sortOrderAgnosticBinarySearch](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/searches/sortOrderAgnosticBinarySearch.java)
+            * [SortOrderAgnosticBinarySearch](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/searches/SortOrderAgnosticBinarySearch.java)
             * [SquareRootBinarySearch](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/searches/SquareRootBinarySearch.java)
             * [TernarySearch](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/searches/TernarySearch.java)
             * [UnionFind](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/searches/UnionFind.java)
@@ -549,7 +550,7 @@
             * [HorspoolSearch](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/strings/HorspoolSearch.java)
             * [Isomorphic](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/strings/Isomorphic.java)
             * [LetterCombinationsOfPhoneNumber](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/strings/LetterCombinationsOfPhoneNumber.java)
-            * [longestNonRepeativeSubstring](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/strings/longestNonRepeativeSubstring.java)
+            * [LongestNonRepeativeSubstring](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/strings/LongestNonRepeativeSubstring.java)
             * [LongestPalindromicSubstring](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/strings/LongestPalindromicSubstring.java)
             * [Lower](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/strings/Lower.java)
             * [MyAtoi](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/strings/MyAtoi.java)
@@ -565,7 +566,7 @@
             * [ValidParentheses](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/strings/ValidParentheses.java)
             * [WordLadder](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/strings/WordLadder.java)
             * zigZagPattern
-              * [zigZagPattern](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/strings/zigZagPattern/zigZagPattern.java)
+              * [ZigZagPattern](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/strings/zigZagPattern/ZigZagPattern.java)
   * test
     * java
       * com
@@ -580,6 +581,7 @@
             * [ParenthesesGeneratorTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/backtracking/ParenthesesGeneratorTest.java)
             * [PermutationTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/backtracking/PermutationTest.java)
             * [PowerSumTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/backtracking/PowerSumTest.java)
+            * [SubsequenceFinderTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/backtracking/SubsequenceFinderTest.java)
             * [WordSearchTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/backtracking/WordSearchTest.java)
           * bitmanipulation
             * [BitSwapTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/bitmanipulation/BitSwapTest.java)
@@ -684,7 +686,7 @@
             * [StrassenMatrixMultiplicationTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/divideandconquer/StrassenMatrixMultiplicationTest.java)
           * dynamicprogramming
             * [CatalanNumberTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/dynamicprogramming/CatalanNumberTest.java)
-            * [climbStairsTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/dynamicprogramming/climbStairsTest.java)
+            * [ClimbStairsTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/dynamicprogramming/ClimbStairsTest.java)
             * [EggDroppingTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/dynamicprogramming/EggDroppingTest.java)
             * [KnapsackMemoizationTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/dynamicprogramming/KnapsackMemoizationTest.java)
             * [KnapsackTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/dynamicprogramming/KnapsackTest.java)
@@ -812,7 +814,7 @@
             * [ConwayTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/others/ConwayTest.java)
             * [CountCharTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/others/CountCharTest.java)
             * [CountFriendsPairingTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/others/CountFriendsPairingTest.java)
-            * [countSetBitsTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/others/countSetBitsTest.java)
+            * [CountSetBitsTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/others/CountSetBitsTest.java)
             * [CountWordsTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/others/CountWordsTest.java)
             * [CRC16Test](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/others/CRC16Test.java)
             * [CRCAlgorithmTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/others/CRCAlgorithmTest.java)
@@ -848,7 +850,7 @@
             * [RabinKarpAlgorithmTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/searches/RabinKarpAlgorithmTest.java)
             * [RecursiveBinarySearchTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/searches/RecursiveBinarySearchTest.java)
             * [RowColumnWiseSorted2dArrayBinarySearchTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/searches/RowColumnWiseSorted2dArrayBinarySearchTest.java)
-            * [sortOrderAgnosticBinarySearchTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/searches/sortOrderAgnosticBinarySearchTest.java)
+            * [SortOrderAgnosticBinarySearchTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/searches/SortOrderAgnosticBinarySearchTest.java)
             * [TestSearchInARowAndColWiseSortedMatrix](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/searches/TestSearchInARowAndColWiseSortedMatrix.java)
           * sorts
             * [BeadSortTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/sorts/BeadSortTest.java)
@@ -896,7 +898,7 @@
             * [HorspoolSearchTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/strings/HorspoolSearchTest.java)
             * [IsomorphicTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/strings/IsomorphicTest.java)
             * [LetterCombinationsOfPhoneNumberTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/strings/LetterCombinationsOfPhoneNumberTest.java)
-            * [longestNonRepeativeSubstringTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/strings/longestNonRepeativeSubstringTest.java)
+            * [LongestNonRepeativeSubstringTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/strings/LongestNonRepeativeSubstringTest.java)
             * [LowerTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/strings/LowerTest.java)
             * [MyAtoiTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/strings/MyAtoiTest.java)
             * [PalindromeTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/strings/PalindromeTest.java)
@@ -910,4 +912,4 @@
             * [ValidParenthesesTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/strings/ValidParenthesesTest.java)
             * [WordLadderTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/strings/WordLadderTest.java)
             * zigZagPattern
-              * [zigZagPatternTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/strings/zigZagPattern/zigZagPatternTest.java)
+              * [ZigZagPatternTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/strings/zigZagPattern/ZigZagPatternTest.java)

checkstyle.xml

@@ -116,7 +116,7 @@
     <module name="PackageName"/>
     <module name="ParameterName"/>
     <module name="StaticVariableName"/>
-    <!-- TODO <module name="TypeName"/> -->
+    <module name="TypeName"/>
 
     <!-- Checks for imports                              -->
     <!-- See https://checkstyle.org/checks/imports/index.html -->

pmd-exclude.properties

@@ -10,7 +10,7 @@ com.thealgorithms.conversions.HexToOct=UselessParentheses
 com.thealgorithms.conversions.IntegerToRoman=UnnecessaryFullyQualifiedName
 com.thealgorithms.datastructures.crdt.LWWElementSet=UselessParentheses
 com.thealgorithms.datastructures.crdt.Pair=UnusedPrivateField
-com.thealgorithms.datastructures.graphs.A_Star=UselessParentheses
+com.thealgorithms.datastructures.graphs.AStar=UselessParentheses
 com.thealgorithms.datastructures.graphs.AdjacencyMatrixGraph=CollapsibleIfStatements,UnnecessaryFullyQualifiedName,UselessParentheses
 com.thealgorithms.datastructures.graphs.BipartiteGrapfDFS=CollapsibleIfStatements
 com.thealgorithms.datastructures.graphs.Kruskal=UselessParentheses

src/main/java/com/thealgorithms/datastructures/graphs/AStar.java

@@ -9,8 +9,8 @@ import java.util.Comparator;
 import java.util.List;
 import java.util.PriorityQueue;
 
-public final class A_Star {
+public final class AStar {
-    private A_Star() {
+    private AStar() {
     }
 
     private static class Graph {

src/main/java/com/thealgorithms/datastructures/graphs/DIJSKSTRAS_ALGORITHM.java

@@ -4,7 +4,7 @@ for better understanding
  */
 package com.thealgorithms.datastructures.graphs;
 
-class dijkstras {
+class Dijkstras {
 
     int k = 9;
 
@@ -67,7 +67,7 @@ class dijkstras {
             {8, 11, 0, 0, 0, 0, 1, 0, 7},
             {0, 0, 2, 0, 0, 0, 6, 7, 0},
         };
-        dijkstras t = new dijkstras();
+        Dijkstras t = new Dijkstras();
         t.dijkstra(graph, 0);
     } // main
 } // djikstras

src/main/java/com/thealgorithms/datastructures/lists/MergeKSortedLinkedlist.java

@@ -7,7 +7,7 @@ import java.util.PriorityQueue;
 /**
  * @author Arun Pandey (https://github.com/pandeyarun709)
  */
-public class Merge_K_SortedLinkedlist {
+public class MergeKSortedLinkedlist {
 
     /**
      * This function merge K sorted LinkedList

src/main/java/com/thealgorithms/datastructures/lists/README.md

@@ -27,6 +27,6 @@ The `next` variable points to the next node in the data structure and value stor
 3. `CountSinglyLinkedListRecursion.java`: Recursively counts the size of a list.
 4. `CreateAndDetectLoop.java` : Create and detect a loop in a linked list.
 5. `DoublyLinkedList.java` : A modification of singly linked list which has a `prev` pointer to point to the previous node.
-6. `Merge_K_SortedLinkedlist.java` : Merges K sorted linked list with mergesort (mergesort is also the most efficient sorting algorithm for linked list).
+6. `MergeKSortedLinkedlist.java` : Merges K sorted linked list with mergesort (mergesort is also the most efficient sorting algorithm for linked list).
 7. `RandomNode.java` : Selects a random node from given linked list and diplays it.
 8. `SkipList.java` : Data Structure used for storing a sorted list of elements with help of a Linked list hierarchy that connects to subsequences of elements.

src/main/java/com/thealgorithms/misc/MatrixTranspose.java

@@ -18,8 +18,8 @@ import java.util.Scanner;
  * @version 11.0.9
  * @since 2014-03-31
  */
-public final class matrixTranspose {
+public final class MatrixTranspose {
-    private matrixTranspose() {
+    private MatrixTranspose() {
     }
 
     public static void main(String[] args) {

src/main/java/com/thealgorithms/others/CountSetBits.java

@@ -1,6 +1,6 @@
 package com.thealgorithms.others;
 
-public class countSetBits {
+public class CountSetBits {
 
     /**
      * The below algorithm is called as Brian Kernighan's algorithm
@@ -40,7 +40,7 @@ public class countSetBits {
      * @param num takes Long number whose number of set bit is to be found
      * @return the count of set bits in the binary equivalent
     */
-    public long countsetBits(long num) {
+    public long countSetBits(long num) {
         long cnt = 0;
         while (num > 0) {
             cnt++;

src/main/java/com/thealgorithms/others/RotateMatrixBy90Degrees.java

@@ -6,8 +6,8 @@ package com.thealgorithms.others;
  */
 import java.util.Scanner;
 
-final class Rotate_by_90_degrees {
+final class RotateMatrixBy90Degrees {
-    private Rotate_by_90_degrees() {
+    private RotateMatrixBy90Degrees() {
     }
 
     public static void main(String[] args) {

src/main/java/com/thealgorithms/searches/SortOrderAgnosticBinarySearch.java

@@ -1,6 +1,6 @@
 package com.thealgorithms.searches;
-public final class sortOrderAgnosticBinarySearch {
+public final class SortOrderAgnosticBinarySearch {
-    private sortOrderAgnosticBinarySearch() {
+    private SortOrderAgnosticBinarySearch() {
     }
     public static int find(int[] arr, int key) {
         int start = 0;

src/main/java/com/thealgorithms/strings/LongestNonRepeativeSubstring.java

@@ -2,8 +2,8 @@ package com.thealgorithms.strings;
 
 import java.util.HashMap;
 
-final class longestNonRepeativeSubstring {
+final class LongestNonRepeativeSubstring {
-    private longestNonRepeativeSubstring() {
+    private LongestNonRepeativeSubstring() {
     }
 
     public static int lengthOfLongestSubstring(String s) {

src/main/java/com/thealgorithms/strings/zigZagPattern/ZigZagPattern.java

@@ -1,7 +1,7 @@
 package com.thealgorithms.strings.zigZagPattern;
 
-final class zigZagPattern {
+final class ZigZagPattern {
-    private zigZagPattern() {
+    private ZigZagPattern() {
     }
 
     public static String encode(String s, int numRows) {

src/test/java/com/thealgorithms/dynamicprogramming/ClimbStairsTest.java

@@ -4,7 +4,7 @@ import static org.junit.jupiter.api.Assertions.assertEquals;
 
 import org.junit.jupiter.api.Test;
 
-public class climbStairsTest {
+public class ClimbStairsTest {
 
     @Test
     void climbStairsTestForTwo() {

src/test/java/com/thealgorithms/others/CountSetBitsTest.java

@@ -0,0 +1,17 @@
+package com.thealgorithms.others;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.api.Test;
+
+public class CountSetBitsTest {
+
+    @Test
+    void testSetBits() {
+        CountSetBits csb = new CountSetBits();
+        assertEquals(1L, csb.countSetBits(16));
+        assertEquals(4, csb.countSetBits(15));
+        assertEquals(5, csb.countSetBits(10000));
+        assertEquals(5, csb.countSetBits(31));
+    }
+}

src/test/java/com/thealgorithms/others/countSetBitsTest.java

@@ -1,17 +0,0 @@
-package com.thealgorithms.others;
-
-import static org.junit.jupiter.api.Assertions.assertEquals;
-
-import org.junit.jupiter.api.Test;
-
-public class countSetBitsTest {
-
-    @Test
-    void testSetBits() {
-        countSetBits csb = new countSetBits();
-        assertEquals(1L, csb.countsetBits(16));
-        assertEquals(4, csb.countsetBits(15));
-        assertEquals(5, csb.countsetBits(10000));
-        assertEquals(5, csb.countsetBits(31));
-    }
-}

src/test/java/com/thealgorithms/searches/SortOrderAgnosticBinarySearchTest.java

@@ -4,13 +4,13 @@ import static org.junit.jupiter.api.Assertions.assertEquals;
 
 import org.junit.jupiter.api.Test;
 
-public class sortOrderAgnosticBinarySearchTest {
+public class SortOrderAgnosticBinarySearchTest {
 
     @Test
     public void testAscending() {
         int[] arr = {1, 2, 3, 4, 5}; // for ascending order.
         int target = 2;
-        int ans = sortOrderAgnosticBinarySearch.find(arr, target);
+        int ans = SortOrderAgnosticBinarySearch.find(arr, target);
         int excepted = 1;
         assertEquals(excepted, ans);
     }
@@ -19,7 +19,7 @@ public class sortOrderAgnosticBinarySearchTest {
     public void testDescending() {
         int[] arr = {5, 4, 3, 2, 1}; // for descending order.
         int target = 2;
-        int ans = sortOrderAgnosticBinarySearch.find(arr, target);
+        int ans = SortOrderAgnosticBinarySearch.find(arr, target);
         int excepted = 3;
         assertEquals(excepted, ans);
     }

src/test/java/com/thealgorithms/strings/LongestNonRepeativeSubstringTest.java

@@ -3,13 +3,13 @@ package com.thealgorithms.strings;
 import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 
-public class longestNonRepeativeSubstringTest {
+public class LongestNonRepeativeSubstringTest {
 
     @Test
     public void palindrome() {
         String input1 = "HelloWorld";
         String input2 = "javaIsAProgrammingLanguage";
-        Assertions.assertEquals(longestNonRepeativeSubstring.lengthOfLongestSubstring(input1), 5);
+        Assertions.assertEquals(LongestNonRepeativeSubstring.lengthOfLongestSubstring(input1), 5);
-        Assertions.assertEquals(longestNonRepeativeSubstring.lengthOfLongestSubstring(input2), 9);
+        Assertions.assertEquals(LongestNonRepeativeSubstring.lengthOfLongestSubstring(input2), 9);
     }
 }

src/test/java/com/thealgorithms/strings/zigZagPattern/ZigZagPatternTest.java

@@ -3,13 +3,13 @@ package com.thealgorithms.strings.zigZagPattern;
 import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 
-public class zigZagPatternTest {
+public class ZigZagPatternTest {
 
     @Test
     public void palindrome() {
         String input1 = "HelloWorldFromJava";
         String input2 = "javaIsAProgrammingLanguage";
-        Assertions.assertEquals(zigZagPattern.encode(input1, 4), "HooeWrrmalolFJvlda");
+        Assertions.assertEquals(ZigZagPattern.encode(input1, 4), "HooeWrrmalolFJvlda");
-        Assertions.assertEquals(zigZagPattern.encode(input2, 4), "jAaLgasPrmgaaevIrgmnnuaoig");
+        Assertions.assertEquals(ZigZagPattern.encode(input2, 4), "jAaLgasPrmgaaevIrgmnnuaoig");
     }
 }