diff --git a/DIRECTORY.md b/DIRECTORY.md
index df10ce16c0..315810f062 100644
--- a/DIRECTORY.md
+++ b/DIRECTORY.md
@@ -142,6 +142,7 @@
   * [BinaryExponentiationRecursive](Maths/BinaryExponentiationRecursive.js)
   * [BisectionMethod](Maths/BisectionMethod.js)
   * [CheckKishnamurthyNumber](Maths/CheckKishnamurthyNumber.js)
+  * [CollatzSequence](Maths/CollatzSequence.js)
   * [Coordinate](Maths/Coordinate.js)
   * [CoPrimeCheck](Maths/CoPrimeCheck.js)
   * [DecimalExpansion](Maths/DecimalExpansion.js)
@@ -159,6 +160,7 @@
   * [FigurateNumber](Maths/FigurateNumber.js)
   * [FindHcf](Maths/FindHcf.js)
   * [FindLcm](Maths/FindLcm.js)
+  * [FindMaxRecursion](Maths/FindMaxRecursion.js)
   * [FindMin](Maths/FindMin.js)
   * [FindMinIterator](Maths/FindMinIterator.js)
   * [GetEuclidGCD](Maths/GetEuclidGCD.js)
@@ -166,6 +168,7 @@
   * [IsDivisible](Maths/IsDivisible.js)
   * [IsEven](Maths/IsEven.js)
   * [IsOdd](Maths/IsOdd.js)
+  * [IsPronic](Maths/IsPronic.js)
   * [LeapYear](Maths/LeapYear.js)
   * [LinearSieve](Maths/LinearSieve.js)
   * [LucasSeries](Maths/LucasSeries.js)
@@ -197,6 +200,7 @@
   * [SquareRoot](Maths/SquareRoot.js)
   * [SumOfDigits](Maths/SumOfDigits.js)
   * [SumOfGeometricProgression](Maths/SumOfGeometricProgression.js)
+  * [TwinPrime](Maths/TwinPrime.js)
   * [Volume](Maths/Volume.js)
   * [WhileLoopFactorial](Maths/WhileLoopFactorial.js)
   * [ZellersCongruenceAlgorithm](Maths/ZellersCongruenceAlgorithm.js)
diff --git a/Data-Structures/Linked-List/SinglyLinkedList.js b/Data-Structures/Linked-List/SinglyLinkedList.js
index 378540c2c8..f591be13c9 100644
--- a/Data-Structures/Linked-List/SinglyLinkedList.js
+++ b/Data-Structures/Linked-List/SinglyLinkedList.js
@@ -77,7 +77,6 @@ class LinkedList {
       this.headNode = this.headNode.next
       this.length--
     }
-    console.log(removedNode.data)
     return removedNode?.data
   }
 
diff --git a/Search/JumpSearch.js b/Search/JumpSearch.js
index 02751a0fd9..696e318a01 100644
--- a/Search/JumpSearch.js
+++ b/Search/JumpSearch.js
@@ -29,7 +29,5 @@ const jumpSearch = (arr, value) => {
   }
   return -1
 }
-const arr = [0, 0, 4, 7, 10, 23, 34, 40, 55, 68, 77, 90]
-jumpSearch(arr, 4)
-jumpSearch(arr, 34)
-jumpSearch(arr, 77)
+
+export { jumpSearch }
diff --git a/Search/test/jumpSearch.test.js b/Search/test/jumpSearch.test.js
new file mode 100644
index 0000000000..12cff5aee5
--- /dev/null
+++ b/Search/test/jumpSearch.test.js
@@ -0,0 +1,19 @@
+import { jumpSearch } from '../JumpSearch'
+
+test('jumpSearch([0, 0, 4, 7, 10, 23, 34, 40, 55, 68, 77, 90], 77) => 10', () => {
+  const arr = [0, 0, 4, 7, 10, 23, 34, 40, 55, 68, 77, 90]
+  const res = jumpSearch(arr, 77)
+  expect(res).toEqual(10)
+})
+
+test('jumpSearch([11, 12, 15, 65, 78, 90], 4) => -1', () => {
+  const arr = [11, 12, 15, 65, 78, 90]
+  const res = jumpSearch(arr, 4)
+  expect(res).toEqual(-1)
+})
+
+test('jumpSearch([11, 12, 15, 65, 78, 90], 11) => 0', () => {
+  const arr = [11, 12, 15, 65, 78, 90]
+  const res = jumpSearch(arr, 11)
+  expect(res).toEqual(0)
+})