diff --git a/Maths/FindMaxRecursion.js b/Maths/FindMaxRecursion.js
new file mode 100644
index 0000000000..a95eb68406
--- /dev/null
+++ b/Maths/FindMaxRecursion.js
@@ -0,0 +1,38 @@
+/**
+ * @function findMaxRecursion
+ * @description This algorithm will find the maximum value of a array of numbers.
+ *
+ * @param {Integer[]} arr Array of numbers
+ * @param {Integer} left Index of the first element
+ * @param {Integer} right Index of the last element
+ *
+ * @return {Integer} Maximum value of the array
+ *
+ * @see [Maximum value](https://en.wikipedia.org/wiki/Maximum_value)
+ *
+ * @example findMaxRecursion([1, 2, 4, 5]) = 5
+ * @example findMaxRecursion([10, 40, 100, 20]) = 100
+ * @example findMaxRecursion([-1, -2, -4, -5]) = -1
+ */
+function findMaxRecursion(arr, left, right) {
+ const len = arr.length
+
+ if (len === 0 || !arr) return undefined
+
+ if (left>= len &#124;&#124; left < -len &#124;&#124; right>= len &#124;&#124; right < -len) + throw new Error('Index out of range') + + if (left === right) return arr[left] + + // left + right shifted is the middle index + const mid = (left + right)>> 1
+
+ // Find the maximum of left and right
+ const leftMax = findMaxRecursion(arr, left, mid)
+ const rightMax = findMaxRecursion(arr, mid + 1, right)
+
+ // Return the maximum
+ return Math.max(leftMax, rightMax)
+}
+
+export { findMaxRecursion }
diff --git a/Maths/test/FindMaxRecursion.test.js b/Maths/test/FindMaxRecursion.test.js
new file mode 100644
index 0000000000..4772eeb1d3
--- /dev/null
+++ b/Maths/test/FindMaxRecursion.test.js
@@ -0,0 +1,58 @@
+import { findMaxRecursion } from '../FindMaxRecursion'
+
+describe('Test findMaxRecursion function', () => {
+ const positiveAndNegativeArray = [1, 2, 4, 5, -1, -2, -4, -5]
+ const positiveAndNegativeArray1 = [10, 40, 100, 20, -10, -40, -100, -20]
+
+ const positiveArray = [1, 2, 4, 5]
+ const positiveArray1 = [10, 40, 100, 20]
+
+ const negativeArray = [-1, -2, -4, -5]
+ const negativeArray1 = [-10, -40, -100, -20]
+
+ const zeroArray = [0, 0, 0, 0]
+ const emptyArray = []
+
+ it('Testing with positive arrays', () => {
+ expect(findMaxRecursion(positiveArray, 0, positiveArray.length - 1)).toBe(5)
+ expect(findMaxRecursion(positiveArray1, 0, positiveArray1.length - 1)).toBe(
+ 100
+ )
+ })
+
+ it('Testing with negative arrays', () => {
+ expect(findMaxRecursion(negativeArray, 0, negativeArray.length - 1)).toBe(
+ -1
+ )
+ expect(findMaxRecursion(negativeArray1, 0, negativeArray1.length - 1)).toBe(
+ -10
+ )
+ })
+
+ it('Testing with positive and negative arrays', () => {
+ expect(
+ findMaxRecursion(
+ positiveAndNegativeArray,
+ 0,
+ positiveAndNegativeArray.length - 1
+ )
+ ).toBe(5)
+ expect(
+ findMaxRecursion(
+ positiveAndNegativeArray1,
+ 0,
+ positiveAndNegativeArray1.length - 1
+ )
+ ).toBe(100)
+ })
+
+ it('Testing with zero arrays', () => {
+ expect(findMaxRecursion(zeroArray, 0, zeroArray.length - 1)).toBe(0)
+ })
+
+ it('Testing with empty arrays', () => {
+ expect(findMaxRecursion(emptyArray, 0, emptyArray.length - 1)).toBe(
+ undefined
+ )
+ })
+})
diff --git a/Search/test/YoutubeVideoAssociation.test.js b/Search/test/YoutubeVideoAssociation.test.js
new file mode 100644
index 0000000000..c81bec76f0
--- /dev/null
+++ b/Search/test/YoutubeVideoAssociation.test.js
@@ -0,0 +1,25 @@
+import AssociationAlgorithm from '../YoutubeVideoAssociation'
+
+describe('Youtube Video Association Algorithm', () => {
+ const search = {
+ video: {
+ id: 'dQw4w9WgXcQ',
+ views: '100'
+ },
+ search: {
+ query: 'Rick Roll'
+ }
+ }
+
+ const algorithm = new AssociationAlgorithm(10)
+
+ test('The video should not be associated after one search', () => {
+ algorithm.search(search)
+
+ expect(algorithm.isVideoAssociated('dQw4w9WgXcQ', 'Rick Roll')).toBe(false)
+ })
+
+ test('The video should be associated after 11 searches', () => {
+ for (let i = 0; i < 10; i++) algorithm.search(search)
+ })
+})
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