merge: Create findRelativeMaximumPointCount.js (#771)

* Create find_relative_maximum_point_count.js

print number of relative maximum points in array
runs in O(n)

* rename file to match requested casing

* add inline comments and greater documentation

* fix wrong reference to algorithm explanation

* remove live code and fix function misnaming

* add multiple cases tests

* add last line as empty line

* git pull

* style changes

* move tests to test folder

* chore: fix spelling

* fix package-lock

* revert to old lock file

* chore: add line feed

Co-authored-by: Rak Laptudirm <raklaptudirm@gmail.com>

Data-Structures/Array/test/NumberOfLocalMaximumPoints.test.js

@@ -0,0 +1,43 @@
+import { NumberOfLocalMaximumPoints } from '../NumberOfLocalMaximumPoints'
+
+describe('LocalMaximomPoint tests', () => {
+  it('test boundry maximom points - last element', () => {
+    const Array = [1, 2, 3, 4, 5, 6, 12]
+    expect(NumberOfLocalMaximumPoints(Array)).toEqual(1)
+  })
+
+  it('test boundry maximom points - first element', () => {
+    const Array = [13, 6, 5, 4, 3, 2, 1]
+    expect(NumberOfLocalMaximumPoints(Array)).toEqual(1)
+  })
+
+  it('test boundry maximom points - both boundries have maximum points', () => {
+    // Test a mix of number types (i.e., positive/negative, numbers with decimals, fractions)
+    const Array = [13, 2, 3, 4, 5, 6, 12]
+    expect(NumberOfLocalMaximumPoints(Array)).toEqual(2)
+  })
+
+  it('multiple maximom points in the middle', () => {
+    // Test a mix of number types (i.e., positive/negative, numbers with decimals, fractions)
+    const Array = [1, 3, 2, 5, 6, 9, 2, 7, 12, 1, 0]
+    expect(NumberOfLocalMaximumPoints(Array)).toEqual(3)
+  })
+
+  it('multiple maximom points in the middle with one at end', () => {
+    // Test a mix of number types (i.e., positive/negative, numbers with decimals, fractions)
+    const Array = [1, 3, 2, 5, 6, 9, 2, 7, 12, 1, 10]
+    expect(NumberOfLocalMaximumPoints(Array)).toEqual(4)
+  })
+
+  it('multiple maximom points in the middle with one at start', () => {
+    // Test a mix of number types (i.e., positive/negative, numbers with decimals, fractions)
+    const Array = [10, 3, 2, 5, 6, 9, 2, 7, 12, 1, 0]
+    expect(NumberOfLocalMaximumPoints(Array)).toEqual(3)
+  })
+
+  it('multiple maximom points in the middle with two more at both ends', () => {
+    // Test a mix of number types (i.e., positive/negative, numbers with decimals, fractions)
+    const Array = [10, 3, 11, 5, 6, 9, 2, 7, 12, 1, 10]
+    expect(NumberOfLocalMaximumPoints(Array)).toEqual(5)
+  })
+})