Merge pull request #30 from cwh0430/PythagoreanTheorem

tehliang · web-flow · commit 41d2d2135411 · 2022-08-31T13:30:27.000+08:00
Added PythagoreanTheorem.js
diff --git a/Maths/PythagoreanTheorem.js b/Maths/PythagoreanTheorem.js
@@ -0,0 +1,39 @@
+/**
+ * @function calcHypotenuse
+ * @description Calculate the hypothenuse of a triangle.
+ * @param {Integer} base - Integer
+ * @param {Integer} adjacent - Integer
+ * @return {Integer} - hypotenuse
+ * @see [calcHypotenuse](https://en.wikipedia.org/wiki/Pythagorean_theorem)
+ * @example calcHypotenuse(6,8) = 10
+ */
+const calcHypotenuse = (base, adjacent) => {
+  const hypotenuse = Math.sqrt(base ** 2 + adjacent ** 2)
+  return hypotenuse
+}
+
+/**
+ * @function calcOtherSides
+ * @description Calculate the other sides of a triangle.
+ * @param {Integer} side1 - Integer
+ * @param {Integer} side2 - Integer
+ * @return {Integer} - sides
+ * @see [calcOtherSides](https://en.wikipedia.org/wiki/Pythagorean_theorem)
+ * @example calcOtherSides(6,10) = 8
+ */
+const calcOtherSides = (side1, side2) => {
+  if (side1 > side2) {
+    const side = Math.sqrt(side1 ** 2 - side2 ** 2)
+    return side
+  } else if (side2 > side1) {
+    const side = Math.sqrt(side2 ** 2 - side1 ** 2)
+    return side
+  }
+
+  return 'Both sides cannot be the same value'
+}
+
+export {
+  calcHypotenuse,
+  calcOtherSides
+}
diff --git a/Maths/test/PythagoreanTheorem.test.js b/Maths/test/PythagoreanTheorem.test.js
@@ -0,0 +1,23 @@
+import * as py from '../PythagoreanTheorem'
+
+describe('Testing calcHypotenuse calculations', () => {
+  it('with natural number', () => {
+    const result = py.calcHypotenuse(6, 8)
+    expect(result).toBe(10)
+  })
+})
+
+describe('Testing calcOtherSides calculations', () => {
+  it('with side1 bigger than side2', () => {
+    const result = py.calcOtherSides(6, 10)
+    expect(result).toBe(8)
+  })
+  it('with side2 bigger than side1', () => {
+    const result = py.calcOtherSides(10, 6)
+    expect(result).toBe(8)
+  })
+  it('with side1 equals side2', () => {
+    const result = py.calcOtherSides(10, 10)
+    expect(result).toBe('Both sides cannot be the same value')
+  })
+})
