Merge 107dd35748 into 2c67b48c21

src/algorithms/math/pythagorean-theorem/README.md

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+Pythagorean theorem: the area of the square whose side is the hypotenuse 
+(the side opposite the right angle) is equal to the sum of 
+the areas of the squares on the other two sides.
+
+## References: 
+https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=8&ved=2ahUKEwjnuNvt9v6CAxXyv4kEHWYeCoAQFnoECC4QAQ&url=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FPythagorean_theorem&usg=AOvVaw3T92yCCxl4W1aa8hM6ft__&opi=89978449

src/algorithms/math/pythagorean-theorem/__test__/pythagoreanTheorem.test.js

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+import isPythagoreanTriangle from '../pythagoreanTheorem';
+
+describe('isPythagoreanTriangle', () => {
+  it('should return true if hyperparameters satisfied the pythagorean theorem, otherwise return false', () => {
+    expect(isPythagoreanTriangle(0, 0, 0)).toEqual(false);
+    expect(isPythagoreanTriangle(-1, 2, 5)).toEqual(false);
+    expect(isPythagoreanTriangle(3, 4, 5)).toEqual(true);
+    expect(isPythagoreanTriangle(3, 4, -5)).toEqual(false);
+    expect(isPythagoreanTriangle(-1, -1, 1)).toEqual(false);
+    expect(isPythagoreanTriangle(3, 4, 25)).toEqual(false);
+  });
+});

src/algorithms/math/pythagorean-theorem/pythagoreanTheorem.js

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+/**
+ * @param {number} a 
+ * @param {number} b 
+ * @param {number} c
+ * @return {boolean}
+ */
+export default function isPythagoreanTriangle(a, b, c) {
+  return (a <= 0 || b <= 0 || c <= 0) ? false : ((a * a) + (b * b) === (c * c));
+}