chronushan
diff --git a/‎08_calculator/calculator.js
Lines changed: 21 additions & 3 deletions b/‎08_calculator/calculator.js
Lines changed: 21 additions & 3 deletions
diff --git a/‎08_calculator/calculator.spec.js
Lines changed: 8 additions & 8 deletions b/‎08_calculator/calculator.spec.js
Lines changed: 8 additions & 8 deletions
@@ -12,11 +12,29 @@ const sum = function (array) {
 	return answer;
 };
 
-const multiply = function () {};
+const multiply = function (array) {
+	let answer = array[0];
+	array.forEach((a) => {
+		if (a == array[0]) {
+			return;
+		} else {
+			answer *= a;
+		}
+	});
+	return answer;
+};
 
-const power = function () {};
+const power = function (a, b) {
+	return Math.pow(a, b);
+};
 
-const factorial = function () {};
+const factorial = function (a) {
+	let answer = 1;
+	for (let i = 1; i <= a; i++) {
+		answer *= i;
+	}
+	return answer;
+};
 
 // Do not edit below this line
 module.exports = {
 
@@ -39,39 +39,39 @@ describe("sum", () => {
 });
 
 describe("multiply", () => {
-	test.skip("multiplies two numbers", () => {
+	test("multiplies two numbers", () => {
 		expect(calculator.multiply([2, 4])).toBe(8);
 	});
-	test.skip("multiplies several numbers", () => {
+	test("multiplies several numbers", () => {
 		expect(calculator.multiply([2, 4, 6, 8, 10, 12, 14])).toBe(645120);
 	});
 });
 
 describe("power", () => {
-	test.skip("raises one number to the power of another number", () => {
+	test("raises one number to the power of another number", () => {
 		expect(calculator.power(4, 3)).toBe(64); // 4 to third power is 64
 	});
 });
 
 describe("factorial", () => {
-	test.skip("computes the factorial of 0", () => {
+	test("computes the factorial of 0", () => {
 		expect(calculator.factorial(0)).toBe(1); // 0! = 1
 	});
 
-	test.skip("computes the factorial of 1", () => {
+	test("computes the factorial of 1", () => {
 		expect(calculator.factorial(1)).toBe(1);
 	});
 
-	test.skip("computes the factorial of 2", () => {
+	test("computes the factorial of 2", () => {
 		expect(calculator.factorial(2)).toBe(2);
 	});
 
-	test.skip("computes the factorial of 5", () => {
+	test("computes the factorial of 5", () => {
 		expect(calculator.factorial(5)).toBe(120);
 	});
 
-	test.skip("computes the factorial of 10", () => {
+	test("computes the factorial of 10", () => {
 		expect(calculator.factorial(10)).toBe(3628800);
 	});
 });