Challenge solved and also the plus exercise

src/_test_/demo6.test.js

@@ -1,11 +1,13 @@
-const { getMaxNumber, getMinNumber, getAverage } = require ('../demo6');
+const { getMaxNumber, getMinNumber, getAverage, fakerNumbers, average, max, min } = require ('../demo6');
+const fakeList = fakerNumbers();
 
 describe('getMaxNumber', () => {
 
   it('should return the max number', () => {
     expect(getMaxNumber([1,2,3,4,5,6,8,9])).toBe(9);
     expect(getMaxNumber([1,2,3,4,5,6,8,9,0,100])).toBe(100);
     expect(getMaxNumber([1,2,3,4,5,-66,8,9,0,34])).toBe(34);
+    expect(getMaxNumber(fakeList)).toBe(max(fakeList));
   });
 
 });
@@ -16,6 +18,7 @@ describe('getMinNumber', () => {
     expect(getMinNumber([1,2,3,4,5,6,8,9])).toBe(1);
     expect(getMinNumber([1,2,3,4,5,6,8,9,0,100])).toBe(0);
     expect(getMinNumber([1,2,3,4,5,-66,8,9,0,34])).toBe(-66);
+    expect(getMinNumber(fakeList)).toBe(min(fakeList));
   });
 
 });
@@ -26,6 +29,7 @@ describe('getAverage', () => {
     expect(getAverage([10, 10, 10])).toBe(10);
     expect(getAverage([1,2,3,4,5,6,7,8,9,10])).toBe(5.5);
     expect(getAverage([10,20,30])).toBe(20);
+    expect(getAverage(fakeList)).toBe(average(fakeList));
   });
 
 });

src/demo6.js

@@ -1,13 +1,66 @@
+const faker = require('faker')
+
 const getMaxNumber = (numbersArray) => {
   // your code here
+  const result = numbersArray.reduce((a, b) => Math.max(a, b))
+  return result
 }
 
 const getMinNumber = (numbersArray) => {
   // your code here
+  const result = numbersArray.reduce((a, b) => Math.min(a, b))
+  return result
 }
 
 const getAverage = (numbersArray) => {
   // your code here
+  const result = numbersArray.reduce((accum, currentValue) => accum + currentValue)
+  const avg = result / numbersArray.length
+  return avg
+}
+
+
+const fakerNumbers = () => {
+  numbers = []
+  for (let i = 0; i < 1000; i++) {
+    numbers.push(faker.random.number())
+  }
+  return numbers
+}
+
+const average = (numbersArray) => {
+  let total = 0;
+  for(let i = 0; i < numbersArray.length; i++) {
+    total += numbersArray[i];
+  }
+  const avg = total / numbersArray.length;
+  return avg
 }
 
-module.exports = { getMaxNumber, getMinNumber, getAverage };
+const max = (numbersArray) => {
+  let maximum = numbersArray[0]
+  for (let i = 0; i < numbersArray.length; i++) {
+    if (maximum >= numbersArray[i]) {
+      continue
+    } else {
+      maximum = numbersArray[i]
+    }
+  }
+  return maximum
+}
+
+
+const min = (numbersArray) => {
+  let minimum = numbersArray[0]
+  for (let i = 0; i < numbersArray.length; i++) {
+    if (minimum <= numbersArray[i]) {
+      continue
+    } else {
+      minimum = numbersArray[i]
+    }
+  }
+  return minimum
+}
+
+
+module.exports = { getMaxNumber, getMinNumber, getAverage, fakerNumbers, average, max, min};