Resolve till 3rd exercise inclusive

Author: andreigrigoruta

01_helloWorld/helloWorld.js

@@ -1,5 +1,5 @@
-const helloWorld = function() {
-  return ''
+const helloWorld = function () {
+  return "Hello, World!";
 };
 
 module.exports = helloWorld;

02_repeatString/repeatString.js

@@ -1,5 +1,10 @@
-const repeatString = function() {
-
+const repeatString = function (string, num) {
+  if (num < 0) return "ERROR";
+  let resultString = "";
+  for (let i = 0; i < num; i++) {
+    resultString += string;
+  }
+  return resultString;
 };
 
 // Do not edit below this line

02_repeatString/repeatString.spec.js

@@ -1,37 +1,39 @@
-const repeatString = require('./repeatString')
+const repeatString = require("./repeatString");
 
-describe('repeatString', () => {
-  test('repeats the string', () => {
-    expect(repeatString('hey', 3)).toEqual('heyheyhey');
+describe("repeatString", () => {
+  test("repeats the string", () => {
+    expect(repeatString("hey", 3)).toEqual("heyheyhey");
   });
-  test.skip('repeats the string many times', () => {
-    expect(repeatString('hey', 10)).toEqual('heyheyheyheyheyheyheyheyheyhey');
+  test("repeats the string many times", () => {
+    expect(repeatString("hey", 10)).toEqual("heyheyheyheyheyheyheyheyheyhey");
   });
-  test.skip('repeats the string 1 times', () => {
-    expect(repeatString('hey', 1)).toEqual('hey');
+  test("repeats the string 1 times", () => {
+    expect(repeatString("hey", 1)).toEqual("hey");
   });
-  test.skip('repeats the string 0 times', () => {
-    expect(repeatString('hey', 0)).toEqual('');
+  test("repeats the string 0 times", () => {
+    expect(repeatString("hey", 0)).toEqual("");
   });
-  test.skip('returns ERROR with negative numbers', () => {
-    expect(repeatString('hey', -1)).toEqual('ERROR');
+  test("returns ERROR with negative numbers", () => {
+    expect(repeatString("hey", -1)).toEqual("ERROR");
   });
-  test.skip('repeats the string a random amount of times', function () {
+  test("repeats the string a random amount of times", function () {
     /*The number is generated by using Math.random to get a value from between
     0 to 1, when this is multiplied by 1000 and rounded down with Math.floor it 
     equals a number between 0 to 999 (this number will change everytime you run
     the test).*/
 
-    // DO NOT use Math.floor(Math.random() * 1000) in your code, 
+    // DO NOT use Math.floor(Math.random() * 1000) in your code,
     // this test generates a random number, then passes it into your code with a function parameter.
     // If this doesn't make sense, you should go read about functions here: https://www.theodinproject.com/paths/foundations/courses/foundations/lessons/fundamentals-part-3
-    const number = Math.floor(Math.random() * 1000)
+    const number = Math.floor(Math.random() * 1000);
     /*The .match(/((hey))/g).length is a regex that will count the number of heys
     in the result, which if your function works correctly will equal the number that
     was randomly generated. */
-    expect(repeatString('hey', number).match(/((hey))/g).length).toEqual(number);
+    expect(repeatString("hey", number).match(/((hey))/g).length).toEqual(
+      number
+    );
   });
-  test.skip('works with blank strings', () => {
-    expect(repeatString('', 10)).toEqual('');
+  test("works with blank strings", () => {
+    expect(repeatString("", 10)).toEqual("");
   });
 });

03_reverseString/reverseString.js

@@ -1,5 +1,5 @@
-const reverseString = function() {
-
+const reverseString = function (string) {
+  return string.split("").reverse().join("");
 };
 
 // Do not edit below this line

03_reverseString/reverseString.spec.js

@@ -1,18 +1,18 @@
-const reverseString = require('./reverseString')
+const reverseString = require("./reverseString");
 
-describe('reverseString', () => {
-  test('reverses single word', () => {
-    expect(reverseString('hello')).toEqual('olleh');
+describe("reverseString", () => {
+  test("reverses single word", () => {
+    expect(reverseString("hello")).toEqual("olleh");
   });
 
-  test.skip('reverses multiple words', () => {
-    expect(reverseString('hello there')).toEqual('ereht olleh')
-  })
+  test("reverses multiple words", () => {
+    expect(reverseString("hello there")).toEqual("ereht olleh");
+  });
 
-  test.skip('works with numbers and punctuation', () => {
-    expect(reverseString('123! abc!')).toEqual('!cba !321')
-  })
-  test.skip('works with blank strings', () => {
-    expect(reverseString('')).toEqual('')
-  })
+  test("works with numbers and punctuation", () => {
+    expect(reverseString("123! abc!")).toEqual("!cba !321");
+  });
+  test("works with blank strings", () => {
+    expect(reverseString("")).toEqual("");
+  });
 });