solved 01-04

01_helloWorld/helloWorld.js

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

02_repeatString/repeatString.js

@@ -1,5 +1,13 @@
-const repeatString = function() {
+const repeatString = function (string, repititions) {
+  let newString = "";
 
+  if (repititions < 0) {
+    return "ERROR";
+  }
+  for (let i = 0; i < repititions; i++) {
+    newString += string;
+  }
+  return newString;
 };
 
 // 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 +1,7 @@
-const reverseString = function() {
+const reverseString = function (string) {
+  let splitString = string.split("");
 
+  return splitString.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("");
+  });
 });

04_removeFromArray/removeFromArray.js

@@ -1,5 +1,17 @@
-const removeFromArray = function() {
+const removeFromArray = function (array, ...removeElements) {
+  /*  removeFromArray([1, 2, 3, 4], 3); // should remove 3 and return [1,2,4]
 
+  ([1, 2, 3, 4], 3, 2) should return [1,4]
+    ``` */
+
+  let newArray = [];
+
+  array.forEach((element) => {
+    if (!removeElements.includes(element)) {
+      newArray.push(element);
+    }
+  });
+  return newArray;
 };
 
 // Do not edit below this line

04_removeFromArray/removeFromArray.spec.js

@@ -1,25 +1,25 @@
-const removeFromArray = require('./removeFromArray')
+const removeFromArray = require("./removeFromArray");
 
-describe('removeFromArray', () => {
-  test('removes a single value', () => {
+describe("removeFromArray", () => {
+  test("removes a single value", () => {
     expect(removeFromArray([1, 2, 3, 4], 3)).toEqual([1, 2, 4]);
   });
-  test.skip('removes multiple values', () => {
+  test("removes multiple values", () => {
     expect(removeFromArray([1, 2, 3, 4], 3, 2)).toEqual([1, 4]);
   });
-  test.skip('ignores non present values', () => {
+  test("ignores non present values", () => {
     expect(removeFromArray([1, 2, 3, 4], 7, "tacos")).toEqual([1, 2, 3, 4]);
   });
-  test.skip('ignores non present values, but still works', () => {
+  test("ignores non present values, but still works", () => {
     expect(removeFromArray([1, 2, 3, 4], 7, 2)).toEqual([1, 3, 4]);
   });
-  test.skip('can remove all values', () => {
+  test("can remove all values", () => {
     expect(removeFromArray([1, 2, 3, 4], 1, 2, 3, 4)).toEqual([]);
   });
-  test.skip('works with strings', () => {
+  test("works with strings", () => {
     expect(removeFromArray(["hey", 2, 3, "ho"], "hey", 3)).toEqual([2, "ho"]);
   });
-  test.skip('only removes same type', () => {
+  test("only removes same type", () => {
     expect(removeFromArray([1, 2, 3], "1", 3)).toEqual([1, 2]);
   });
 });