Rename folders with numbers and underscores

02_repeatString/README.md

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+# Exercise 02 - repeatString
+
+Write a function that simply repeats the string a given number of times:
+
+```javascript
+repeatString('hey', 3) // returns 'heyheyhey'
+```
+
+You will notice in this exercise that there are multiple tests (see in file `repeatString.spec.js`). Only the first test is currently enabled. So after making sure that this first one passes, enable the others one by one by deleting the `.skip` from the `test.skip()` function.
+
+
+## Hints
+
+- Take note of the above function call- how exactly is it being called?
+
+- You're going to want to use a loop for this one.
+
+- Create a variable to hold the string you're going to return, create a loop that repeats the given number of times and add the given string to the result on each loop.
+
+- If running `npm test repeatString.spec.js` returns results similar to the below:
+
+```
+Test Suites: 1 passed, 1 total
+Tests:       6 skipped, 1 passed, 7 total
+```
+
+- Make sure you have enabled the rest of the tests (see above).

02_repeatString/repeatString.js

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+const repeatString = function() {
+
+};
+
+module.exports = repeatString;

02_repeatString/repeatString.spec.js

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+const repeatString = require('./repeatString')
+
+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.skip('repeats the string 1 times', () => {
+    expect(repeatString('hey', 1)).toEqual('hey');
+  });
+  test.skip('repeats the string 0 times', () => {
+    expect(repeatString('hey', 0)).toEqual('');
+  });
+  test.skip('returns ERROR with negative numbers', () => {
+    expect(repeatString('hey', -1)).toEqual('ERROR');
+  });
+  test.skip('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, 
+    // 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)
+    /*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 randomaly generated. */
+    expect(repeatString('hey', number).match(/((hey))/g).length).toEqual(number);
+  });
+  test.skip('works with blank strings', () => {
+    expect(repeatString('', 10)).toEqual('');
+  });
+});