Ojemba Assessment Spring 2023

Welcome to the Ojemba Assessment 😊

In the next 3 hours, we want you to take on a challenge. This challenge will be 100% Javascript. Please use the link we provided to access the repo.

Prerequesites

You need to have installed a Node.js instance (version 14 or higher). Try node --version in your terminal to check the version of your Node.js installation. You can install Node.js from nodejs.org/en/download.

After having cloned the repository onto your machine, please run the following command in the terminal: npm install. This command will install every dependency your repository needs. After this, you are ready to start coding!

Structure of the challenge

The challenge is divided in 3 parts:

Create a password validator
Create a penalty point calculator for passwords
Improve 3 functions code

Test Driven Development

For the 2 first steps we wrote some jest tests and to check if your code is working properly we will run "npm test" and see which tests pass and which fail. Feel free to run this command yourself to check your solutions. Run npm run test:watch to get live update on passing tests while you code.

1. Password Validator

We have provided a function isValidPassword in the passwordValidation.js file. This function receives a password and your job is to check if it is a valid one or not.

A password is valid when it satisfies the following criteria

The password is exactly 10 digits or characters;
The password is composed by digits and numbers;
The password does not contain special characters like @, /, #, etc;
The password contain a mix of uppercase and lowercase characters;
Whenever we have a sequence of numbers, these can not be sequences of directly ascending or descending digits, ex: it would fail for a12345678A but not for a88765432A;
it is not a forbidden password (in the index.js file we provide an array with the forbidden passwords);
it consists of at least 4 different digits/characters, e.g. BBBBcc1111 is not allowed, since it consists of only 3 types of symbols: B, c and 1;

2. Penalty Points Calculator

In the file passwordPenalty.js you have to implement a second function called penaltyPoints. This function receives a password code and returns the penalty points awarded to that password.

Penalty rules: Sequences of characters are awarded penalty points in the following order:

Sequence of 2 characters/numbers are awarded 1 penalty point
Sequences of 3 or more characters/numbers are awarded 2 penalty points Examples:

The password 2hT62g33u7 has 1 penalty point for the sequence of 3's;
The password yh53GGf7h6 has 1 penalty point for the sequence of G's;
The password hg6666WT5s has 2 penalty points for the sequence of 6's;
The password hg6WTTT5ms has 2 penalty points for the sequence of T's;

3. Improve functions code

In the files improvements-1.js, improvements-2.js, improvements-3.js you will find 3 functions. The idea here is to have you improving these functions code in whatever way you feel is right. Below we give some tips to keep in mind.

Improvements could be:

Easy to read function
Not too long function
Fault tolerant

Please do not remove the export default function ..., since it is required for testing.

Submit your solution

You can submit your solution at any time before the deadline by just commiting to the remote git repository. Don't forget to push. It is not required to structure yoru commits, nor do you have to add a structured commit message. You can push as many commits as you like until the deadline is over.

IMPORTANT NOTES AND TIPS

Feel free to create auxiliar functions in case you want to;
You're allowed so search on Google (but try to understand the solution before copy and paste it and choose the right source)
Have fun 👍

mutesialine/algorithm-challenge