webkeyz Flutter Task

Welcome to our webkeyz technical task for Flutter developer candidates. This document outlines a coding challenge designed to assess your problem-solving skills and expertise in Dart and Flutter.

Implement Payment Planner Algorithm with UI Widget

Description

The task is to implement the Payment Planner algorithm using Dart, which is responsible for calculating payments among participants to settle balances in a group. Additionally, you will create a UI widget to display these payments in a format of your choice and develop a test widget for this display widget.

Algorithm Rules

• Each participant has a balance indicating the amount they owe or are owed.
• The objective is to settle all balances so that each participant has an equal balance.
• Participants with positive balances owe money, while those with negative balances are owed money.
• The algorithm calculates payments to transfer money between participants to settle their balances.
• Payments are made from participants with positive balances to those with negative balances.
• The aim is to minimize the number of transactions needed to efficiently settle all balances.

Specifications

Payment Planner Algorithm:

• Work with the Dart class PaymentPlanner, which contains logic for calculating payments among participants.
• The PaymentPlanner class has an initialize method that takes an array of participant objects.
• Each participant object has attributes balance and name.
• The PaymentPlanner class's payments method calculates the necessary payments to settle balances.
• Focus on implementing the payments method to pass the provided unit tests.

Payment Display Widget:

• Create a widget to display the payments calculated by the Payment Planner algorithm.
• Design the widget to take an array of payment objects and display the information clearly.

Test Widget for Payment Display Widget:

• Develop a test widget to verify the functionality of the payment display widget.
• Ensure the test widget checks that the payment display widget accurately shows the payments.

Unit tests using flutter_test are provided to ensure the correctness of both the algorithm implementation and the widget functionalities.

Refer to the provided unit tests for expected behavior and outcomes.

How to Submit

To submit your completed task, please follow these steps:

1. Fork the Repository: Fork the provided GitHub repository to your own GitHub account.
2. Implement the Solution: Complete the task in your forked repository, ensuring you adhere to the provided specifications and pass all unit tests.
3. Commit Your Changes: Commit your changes using meaningful messages that follow git conventional commit standards. Ensure your commits clearly document the evolution of your solution.
4. Email Your Submission: Once you are satisfied with your implementation, send an email to [email protected]. Use the subject line "Flutter Task Submission - [Your First Name] [Your Last Name]" and include the URL of your forked GitHub repository in the email body.

Replace [Your First Name] and [Your Last Name] with your actual names. This assists us in identifying your submission efficiently.

We look forward to your innovative solutions and wish you the best of luck! 🚀✨