React Js User Interface

NAME: CHANDRALEKHA

Full Stack / UI/React Developer

EMAIL: *********@*****.***

PHONE: 314-***-****

https://www.linkedin.com/in/chandralekha-g-74406b232/

PROFESSIONAL SUMMARY:

Around 9 years of experience as UI Developer with strong expertise in developing web pages and user interfaces using ReactJS, AngularJS, NodeJS, CSS3, jQuery, HTML5, DOM, Webpack, Bootstrap, JavaScript, AJAX, JSON.

Experience in all phases of SDLC like requirement analysis, implementation and maintenance, and extensive experience with Agile and SCRUM.

Hands on experience in developing User Interface (UI) Rich Web Applications, and Web Service Applications using Front End/User Interface (UI) Technologies like Object Oriented JavaScript, Typescript, Angular 2.0, Angular 4, React JS, Redux, Flux, Bootstrap, Media Queries, HTML, CSS Frameworks, Java.

Experienced working with Redux architecture using complex Object-Oriented concepts in improving the performance of the websites.

Strong experience in using React JS components, Forms, Events, Keys, Router, plus Redux, Animations and Flux concept.

Good experience in React JS for creating interactive UI's using One-way data flow, Virtual DOM, JSX, React Native concepts.

Solid understanding of React Virtual DOM Algorithm, for React performance optimization.

Experience in implementing Component life cycle architecture, store actions, using socket.io in React-Redux app to handle real time data, installing React Router, ThunkRedux for API calls in React JS.

Good experience in using the latest JavaScript framework Angular 2 and worked with all its various concepts like services, custom directives, promises, factory and providers.

Experience in using various Amazon Web Services (AWS) components like EC2 for virtual servers, S3 for storing objects, Elastic Beanstalk, Elastic Cache and Dynamo DB for storing data.

Extensive experience working on CSS Background, CSS Positioning, CSS Text, CSS Border, CSS Margin, CSS Sprites, CSS Padding, CSS Table, Pseudo Elements & Classes, and CSS Behaviors in CSS.

Extensive knowledge of developing single - page applications (SPAs).

Good expertise in analyzing the Document Object Model (DOM) Layout, DOM Functions, and JavaScript functions, Cascading Styles across cross-browser using Fire Bug, Developer Tool Bar.

Expert in creating Complex Crystal Reports Ad-Hoc Reports, Frequency Reports, Summary Reports, Drill-down, Dynamic grouping, graphical, aging reports.

Expertise in writing SQL, PL/SQL, Stored Procedures, Cursors, Triggers with Oracle 9i/10g, MySQL, PostgreSQL, MongoDB, DB2, Blob storage and MS-SQL Server.

Good experience in writing application-level code to interact with APIs, RESTful Web Services using AJAX, JSON.

Experience with Content Management Systems like WordPress.

Experience in developing web service applications using SOAP and REST APIS.

Good knowledge of database connectivity (JDBC) for databases like SQL, NoSQL, MongoDB, SQLite.

Strong experience in unit testing tools of JavaScript framework like Karma and Jasmine for Angular and Mocha and Chai for React JS.

Expertise in tools and IDEs for development and design like Eclipse, Visual studio, Notepad++, IntelliJ, ATOM, JDev, NetBeans, WebStorm, Bracket.

Good experience in automated build process by using Jenkins and Maven.

Hands on experience with version control tools like GIT.

Experienced in testing Angular applications using Jasmine, Mocha, and Karma.

Experience in Unit Testing (UIT), Integration Testing and in preparing test cases.

Expertise working on Agile methodology and experience working in a fast-paced Scrum environment.

Good experience with Object Oriented Design/Development (OOD), Model View Control (MVC) design pattern and Test-Driven Development (TDD).

TECHNICAL SKILLS:

Programming Languages

Java, JavaScript, C, C++, Typescript, PL/SQL

Web Technologies

HTML/HTML5, CSS2/CSS3, XML, JavaScript, AJAX, JQuery, JSF, JSP, JDBC, Rxjs, JSON, Bootstrap, ReactJS, AngularJS, NodeJS, NPM, Babel

Cloud Technologies

AWS (EC2, EBS, S3, ECS, Lambda)

Web/App Servers

Apache Tomcat, WebSphere, JBoss, WebLogic

Version Control

GitHub, GIT, Tortoise GIT

IDEs

Eclipse, NetBeans, Eclipse, STS (Spring Tool Suite)

Debugging Tools

Chrome Developer Toolbar, Firebug, IE Developer Toolbar, Safari Web Developer

Distributed Computing

SOAP WS, RESTful WS, JMS API, WSDL, JAXP, JAXB, JNDI and XML

Other Tools/Libraries

Adobe Photoshop CS6, Bower, Grunt, GULP.js

Testing Tools

Junit, Jira, Log4j, Mocha, Chai, Jasmine, Karma

Database

MySQL, Oracle SQL PL/SQL, SQL Server (MS SQL), DB2, MongoDB

Operating System

Windows, MAC OS, UNIX/LINUX

PROFESSIONAL EXPERIENCE:

Client: Huntington Bank Jan 2023 - Present

Sr. UI Developer Colombus,OH

Responsibilities:

Involved in Requirements gathering, Analysis, Design, Development, and Testing of the application using AGILE methodology (SCRUM).

Implemented the business using Struts and Spring implementation and achieved data persistence through Hibernate ORM framework.

Demonstrated strong working knowledge of developing Microservices using J2EE technologies and building Web Services in Java, XML, jQuery, JavaScript, and HTML.

Responsible for React UI and architecture. Building components library, including Tree, Slide-View, and Table Grid.

Implemented stable React components and stand-alone functions to be added to any future pages.

Used React JS for templating for faster compilation and developing reusable components.

Proficient in developing web applications using Next.js, leveraging its server-side rendering (SSR) and static site generation (SSG) capabilities for enhanced performance and SEO.

Designed and implemented efficient and reusable React components within the Next.js framework, ensuring a modular and maintainable codebase.

Utilized props, state management, and context API to create dynamic and interactive user interfaces.

Implemented SSR using Next.js, significantly improving page load times and enhancing user experience by rendering content on the server side.

Utilized Next.js SSG to generate static HTML files, reducing server load and accelerating page load times, particularly for content that doesn't change frequently.

Developed complex routing structures using Next.js routing features, enabling smooth navigation and dynamic URL routing for single-page applications.

Strong in using the Node.js, and Require.js and MVC Frameworks in the development of the web application.

Involved in writing application-level code to interact with APIs, Restful Web Services using AJAX and JSON.

Expertise in analyzing the Document Object Model (DOM) Layout, DOM Functions, and Java Script functions Cascading Styles across cross-browser using Fire Bug, Developer Tool Bar

Expertise in React JS and working with React Flux architecture.

Strong in using the Node.js, and Require.js and MVC Frameworks in the development of the web application.

Experience with front-end development with back-end system integration

Proficient in using Unit.js testing framework along with Jasmine, Karma, Protractor and Mocha test runners.

Utilized TypeScript's compatibility with JSX and React components for type-safe rendering.

Familiarity with API Management tools like Apigee to manage, secure, and analyze APIs throughout their lifecycle.

Experience with Service Mesh technology, specifically Istio, to enhance communication between microservices.

Worked on React.js Virtual Dom and React views, rendering using components which contains additional components called custom HTML tags.

Created and maintained reusable Vue.js components, contributing to code modularity and scalability.

Implemented responsive web design principles, ensuring applications perform well on various devices and screen sizes.

Integrated third-party libraries and plugins into Vue.js applications to enhance functionality and user experience.

Implemented unit tests using Jest to ensure code reliability and identify and resolve issues early in the development process.

Actively kept up to date with the latest Vue.js developments and best practices to continuously improve skills and stay current with industry trends.

Contributed to open-source Vue.js projects or created personal projects to showcase skills and share knowledge with the community.

Worked with VUE JS Forms, Validations, Modules, Components, directives, controllers and HTTP Request.

Worked on Vue.js events distribution and parent chain for parent-child component communication.

Manipulated DOM, handled events and applied animation effects with Vue.js.

Developed Web Forms for User Interfaces using ASP.NET and C#.NET using Server Controls, HTML

Controls and User Controls.

Published Web services using C#.NET to interact with the other applications and exposed them using SOAP.

Experience with real-time data updates using GraphQL subscriptions, enhancing the user experience with live data.

Excellent understanding of RESTful API integration alongside GraphQL to meet specific application requirements.

Collaborative work with back-end developers to define and evolve GraphQL schemas and resolver functions.

Implemented stable React.js components and stand-alone functions to be added to any future pages.

Worked with backend engineers to optimize existing API calls to create efficiencies by deprecating unneeded API calls. Used Node.js for heavy DOM manipulation.

Called the Restful web services calls for POST, PUT, DELETE and GET methods.

Used React.js for Templating for faster compilation and developing reusable components.

Created Cross-Browser compatible and standards-compliant CSS-base page layouts.

Utilized React and created efficient data flow architecture to create a lightweight and render efficient web app.

Implemented Component Driven Development (CDD) methodology using React Storybook, resulting in a more efficient and scalable development process.

Established React Storybook as a central hub for showcasing and documenting UI components across the development team.

Implemented the Drag and Drop functionality using React-Draggable.

Strong problem-solving skills to handle data transformation and manipulation within the GraphQL layer.

Experience in optimizing GraphQL queries for performance, ensuring efficient data retrieval.

Collaboration with UI/UX designers to implement GraphQL-powered features that enhance the user experience.

Used React.js to create views to hook up models to the DOM and synchronize data server as a Single Page Application (SPA).

Worked on tools like Grunt, Gulp and Jenkins.

Configured, monitored, and automated Amazon Web Services as well as involved in deploying the

content cloud platform on Amazon Web Services (AWS) using EC2 and S3.

Debugging applications in different browsers using Firebug, and testing applications using JUnit, Jasmine, Karma, Protractor and Grunt tools

Implementation of restful services for product selector Mentor junior developers.

Actively participate in our scrum meetings work with the team to diagnose and resolve bugs and

support requests.

Environment: ReactJS, Redux, NodeJS, HTML5, CSS3, JavaScript, ExpressJS, JQuery, Ajax, JSON, XML, RWD, Twitter Bootstrap, Rest API, Eclipse, MongoDB, Jira, Mocha, Chai, Git

Client: Bank of America Aug 2021 – Dec 2022

Sr. UI Developer Woonsocket, RI

Responsibilities:

Developing web front end interfaces using HTML/HTML 5, CSS3, JavaScript, PHP, XHTML, jQuery, Java,

AJAX, JSON, Angular 2/4, Node JS, React JS, Angular JS, Vue JS, jQuery and Bootstrap.

Collaborate with the product owner to articulate the best technological business solution.

Developed responsive and user-friendly web applications using Vue.js, ensuring smooth and interactive user experiences.

Implemented Vue.js components and integrated them with RESTful APIs to fetch and display dynamic data from the backend.

Utilized Vuex to manage the application's state and ensure seamless data flow between components.

Implemented client-side routing using Vue Router to create single-page applications (SPAs) with smooth navigation.

Improved application performance by optimizing Vue.js components and reducing rendering and loading times.

Demonstrated expertise in JavaScript (ES6+) with a deep understanding of modern language features, including arrow functions, classes, destructuring, and template literals.

Implemented robust security measures to ensure data privacy and compliance with industry standards such as GDPR and HIPAA.

Proficient in setting up OAuth 2.0 authentication for secure API access, controlling user and application authorization to interact with Salesforce data.

Implemented token-based authentication mechanisms to enhance API security and prevent unauthorized access.

Developed custom REST APIs within Salesforce to expose specific functionalities and data to external applications while maintaining data integrity and security.

Implemented versioning and documentation strategies to ensure API stability and ease of integration for third-party developers.

Leveraged Salesforce's data manipulation capabilities to transform, enrich, and cleanse data before exposing it through REST APIs.

Implemented data transformation logic to adapt data from Salesforce's native format to meet the requirements of external systems.

Advised development teams on integration best practices, ensuring adherence to industry standards and guidelines for robust and maintainable integrations.

Conducted code reviews and provided constructive feedback to ensure the quality and security of integration implementations.

Skilled in developing REST APIs using Python, specifically Flask or FastAPI.

Experience with front-end JavaScript/TypeScript for building responsive user interfaces.

Familiarity with Swift and Objective-C, enhancing capabilities for cross-platform development.

Competence in native build tools such as Xcode.

Strong UX and design application skills to create visually appealing and user-friendly interfaces.

Proven track record of working with early-stage startups and handling complex projects independently.

Comfortable with Redux, REST API integration, and version control tools like Git and GitHub.

Proficiency with integrated development environments, including WebStorm and VSCode.

Well-versed in Agile software development and Scrum methodology.

Familiarity with push notifications and cloud messaging APIs

Skilled in working with XML/JSON data models and integrating them with REST APIs.

Implemented comprehensive monitoring and error-handling mechanisms for REST API integrations, including logging, alerting, and automated error resolution.

Proactively optimized API performance by implementing efficient query strategies, data caching, and asynchronous processing techniques to minimize response times.

Created clear and comprehensive documentation for REST API endpoints, including usage guidelines, request/response examples, and potential error scenarios.

Identified and resolved performance bottlenecks through code optimization, efficient API calls, and strategic data caching, resulting in a responsive and user-friendly application.

Worked closely with product managers, designers, and backend developers to translate business requirements into technical specifications and deliver high-quality solutions.

Developed comprehensive unit tests for React Native components and functionality, ensuring code reliability and maintainability.

Documented the codebase, API integrations, and technical decisions, facilitating knowledge sharing and effective onboarding for fellow team members.

Successfully investigated and resolved UI, functionality, and integration issues within the mobile application, collaborating with cross-functional teams to deliver timely solutions.

Maintained up-to-date knowledge of React Native development, Salesforce integration, and mobile application trends, ensuring the adoption of best practices.

Proficient in building responsive and scalable front-end applications using JavaScript, Vue.js, and React.js, ensuring a seamless user experience.

Experienced in optimizing front-end code for performance, identifying and addressing bottlenecks.

Proficient in creating and enhancing business reports using Power BI, enabling data-driven decision-making.

Capable of extracting, transforming, and visualizing complex data sets for meaningful insights.

Skilled at designing interactive and user-friendly dashboards and reports.

Competent in deploying applications in Azure cloud environments with knowledge of various interconnected Azure components such as Azure Functions, Azure SQL Database, and Azure App Service.

Experienced in configuring, monitoring, and optimizing cloud resources for maximum efficiency and scalability.

Proficient in implementing security and compliance measures in Azure deployments.

Proficient in understanding and enhancing applications built with Python and Django, a versatile web development framework.

Skilled in developing and maintaining server-side components and RESTful APIs using Django.

Environment: ReactJS, Redux, NodeJS, HTML5, CSS3, JavaScript, ExpressJS, JQuery, Ajax, JSON, XML, RWD, Twitter Bootstrap, Rest API, Eclipse, MongoDB, Jira, Mocha, Chai, Git

Client: Coca – Cola Nov 2020 – Jul 2021

Full Stack UI Developer Atlanta, Georgia

Responsibilities:

Involved in the complete Software Development Life Cycle (SDLC) including Analysis, Design, Implementation, Testing and Maintenance with Scrum (Agile) Methodology.

Developed re-usable and maintainable Cross-Platform HTML, CSS and JavaScript for frontend web application components while adhering to web and team standards.

Built Single page application (SPA) using HTML5, CSS3, JavaScript, React with Redux, AJAX, JSON, Bootstrap, Tuxedo and Eclipse.

Proficient in Java and Scala programming languages, with a solid understanding of object-oriented programming principles.

Skilled in writing comprehensive unit tests for UI components using testing frameworks and libraries such as Jest and React Testing Library.

Proficient in using popular testing frameworks such as Jest, JUnit, and Mocha to create effective and efficient unit tests for different programming languages.

Implemented various screens for the front end using React.js and used various predefined components from NPM (Node Package Manager) and Redux library.

Worked on React.js Virtual Dom and React views, rendering using components which contains additional components called custom HTML tags.

Knowledgeable in HTML and CSS, with experience using utility CSS frameworks.

Proficient in debugging, performance optimization, and maintaining high-quality code with automated testing.

Expertise in deploying and maintaining applications on the App Store.

Experience in distributing apps to QA teams and assisting in user acceptance testing.

Effective communication with business and IT stakeholders to translate business requirements into technical specifications.

Familiarity with Atlassian tools, including JIRA, Bitbucket, and Confluence.

Worked with React.js components, Forms, Events, Keys, Router, Animations and Flux concept.

Worked on Redux Uni-directional dataflow achieving the predictable application behavior.

Worked with the development team, involved in creating MVW (Web API) to implement ReactJS framework for client-side rendering to optimize the front-end.

Created ReactJS directives, factories, and services for developing single page web applications.

Implemented ReactJS client-side form validation to validate the user inputs before passing to back-end.

Developed React.js pages, Web services calls, and AJAX calls for the applications used in development of the web application to bind the data/model that is being retrieved from a database through services provided in a controller to the view using scope.

Capable of integrating Python/Django applications with front-end technologies for a seamless user experience.

Adept at identifying and fixing bottlenecks and performance issues in code, ensuring applications run efficiently.

Proficient in conducting code reviews and implementing best practices to enhance code quality.

Skilled in utilizing profiling and debugging tools to optimize code for speed and resource utilization.

Knowledgeable in implementing user authentication and authorization mechanisms across multiple systems, servers, and environments.

Experienced in using authentication protocols such as OAuth and JWT for secure access control.

Proficient in ensuring data privacy and compliance with authentication and authorization requirements.

Experienced in working within Agile development methodologies, facilitating iterative and collaborative project workflows.

Effective team player with the ability to work collaboratively with cross-functional teams.

Excellent verbal and written communication skills for clear project communication and documentation.

Used React.js in components like JSX, creating React components, Virtual.

Used Saga Middleware, Redux-Promise in application to retrieve data from Back-End.

Responsible for React UI and architecture, building components library, including Tree, Slide-View, and Table Grid.

Conducted workshops and training sessions to educate team members on Salesforce integration techniques and security best practices.

Proficient in integrating applications with Salesforce using REST APIs, enabling seamless data exchange and real-time updates between systems.

In-depth understanding of Salesforce's data model, including objects, fields, relationships, and data security settings, ensuring accurate and organized data management.

Skilled at creating custom objects and fields in Salesforce to cater to specific business requirements, tailoring the platform to the organization's unique needs.

Familiarity with frontend libraries like React.js and frameworks like Bootstrap, enriching UI development with reusable components and responsive design principles.

Managed data flow between the mobile app and Salesforce, implementing robust mechanisms for data validation, synchronization, and error handling to ensure data accuracy.

Used Redux to maintain state of react application. Used Redux-Thunk and Redux-Saga for asynchronous calls in the different applications.

Environment: HTML5, CSS3, JavaScript, Java, ReactJS, NodeJS, NPM (Node Package Manager), REST API, AJAX, JQuery, JSON, XML, Bootstrap, Eclipse, Jira, Mocha, Chai, SQL Server

Client: Goldman Sachs Nov 2019 – Oct 2020

React UI Developer Charlotte, NC

Responsibilities:

Designed, developed, and tested HTML5, CSS3, Bootstrap, JavaScript, JQuery and ReactJS that meet accessibility and web browser standards for website.

Designed CSS templates for use in all pages on the website working with CSS Background, positioning, text, border, margin, padding, and table.

Applied optimization techniques to reduce page size and load times to enhance user experience using sprites.

Developed user interface by using React JS, Flux for SPA development.

Implemented ReactJS code to handle cross browser compatibility issues in Mozilla, IE 7, 8, 9, Safari and FF.

Used React-Router to turn application into Single Page Application.

Used React JS components, Forms, Events, Keys, Router, Animations and Flux concept.

Used Web services (SOAP and RESTful) for transmission of large blocks of XML/JSON.

Used React-Autocomplete for creating Google map’s location search on the webpage Added Excel-Builder to download the Tabular data in Excel format using react.

Used Middleware, Redux-Promise in application to retrieve data from Back-End and to also perform RESTFUL services.

Added Dynamic Functionality by creating and dispatching Action Creators that deployed Actions.

Worked with backend engineers to optimize existing API calls to create efficiencies by deprecating unneeded API calls.

Called the Restful web services calls for POST, PUT, DELETE and GET methods.

Worked on AWS to fetch the pictures files from AWS to UI.

Used React flux to polish the data and for single directional flow.

Used Git for version controlling and regularly pushed the code to GitHub.

Used Maven to define the dependencies/plug-in and build the application.

Used JIRA as the bug tracking system to track and maintain the history of bugs/issues on everyday basis.

Used Mocha unit test framework to write unit tests for JavaScript code.

Performed the System Testing, Regression Testing for Complete UI after fixing the Issues which are reported by Testing Team.

Environment: JavaScript, ReactJS, Redux, Flux, HTML 5, CSS3, Bootstrap, Ajax, MySQL, XML, XSL, XSLT, JSON, GitHub, Restful API, AWS, JIRA, Mocha

Client: Cyient Apr 2016 – Oct 2019

Front End React Developer Hyderabad, India

Responsibilities:

Worked on React.JS components, Forms, Events, Keys, Router, Animations and Redux concept.

Worked on ReactJS Virtual DOM and React views, rendering using components which contains additional components called custom HTML tags.

Developed user interface by using React JS, Flux for SPA development.

Developed client-side validation code using JavaScript, Typescript and ReactJS.

Worked on ReactJS Virtual Dom and React views, rendering using components which contains additional components called custom HTML tags.

Written application-level code to interact with APIs, Restful Web Services using React Fetch.

Built stable React components and stand-alone functions to be added in future.

Used React JS for templating for faster compilation and developing reusable components.

Maintained states in the stores and dispatched the actions using Redux.

Developed the React container and presentational components (as State less and Functional components when applicable).

Responsible for front-end UI design using HTML5, CSS3, JavaScript, JQuery, jQuery plugins.

Created domain XML schema for use of integration, services, and messaging.

Used React flux to polish the data and for single directional flow.

Built custom validations before submitting it to backend using Redux Form.

Used Dreamweaver as editor for designing new pages.

Worked on Cross-Browser Compatibility and tested each & every web application on popular web browsers such as Internet Explorer, Firefox, Safari, Opera and Chrome.

Performed unit testing using Mocha and used Jira to keep track of bugs.

Used JIRA as the bug tracking system to track and maintain the history of bugs/issues on everyday basis.

Environment: ReactJS, JavaScript, Redux, Flux, GIT, Bootstrap, Ajax, JSON, HTML5, CSS3, Eclipse, MongoDB, SPA, Twitter Bootstrap, Dreamweaver, GIT, SASS, Rest API

Client: Radiant Technologies Mar 2014 – Mar 2016

Web Developer Hyderabad, India

Responsibilities:

Worked extensively on Angular 2, Angular 4, Twitter Bootstrap, RESTful web-services, HTML 4/5, CSS 2/3, JSON, Media queries for responsiveness.

Involved in developing applications using Angular (2, 4) like Grids, Toolbars, Panels, Combo-Box and Button etc.

Developed proof of concept in Angular 2 and technology research prior to proposals and demos.

Worked on DOM manipulation using JavaScript, JQuery and AngularJS.

Involved various features in Angular (2, 4) like data binding, routing, custom filters, custom directives to meet various customized requirements.

Developed the application as Single Page Application (SPA) using Angular 2/4 MVC framework.

Used Angular 2 UI Router to establish routing between nested html views.

Involved in writing the front-end code for the application using Angular 4.

Created Typescript controllers for the different pages in the views using Typescript.

Created SPAs with multiple views using route services and developed/tested features in an Agile environment using Angular 4 and Typescript.

Used Bootstrap along with Angular 4 in creating the application pages.

Worked on some of the new features of Angular 4 like new if else syntax, ng-templates, and form validators.

Designed and developed the application using Angular 2 framework along with HTML5, CSS3, Type Script, Java Script, Bootstrap, Node.js and NPM.

Enhanced legacy application by building new components in Angular 2 and typescript.

Developed single page applications using Angular 2, Typescript, web pack and grunt.

Performed Unit testing, and web-services with RESTful API.

Analyzed and resolved conflicts related to merging of source code for GIT.

Used JIRA for defect tracking and project management.

Environment: JavaScript, Typescript, Angular 2/4, SPA, Ajax, JSON, HTML5, CSS3, Restful API, Git, Jira

EDUCATION:

Jawaharlal Nehru Technological University Jun 2010 – Mar 2014

Hyderabad, Kukatpally, India

Computer Science Engineering

Coursework: C Programming and Data Structures, Digital Logic Design, Digital Logic Design, Computer Networks, Database Management Systems, Database Management Systems, Operating Systems, Software Engineering, Theory of Computation, Web Technologies, Object-Oriented Programming through JAVA, Design and Analysis of Algorithms, Compiler Design, Artificial Intelligence, Mobile Application Development, Big Data Analytics, Mathematical Foundations of Computer Science, Discrete Mathematical Structures.

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