Flip Robo Technologies Interview Questions and Answers

Q1. What is component in react
Ans. 
A reusable piece of UI that can be composed with other components to form a complete UI.
• Components are the building blocks of React applications.

• They can be either functional or class-based.

• They can have state, props, and lifecycle methods.

• They can be reused and composed to create complex UIs.

• Examples include buttons, forms, and navigation menus.
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Q2. What is the map method
Ans. 
The map method creates a new array with the results of calling a provided function on every element in the original array.
• The map method does not modify the original array.

• The provided function takes three arguments: currentValue, index, and array.

• The map method returns a new array with the same length as the original array.

• Example: const numbers = [1, 2, 3]; const doubledNumbers = numbers.map(num => num * 2); // [2, 4...read more
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Q3. What is the use state in react
Ans. 
useState is a hook in React that allows functional components to have state.
• useState is used to manage state in functional components

• It returns an array with two elements: the current state value and a function to update it

• Example: const [count, setCount] = useState(0);

• The initial state value is passed as an argument to useState
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Q4. What is for each method
Ans. 
The forEach method executes a provided function once for each array element.
• Used to iterate over elements in an array.

• Syntax: array.forEach(callback(currentValue, index, array))

• Does not return a new array; returns undefined.

• Example: [1, 2, 3].forEach(num => console.log(num)); // Logs 1, 2, 3

• Cannot be stopped or broken; continues until all elements are processed.
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Q5. Difference between for each and map method
Ans. 
forEach and map are array methods in JavaScript. forEach executes a provided function once for each array element. Map creates a new array with the results of calling a provided function on every element in the calling array.
• forEach does not return anything, it just iterates over the array and executes the provided function for each element.

• Map returns a new array with the results of calling a provided function on ever...read more
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I developed counter app using react js

Q1. Create counter app
Ans. 
A counter app that allows users to increment and decrement a number.
• Create a variable to store the initial number

• Create two buttons, one for incrementing and one for decrementing the number

• Add event listeners to the buttons to update the number when clicked

• Display the number on the screen
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Python, pandas, numpy, visulization

Give small web scraping and data analysis project

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Q1. Different types of oops, explain oops
Ans. 
Object-oriented programming (OOP) is a programming paradigm that uses objects to represent and manipulate data.
• OOP is based on the concept of classes and objects.

• Encapsulation, inheritance, and polymorphism are key principles of OOP.

• Examples of OOP languages include Java, C++, and Python.
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