Euronet Worldwide Software Engineer Interview Questions and Answers

Q1. Explain the react lifecycle functions and how they work
Ans. 
React lifecycle functions are methods that are automatically called at specific points in a component's life cycle.
• Mounting: constructor, render, componentDidMount

• Updating: render, componentDidUpdate

• Unmounting: componentWillUnmount
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Q2. Css box model, difference between padding and margin
Ans. 
Padding is the space inside the border of an element, while margin is the space outside the border.
• Padding is used to create space between the content and the border of an element.

• Margin is used to create space between the border of an element and other elements.

• Padding affects the size of the content area, while margin affects the positioning of the element.

• Example: padding: 10px will create 10 pixels of space inside ...read more
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Q1. What are your salary expectations in CTC and variables?
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Q2. Will you relocate to the location required?
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Q1. Basic Java related questions, OOPs concepts
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Q2. Write code for encryption of the code
Ans. 
Encryption of code involves converting plaintext into ciphertext to secure data.
• Choose a strong encryption algorithm like AES or RSA

• Generate a key for encryption

• Encrypt the plaintext using the key and algorithm

• Store or transmit the ciphertext securely
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Q1. Java Related questions, also some system design-related questions
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Q2. Show the abstraction and write code for function overriding
Ans. 
Abstraction is hiding the implementation details, function overriding is providing a new implementation for a method in a subclass.
• Abstraction involves hiding the complex implementation details and showing only the necessary features to the user.

• Function overriding occurs in inheritance when a subclass provides a specific implementation for a method that is already defined in its superclass.

• Example: Parent class 'Anima...read more
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Q1. Normal questions related to projects and work ethics
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Q1. Explain java8 concepts
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Q2. Internal working of hashmap
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It consist of 4 DSA ques and few quiz and opps concept based ques
1st was string based Medium level ques.
2nd was a ques based on 2 pointer
And other 2 was from Vector and Linked list easy ques

Q1. It was stock buy and sell ques on leetcode where we need to find Max profit and what day to buy and sell
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Q2. 2d array ques to print natural numbers in spiral form
Ans. 
Print natural numbers in spiral form using a 2D array.
• Create a 2D array with dimensions n x n.

• Initialize variables for row and column boundaries.

• Iterate through the array in a spiral pattern, filling in natural numbers.
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Q3. Hard level linked list ques
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Technical sql questions

Oops concept and sql db questions

Q1. Dependency injection
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Q1. Innerjoin, index, some logical question.
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Q1. Tell me about one project you worked on?
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Q2. Tell me about yourself?
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