Info Edge Sdet Engineer Interview Questions and Answers

Contains around 40 aptitude questions that include CS fundamentals and also logical reasoning type and 2 coding questions of medium level

Q1. Peak element in array
Ans. 
Peak element in array is the element which is greater than or equal to its neighbors.
• Iterate through the array and check if the current element is greater than its neighbors.

• If the current element is greater than both neighbors, it is a peak element.

• If the current element is at the start or end of the array, only compare with one neighbor.
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Q1. Simple question like using map it can be solved easily
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Q2. Prime number to check
Ans. 
A prime number is a number greater than 1 that can only be divided by 1 and itself.
• A prime number is a number greater than 1.

• It can only be divided by 1 and itself.

• Examples: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29
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Q1. Palindrome all methods you can think
Ans. 
Various methods to check if a string is a palindrome
• Reverse the string and compare with the original string

• Iterate through the string from both ends towards the middle

• Use a stack to push the characters of the string and then pop them to compare with the original string
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Q1. Test cases for daily-use things Eg. Test cases for pen, chair, etc
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Q2. Puzzles Can be found on GFG
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Q1. Explain OOPS concepts with some code
Ans. 
OOPS concepts are fundamental to object-oriented programming and include inheritance, encapsulation, polymorphism, and abstraction.
• Inheritance: Allows a class to inherit properties and behavior from another class. Example: class Dog extends Animal.

• Encapsulation: Bundling data and methods that operate on the data into a single unit. Example: private variables and public methods.

• Polymorphism: Ability to present the same ...read more
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Q2. Explain each oops concept with clarity and write a class where you are implementing these.
Ans. 
Explanation of OOPs concepts with a class implementation
• Encapsulation: Class with private data members and public methods to access them

• Inheritance: Class extending another class to inherit its properties and methods

• Polymorphism: Class with multiple methods with the same name but different parameters

• Abstraction: Class with abstract methods that must be implemented by subclasses
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Q3. How is encapsulation different than abstraction?
Ans. 
Encapsulation is the concept of bundling data and methods that operate on the data into a single unit, while abstraction is the concept of hiding the implementation details and showing only the necessary features of an object.
• Encapsulation is about wrapping the data (variables) and methods (functions) that operate on the data into a single unit (class).

• Abstraction is about hiding the implementation details and showing ...read more
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Q4. What do you mean by run time polymorphism and how is it achieved?
Ans. 
Run time polymorphism is the ability of a method to do different things based on the object it is acting upon.
• Run time polymorphism is achieved through method overriding in object-oriented programming.

• It allows a subclass to provide a specific implementation of a method that is already provided by its superclass.

• The actual method that gets called is determined by the type of object at run time.

• Example: Animal class has...read more
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Q1. Explain your college major project.
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Q2. Did you face some challenges while working on the project and how did you handle it?
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Q3. How did you ensure that your project covers all cases?
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There were total three questions in coding test.

Q1. In this questions were asked related to core java
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