Nykaa Sdet Engineer Interview Questions, Process, and Tips

There were total three questions in coding test.

Q1. In this questions were asked related to core java
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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.
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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?
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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?
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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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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
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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
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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. Difference between Severity, Priority and criticality?
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Severity, Priority, and Criticality are different aspects of issue management in software testing.
• Severity refers to the impact of a defect on the system's functionality.

• Priority indicates the order in which defects should be fixed based on business needs.

• Criticality combines severity and priority to determine the overall importance of a defect.

• For example, a defect causing a system crash would have high severity, high...read more
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Q2. What id Equivalence partitioning?
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Equivalence partitioning is a software testing technique where input data is divided into partitions and only one value from each partition is tested.
• Input data is divided into groups or partitions based on similar characteristics

• One value from each partition is selected as a representative for testing

• Helps in reducing the number of test cases while ensuring maximum coverage

• Example: Testing a login form with valid, inv
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Q3. What id BackWord Compatibility?
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Backward compatibility refers to the ability of a system to accept input intended for an older version of the system.
• Allows newer versions of software to work with data or systems from older versions

• Ensures that changes in the software do not break compatibility with existing data or systems

• Helps in smooth transition and adoption of new versions without disrupting existing processes
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Q4. What is Paradox in testing ?
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A paradox in testing refers to a situation where a test case both passes and fails at the same time.
• Paradox in testing can occur when a test case has conflicting requirements or conditions.

• It can also happen when there are errors in the test setup or execution that lead to unexpected results.

• For example, a test case may pass when run individually but fail when run as part of a test suite due to dependencies.

• Identifying...read more
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Q5. What id post put and patch?
Ans. 
PUT and PATCH are HTTP methods used for updating resources in RESTful APIs.
• PUT is used to update or replace an existing resource entirely

• PATCH is used to partially update an existing resource

• PUT is idempotent, meaning multiple identical requests will have the same effect as a single request

• PATCH is not idempotent, meaning multiple identical requests may have different effects
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Java, coding , programming etc.

Q1. Personal details, hobby,life balance, attitude, work efficiency.
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Q2. Some code and programming questions.
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Algorithm and data structures

Q1. Algorithm and data structures
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Q2. How does linked list works in data structures
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A linked list is a linear data structure where each element is a separate object with a reference to the next element.
• Each element in a linked list is called a node

• Nodes are connected using pointers or references

• Linked lists can be singly linked (each node points to the next) or doubly linked (each node points to the next and previous)
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DSA
1hour
Hackerrank

Q1. Resume based + oops
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