L&T Finance Senior Software Engineer Interview Questions and Answers

Hackerrank test link

System design interview

Asked to hit an API using postman or any other tool.

Q1. Two coding questions of easy to medium level.
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Q1. Got selected without questions
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Discussion on Oops and asked to implement linked list and then asked to modify it to fit for a binary tree.

One qsts related to algos was asked too which I don't remember

Q1. Formal introduction of ourselves . Followed by few qsts on family and why IIFL
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Q1. 1)Project related,
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Q2. What is the Polymorphism?
Ans. 
Polymorphism is the ability of a function or method to behave differently based on the object it is acting upon.
• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• There are two types of polymorphism: compile-time (method overloading) and runtime (method overriding).

• Example: Inheritance in object-oriented programming languages like Java allows for polymorphism.
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Q3. What is RestController?
Ans. 
RestController is a class in Spring framework used to handle HTTP requests and return responses as JSON or XML.
• Handles HTTP requests in Spring framework

• Returns responses as JSON or XML

• Annotate a class with @RestController to define it as a RestController

• Example: @RestController public class UserController {}
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Find the number of occurrences of each element in the given ArrayList

Q1. Discussion with hr like reason to switch.
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Q1. Jdbc , Spring , Collection in java
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Q2. Final vs finally . Explain
Ans. 
Final and finally are two different words with different meanings.
• Final is an adjective that means last or ultimate, as in final exam or final decision.

• Finally is an adverb that means at last or in the end, as in finally, we reached our destination.

• Final is used to describe something that is definitive or conclusive, while finally is used to describe the end of a process or event.

• Examples: The final score of the game w...read more
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Q3. Abstraction and encapsulation
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Q1. MSO365, Outlook, zscaler, McAfee DLP, Encryption, bit locker encryption, end user support, hardware and software installation & Support, Technical issue resolved by quickly, Asset management, camera knowle...read more
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Q1. Customer support and manage the remote user and resolve issue quickly
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Maths
Logical
English
C

Coding test with questions on aptitude and coding problem solving with 15 test cases

Q1. Rotation of array
Ans. 
Rotate an array of strings by a specified number of positions.
• Create a new array and copy elements from original array based on rotation index.

• Use modulo operator to handle cases where rotation index exceeds array length.

• Handle edge cases like empty array or negative rotation index.

• Example: Original array ['a', 'b', 'c', 'd', 'e'] rotated by 2 positions becomes ['c', 'd', 'e', 'a', 'b'].
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Q2. Sql query for 2
Ans. 
SQL query to retrieve data from 2 tables using a join condition.
• Use JOIN keyword to combine data from 2 tables based on a related column

• Specify the columns you want to retrieve using SELECT statement

• Add the table names and join condition in the FROM clause
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