L&T Finance Junior Software Developer Interview Questions and Answers

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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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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Basics of DSA, Computer Fundamentals etc

Q1. Tell me about your project
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Hackerrank test link

System design interview

Maths
Logical
English
C

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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Mcq related to dsa ,oops

Q1. Just basic oops questions about polymorphism,inheritance
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Basic question of easy-medium difficulty

Q1. Simple problems on Data structure and algorithm.
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