L&T Technology Services Senior Software Engineer Interview Questions and Answers

Q1. What is the usage of Yield keyword
Ans. 
Yield keyword is used in Python to pause and resume a generator function.
• Yield keyword is used to return a value from a generator function and pause its execution.

• When the generator function is called again, it resumes from where it was paused.

• Yield can be used in a loop to generate a sequence of values without storing them all in memory.

• Example: def my_generator(): yield 1 yield 2 yield 3
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Q2. How will you n number of parmeters to a function where you n is variable number and you don't know the parameters that will be received
Ans. 
Use variadic arguments in C++ to handle variable number of parameters in a function
• Use variadic arguments in C++ to create a function that can accept any number of parameters

• Example: void myFunction(int firstParam, ...)

• Access the parameters using va_list and va_start macros

• Example: va_list args; va_start(args, firstParam); int nextParam = va_arg(args, int);

• End the argument list with va_end macro
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Q3. SQL join query and use aggregate function in it
Ans. 
SQL join query combines data from multiple tables based on a related column, and aggregate functions perform calculations on grouped data.
• Use JOIN keyword to combine data from multiple tables based on a related column

• Use aggregate functions like SUM, AVG, COUNT, etc. to perform calculations on grouped data

• Example: SELECT orders.order_id, SUM(order_details.quantity) FROM orders JOIN order_details ON orders.order_id = or...read more
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Q4. Software management framework that I am following, and different scrum terminologies
Ans. 
I follow the Agile software management framework and am familiar with various Scrum terminologies.
• Agile software management framework focuses on iterative development and collaboration.

• Scrum is a specific Agile framework that includes roles like Scrum Master and Product Owner.

• Some Scrum terminologies include Sprint, Daily Standup, Backlog, and User Stories.
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Q1. Java related and selenium related questions
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General aptitude, C and C++ questions, OOPS

Q1. Memory allocation
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Q2. OOPS concepts, previous projects
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Q1. Reverse the Linked List?
Ans. 
Reverse a linked list by changing the direction of pointers.
• Start with three pointers: current, previous, and next.

• Iterate through the linked list, updating pointers to reverse the direction.

• Return the new head of the reversed linked list.
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Q2. Reverse a string?
Ans. 
To reverse a string, iterate through the characters and swap the characters from start to end.
• Iterate through the characters of the string

• Swap the characters from start to end until reaching the middle of the string

• Return the reversed string
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