SMC Global Securities Software Engineer Interview Questions and Answers

Q1. Can you explain the difference between a stack and a queue and provide a real-world example where each would be used.
Ans. 
A stack is a Last In First Out (LIFO) data structure, while a queue is a First In First Out (FIFO) data structure.
• Stack: LIFO - Last In First Out. Example: browser history where the last page visited is the first to be accessed.

• Queue: FIFO - First In First Out. Example: a line at a grocery store where the first person in line is the first to be served.
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Q2. Given an array of integers, write a function to find the two numbers that add up to a specific target. How would you optimize this solution?
Ans. 
Function to find two numbers in array that add up to target. Optimize solution.
• Use a hash map to store each number and its index as you iterate through the array.

• For each number, check if the difference between the target and the number exists in the hash map.

• Return the indices of the two numbers that add up to the target.
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Q1. Core java concepts,Sql queries,2 coding question based on arrays and string
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Q2. Reverse the string
Ans. 
Reverse a given string
• Use a loop to iterate through the characters of the string

• Swap the characters from start to end to reverse the string

• Return the reversed string
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Q3. Find third highest salary from a employee table
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Q1. Advance java and project related
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Q2. Springboot and spring diff
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Q3. Springboot annotations used in your project
Ans. 
Some common Springboot annotations used in projects are @RestController, @Autowired, @RequestMapping, @Service, @Component, @Repository.
• @RestController - Used to define RESTful web services.

• @Autowired - Used for automatic dependency injection.

• @RequestMapping - Used to map web requests to specific handler methods.

• @Service - Used to indicate that a class is a service.

• @Component - Used to indicate that a class is a Spring...read more
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Q4. Springboot dependencies
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Q1. Explain collection framework and uses
Ans. 
Collection framework is a set of interfaces and classes in Java that provide a way to store and manipulate groups of objects.
• Provides interfaces like List, Set, Map for storing collections of objects

• Includes classes like ArrayList, HashSet, HashMap for implementing these interfaces

• Allows for easy manipulation, sorting, searching, and iteration of collections

• Used in various applications like data processing, data storag
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Q2. Explain springboot and it's annotation
Ans. 
Spring Boot is a Java-based framework used for creating standalone, production-grade Spring-based applications.
• Spring Boot simplifies the process of creating Spring applications by providing defaults for configuration and eliminating the need for XML configuration files.

• Annotations in Spring Boot are used to simplify the configuration of Spring applications by providing metadata about the application.

• Examples of annota...read more
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Q1. Unique Paths (2d-dp)
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Q2. Flip any rows or columns at any time to make the sum of gird cells ofa provided square in a matrix should be minimum
Ans. 
To minimize the sum of grid cells in a square matrix, flip rows or columns as needed.
• Identify the rows or columns with the highest values and consider flipping them to reduce the sum

• Try different combinations of flipping rows and columns to find the minimum sum

• Consider using dynamic programming or backtracking to efficiently explore all possible combinations
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Q1. Transformer is a static device and transfer power one from to another form current
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Q2. Current transformer is a series conection and step up to high voltage
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Q3. There are three function of smart grid electrical protection isolation and control
Ans. 
The three functions of smart grid electrical protection isolation and control are fault detection, fault isolation, and service restoration.
• Fault detection involves identifying any issues in the electrical system.

• Fault isolation involves isolating the faulty component to prevent further damage.

• Service restoration involves restoring power to the affected area as quickly as possible.

• Examples of smart grid technologies th...read more
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Q4. Current is a flow in wire
Ans. 
Yes, current is the flow of electric charge in a wire.
• Current is measured in amperes (A).

• It is caused by the movement of electrons in a conductor.

• The direction of current flow is from positive to negative.

• Current can be either direct current (DC) or alternating current (AC).
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Q5. Faraday law is a electro magnetic field induction working
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Q6. Ohm's law is current between directly proportional voltage
Ans. 
Ohm's law states that current is directly proportional to voltage.
• Current increases as voltage increases

• Resistance remains constant

• Can be expressed as I = V/R
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SQP, PRS, SRT, TUV, is right answer VXW

Q1. Which company are you interest ,?
Ans. Naukri company in interest
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Q1. Which company are best company
Ans. Naukri company is beat company
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Easy to attempt and creak the test

Q1. About yourself, c basic questions, about your project
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Q1. About yourself, about company, about location
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Q1. Background History
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Q2. Talk about your side projects and github repo
Ans. 
I have worked on various side projects including a personal website and a mobile app for tracking fitness goals.
• Developed a personal website using HTML, CSS, and JavaScript to showcase my projects and skills.

• Created a mobile app using React Native to track fitness goals and provide workout routines.

• Contributed to open-source projects on GitHub to improve my coding skills and collaborate with other developers.
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Basic QR Questions that includes logics, and puzzles

Hackerrank questions, 2 easy , 2 medium