Qmex Steel Construction Software Developer Interview Questions and Answers

MCQ’s only, DSA and other MCQ 1 hour

Q1. Project related questions
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Q2. Coding problem in any basic programming language
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Q1. General HR and salary discussions
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Q2. Location and other related queries
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Q1. Difference between linked list and array list
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Linked list is a data structure where elements are stored in nodes with pointers to the next node. Array list is a dynamic array that can grow or shrink in size.
• Linked list allows for efficient insertion and deletion of elements anywhere in the list.

• Array list provides fast access to elements using index, but slower insertion and deletion compared to linked list.

• Example: Linked list - 1 -> 2 -> 3 -> 4 -> 5, Array list
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Q2. Difference between @controller and @ Rest controller
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The @Controller annotation is used for traditional MVC controllers, while @RestController is used for RESTful web services.
• The @Controller annotation is used to define a class as a Spring MVC controller, which can handle HTTP requests and return a view.

• The @RestController annotation is used to define a class as a controller for RESTful web services, which can handle HTTP requests and return data in JSON or XML format.

• T...read more
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Q1. String reverse
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Q2. Dsa linked lists
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Q3. Linked lists reverse
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Q4. Map unique elements
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Map unique elements in an array of strings
• Create a map to store unique elements

• Iterate through the array and add each element to the map as a key

• Retrieve the keys of the map to get the unique elements
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Q5. Sets find elements in set
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Sets are data structures that store unique elements and can be used to efficiently find elements in the set.
• Sets do not allow duplicate elements, so each element in a set is unique.

• To find elements in a set, you can use the 'has' method to check if a specific element is present in the set.

• Sets are commonly used in programming for tasks like removing duplicates from a list or checking for the presence of specific elemen
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30 questions test of aptitide online

Q1. Explain microprocessor
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A microprocessor is a small electronic device that functions as the central processing unit of a computer.
• Microprocessors are made up of millions of transistors that perform calculations and execute instructions.

• They are commonly found in computers, smartphones, and other electronic devices.

• Examples of popular microprocessors include Intel's Core series and AMD's Ryzen series.

• Microprocessors process data and perform ta...read more
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Q2. What do you mean by iot
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IoT stands for Internet of Things, which refers to the network of physical devices connected to the internet, allowing them to collect and exchange data.
• IoT involves connecting everyday objects to the internet to enable them to send and receive data.

• Examples of IoT devices include smart thermostats, wearable fitness trackers, and connected appliances.

• IoT technology enables automation, remote monitoring, and data analyt
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90 min, DSA, hacker platform 3 question

Q1. 2D DP WITH SPACE OPTIMIZATION
Ans. 
2D DP with space optimization is a technique to reduce memory usage while solving dynamic programming problems.
• Use a 1D array instead of a 2D array to store values in dynamic programming problems.

• Update the values in the 1D array based on the dependencies between subproblems.

• Example: Solving the longest common subsequence problem using 2D DP with space optimization.
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Q2. GRAPH WITH BFS ON TREE
Ans. 
Breadth First Search (BFS) on a tree involves visiting nodes level by level starting from the root.
• Start by visiting the root node, then visit all its children before moving on to the next level

• Use a queue data structure to keep track of nodes to visit next

• Repeat the process until all nodes have been visited
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Q1. Intro your self in detail
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I am a software developer with 5 years of experience in Java, Python, and SQL.
• 5 years of experience in Java, Python, and SQL

• Strong problem-solving skills

• Experience working in Agile development environment

• Bachelor's degree in Computer Science from XYZ University
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Q2. Explain about your projects
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Q1. Explain Java oops concepts, exceptions, and java 8 features
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Java OOPs concepts include inheritance, polymorphism, encapsulation, and abstraction. Exceptions are used for error handling. Java 8 features include lambda expressions, streams, and functional interfaces.
• OOPs concepts: Inheritance (e.g. class B extends class A), Polymorphism (e.g. method overloading, overriding), Encapsulation (e.g. private variables with public methods), Abstraction (e.g. abstract classes, interfaces...read more
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Aptitude questions basic for 1 hour

Dsa basic to medium questions

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Q1. What is android?
Ans. 
Android is a mobile operating system developed by Google, based on the Linux kernel.
• Developed by Google

• Based on Linux kernel

• Used in smartphones, tablets, smartwatches, etc.
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Q2. What is kotlin?
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Kotlin is a statically typed programming language that runs on the Java Virtual Machine (JVM) and can also be compiled to JavaScript source code.
• Kotlin is interoperable with Java, meaning you can use Java libraries and frameworks in Kotlin code.

• Kotlin is concise, reducing boilerplate code compared to Java.

• Kotlin supports functional programming features like higher-order functions and lambdas.

• Kotlin is officially suppor
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Q1. Whats is current ctc?
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Current CTC refers to the current salary package of the candidate.
• Current CTC is the total amount of money a candidate is currently earning from their job.

• It includes the basic salary, bonuses, incentives, and any other monetary benefits.

• Candidates may choose to disclose their current CTC during job interviews to negotiate a better salary package.

• Example: If a candidate's current CTC is $50,000 per year, they may expec
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Q2. What is expected ctc?
Ans. 
Expected CTC is the salary range that the candidate is looking for in a new job.
• Research the average salary for Software Developers in your area

• Consider your experience, skills, and the company's size and industry

• Be prepared to negotiate based on the job responsibilities and benefits offered
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