ABCL Software Developer Interview Questions, Process, and Tips

Q1. What is closure
Ans. 
A closure is a function that has access to its own scope, the scope in which it was defined, and the global scope.
• A closure is created when a function is defined inside another function.

• The inner function has access to the variables and parameters of the outer function, even after the outer function has finished executing.

• Closures are useful for creating private variables and functions in JavaScript.

• They can also be us...read more
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Q2. What is Encapsulation
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Encapsulation is the process of hiding internal details and providing a public interface for accessing and manipulating data.
• Encapsulation bundles data and methods together into a single unit.

• It helps in achieving data abstraction and data hiding.

• By encapsulating data, we can control access to it and prevent unauthorized modifications.

• Encapsulation promotes code reusability and maintainability.

• Example: A class in objec...read more
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Q3. What is Inheritance
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Inheritance is a concept in object-oriented programming where a class inherits properties and behaviors from another class.
• Inheritance allows for code reuse and promotes the concept of hierarchy.

• The class that is being inherited from is called the superclass or base class.

• The class that inherits from the superclass is called the subclass or derived class.

• The subclass can access the public and protected members of the s...read more
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Q4. What is Abstraction
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Abstraction is the process of simplifying complex systems by focusing on essential details.
• Abstraction involves hiding unnecessary details and exposing only relevant information.

• It allows developers to create models or representations that capture the essential aspects of a system.

• Abstraction helps in managing complexity, improving code reusability, and enhancing maintainability.

• For example, in object-oriented programm...read more
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Q5. What is Polymorphism
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Polymorphism is the ability of an object to take on many forms. It allows objects of different classes to be treated as the same type.
• Polymorphism is a fundamental concept in object-oriented programming.

• It enables code reusability and flexibility.

• Polymorphism can be achieved through method overriding and method overloading.

• Example: A parent class Animal can have multiple child classes like Dog, Cat, and Bird. They can ...read more
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Apt + coding questions, medium difficulty

Q1. Basics qs on oops and known programming language
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Q1. In-depth of oops and live coding questions
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Q1. Basics qs like y and what
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Maths
Logical
English
C

Q1. C#,Mvc core,SQL server,vue js,
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Q1. Salary discussion
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1st Round is Up to an hr in that we have to perform Coding as per the test provided & also SQL round involve in it we have to show as output as per the test is concerned to provide valid outputs.

2nd round was an aptitude test of 90 mins it was like 100 Questions we have to solve and submit that it involved Logical Reasoning, Mathematical problems, Word Problems, etc.

Q1. Tell me about your projects and what you have done in your previous company.
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Q2. On basis of Projects, the Technical questions that were asked, and also other situations given on that basis what I will do in the Logical process need to explain the steps.
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Q3. Basics Of Java OOPs Concepts Questions
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Round duration - 60 minutes
Round difficulty - Easy

I had one interview for approx. an hour, it includes both Technical and HR round, well mostly technical. Interview starts with tell me something about yourself. Asked in detailed about algorithms/web based projects mentioned in CV, make sure that whatever you have written you have complete knowledge about it. Asked to code few basic algorithms questions. Do mention about small project if you have done related to web development.
If interviewer says if you want to ask any question, its always better to ask one or two question.

Q1. Can you introduce yourself?
Ans. 
Prepare tell me something about yourself way before your placement starts, a month or so. Write it down on a piece of paper, keep it to less than 120 sec, 90-100 sec is good. 
A basic format would be like, your introduction, schooling (doesn't matter but if you have something good to say about), give an overview of your project/work experience mentioned in your CV. 
You should cover all the necessary and import...read more
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Q2. What is a Binary Search Tree (BST)?
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Binary Search Tree is a node-based binary tree data structure which has the following properties:
The left subtree of a node contains only nodes with keys lesser than the node’s key.
The right subtree of a node contains only nodes with keys greater than the node’s key.
The left and right subtree each must also be a binary search tree.
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Q3. 
Binary Search Tree Insertion
Given the root node of a binary search tree and a positive integer, you need to insert a new node with the given value into the BST so that the resulting tree maintains the pr...read more
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A new key is always inserted at the leaf. We start searching a key from the root until we hit a leaf node. Once a leaf node is found, the new node is added as a child of the leaf node.
Pseudocode:
1. If tree is empty (no root), create a node with key k as root; return .
2. Set CurrNode = RootNode.
3. If k == CurrNode.key, return since the node is already present. 
4. If k< CurrNode.key ... /* key must go in left sub...read more
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Q4. 
Delete Node in Binary Search Tree Problem Statement
You are provided with a Binary Search Tree (BST) containing 'N' nodes with integer data. Your task is to remove a given node from this BST.
A BST is a ...read more
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Three cases arise in deleting a node :
1.Node to be deleted is the leaf: Simply remove it from the tree. 
2. Node to be deleted has only one child: Copy the child to the node and delete the child node. 
3.Node to be deleted has two children: Find inorder successor of the node. Copy contents of the inorder successor to the node and delete the inorder successor.

Pseudocode :
if node is null ->
return the node (eit...read more
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Q5. 
Clone Linked List with Random Pointer Problem Statement
Given a linked list where each node has two pointers: one pointing to the next node and another which can point randomly to any node in the list or ...read more
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Algorithm :
1. Consider l1 as a node on the 1st list and l2 as the corresponding node on 2nd list.
2. Build the 2nd list by creating a new node for each node in 1st list. While doing so, insert each new node after it's corresponding node in the 1st list.
3. The new head is the 2nd node as that was the first inserted node.
4. Fix the random pointers in the 2nd list: (Remember that l1->next is actually l2) l2->random w...read more
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