Scan-IT Senior Application Developer Interview Questions and Answers

Their are 30 questions which one has to done in 30 mins

Q1. Q1) About the project you have done
Add your answer
Q2. Q2) some technical questions related to core Java
Add your answer

Q1. Tell me about yourself
Ans. 
I am a dedicated and experienced professional with a strong background in project management and team leadership.
• Over 8 years of experience in project management

• Successfully led cross-functional teams to deliver projects on time and within budget

• Strong communication and interpersonal skills

• Proven track record of driving results and exceeding goals
Answered by AI
Add your answer
Q2. Why should we hire you
Ans. 
I have a proven track record of delivering exceptional results and possess the skills and experience necessary to excel in this role.
• Proven track record of exceeding performance targets

• Strong communication and leadership skills

• Extensive experience in the industry

• Ability to work effectively in a team environment

• Passion for continuous learning and professional development
Answered by AI
Add your answer
Q3. Why should we buy your product
Ans. 
Our product offers innovative solutions to streamline processes, increase efficiency, and drive growth.
• Our product has been proven to save companies time and money by automating repetitive tasks.

• We provide excellent customer support and training to ensure successful implementation.

• Our product is constantly updated with new features and improvements based on customer feedback.

• Competitive pricing compared to similar prod...read more
Answered by AI
Add your answer

Round duration - 90 minutes
Round difficulty - Easy

Timing was 10:00 AM. Platform was good.

Q1. 
Subarray With Given Sum Problem Statement
Given an array ARR of N integers and an integer S, determine if there exists a contiguous subarray within the array with a sum equal to S. If such a subarray exis...read more
Ans. 
Given an array of integers, find a subarray with a given sum S.
• Iterate through the array while keeping track of the current sum and start index.

• Use a hashmap to store the sum and its corresponding index.

• If the current sum - S is found in the hashmap, a subarray with sum S exists.

• Return the start index and current index as the end index.
Answered by AI
Add your answer
Q2. 
Remove Consecutive Duplicates Problem Statement
Given a string S, your task is to recursively remove all consecutive duplicate characters from the string.
Input:
String S
Output:
Output string
Constr...read more
Ans. 
Recursively remove consecutive duplicate characters from a string.
• Use recursion to check if the current character is the same as the next character, if so skip the next character

• Base case: if string length is 1, return the string

• Example: Input: 'aabbc' Output: 'abc'
Answered by AI
Add your answer

There was an OA on hackerearth of an hour. In that there were 20 MCQs and two DSA questions easy to medium on Heap, Hashmap and Subarray

Q1. Asked about previous worked project in last company
Add your answer
Q2. Asked one medium DSA question (DNA sequencing) and asked to design some schema
Add your answer
Q3. Asked one puzzle If there are 1000 bottles and one is poisonous, a rat will diw after one hour of drinking and you have only one hour to find out which bottle is poisonous, How many minimum rats you need ?
Add your answer

Q1. What are oops concepts in java, explain real time scenario
Ans. 
OOPs concepts in Java include inheritance, polymorphism, encapsulation, and abstraction.
• Inheritance allows a subclass to inherit properties and methods from a superclass.

• Polymorphism allows objects to take on multiple forms and behave differently based on their context.

• Encapsulation hides the implementation details of an object and only exposes necessary information.

• Abstraction allows for the creation of abstract class...read more
Answered by AI
View 1 more answer
Q2. Uses of interface, inheritance
Ans. 
Interfaces define contracts for behavior, while inheritance allows for code reuse and polymorphism.
• Interfaces allow for loose coupling and abstraction, enabling multiple implementations of the same behavior.

• Inheritance allows for code reuse and extension of existing classes, reducing code duplication.

• Polymorphism allows objects of different classes to be treated as if they were of the same class, simplifying code and i
Answered by AI
Add your answer
Q3. SQL query for join of tables
Ans. 
SQL query for joining tables
• Use JOIN keyword to combine two or more tables based on a related column

• Specify the columns to be selected using SELECT keyword

• Use ON keyword to specify the condition for joining the tables

• Different types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL OUTER JOIN
Answered by AI
Add your answer
Q4. Java concepts used in your project
Ans. 
Used Java concepts such as inheritance, polymorphism, and exception handling in my project.
• Implemented inheritance to create a base class and derived classes with specific functionalities.

• Utilized polymorphism to allow objects of different classes to be treated as if they were of the same class.

• Implemented exception handling to handle errors and prevent program crashes.

• Used interfaces to define a set of methods that a ...read more
Answered by AI
Add your answer
Q5. Overloading vs overriding, practical uses
Ans. 
Overloading is having multiple methods with the same name but different parameters. Overriding is having a method in a subclass with the same name and parameters as a method in the superclass.
• Overloading is used to provide different ways to call a method with different parameters

• Overriding is used to provide a specific implementation of a method in a subclass

• Overloading is resolved at compile-time while overriding is r...read more
Answered by AI
Add your answer

Before Aptitude Test, There was a telephonic interview round in which they test your communication and ask questions about your education and projects. You just have to show your confidence to pass this round. After that, the aptitude test was quite easy. There are 15 questions all are doable in just 15 to 20 minutes of time span.

After that, The coding round takes place in which they provide you with a device with an online compiler of your preferred programming language and ask you to solve 4 questions without using any built-in function. The questions are based on Linked Lists, Stacks, Arrays, etc. You have to do it all manually. This round lasts up to 1 hour.

Q1. The technical round takes place in which they ask different questions from your coding round, a few concept-based ones, and also a few questions to test your thinking and problem-solving abilities like the...read more
Add your answer

Easy aptitude test containing mathematics and logical questions

4 leetcode easy to medium level

Q1. Questions on project and tech stack.
Add your answer

Q1. Find the second most occurrence if string in JavaScript
Ans. 
Find the second most occurrence of a string in an array of strings in JavaScript.
• Create a map to store the count of each string in the array

• Sort the map by values in descending order to find the most occurrence

• Return the key of the second element in the sorted map
Answered by AI
Add your answer