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Bounteous x Accolite Java Developer Interview Questions and Answers
9 Interview questions
A steady string contains characters B, D, U, and H, each appearing exactly n/4 times, where n is the string length.
Character Count: Count occurrences of B, D, U, and H in the string.
Length Check: Ensure the string length is divisible by 4 for steady condition.
Example 1: 'HBDU' has 1 of each character, steady since length is 4.
Example 2: 'BBUDHUDH' has 2 B's, 2 D's, 2 U's, and 2 H's, steady since length is 8.
Exampl...
Left rotating a binary tree involves shifting nodes to the left, changing the structure while maintaining the tree's properties.
Definition: A left rotation on a binary tree involves moving the right child of a node to become the new root of that subtree.
Example: For a node with value 10, if it has a right child 15, after left rotation, 15 becomes the new root, and 10 becomes the left child of 15.
Implementation: Th...
Find the length of the longest subsequence of contiguous integers in an array.
Sort the array
Iterate through the array and check for consecutive integers
Keep track of the longest subsequence found
Use flatMap and map to extract list of pincodes from Employee objects
Use flatMap to flatten the list of Addresses in each Employee object
Use map to iterate over the flattened list and extract the pincodes
Example: employeeList.stream().flatMap(emp -> emp.getAddresses().stream()).map(address -> address.getPincode()).collect(Collectors.toList())
Method overriding in Java with code example
Output will be 'Child class method' as the method in Child class overrides the method in Parent class
Method overriding is a feature that allows a subclass to provide a specific implementation of a method that is already provided by its superclass
The method in the subclass should have the same name, return type, and parameters as the method in the superclass
Identify and extract duplicate strings from an array using Java collections.
Use a HashMap to count occurrences of each string.
Iterate through the array and populate the HashMap.
Collect strings with a count greater than 1 as duplicates.
Example: For array ['apple', 'banana', 'apple', 'orange', 'banana'], duplicates are ['apple', 'banana'].
Use a nested loop to iterate through the array and check for the sum of squares of two elements equal to the square of a third element.
Iterate through the array using a nested loop to compare all possible combinations of elements.
Calculate the sum of squares of two elements and check if it equals the square of a third element.
Return the elements if a match is found, otherwise continue iterating.
Database pooling is a technique used to manage a pool of database connections for efficient resource utilization. HikariCP is a popular database connection pooling library in Java.
HikariCP is a high-performance database connection pooling library for Java applications.
It is known for its low latency and high throughput.
Configurations for HikariCP include settings such as maximum pool size, connection timeout, and ...
There are multiple ways to iterate over a HashMap in Java.
Using keySet() and values() methods
Using entrySet() method
Using forEach() method with lambda expression
Bounteous x Accolite Java Developer Interview Experiences
13 interviews found
Anonymous
I applied via Referral and was interviewed in Oct 2024. There was 1 interview round.
(3 Questions)
- Q1. Given an array of non-negative integers.Find the length of the longest subsequence such that elements in the subsequence are contiguous integers. The consecutive numbers can be in any order. Example n=7 nu...
- Ans.
Find the length of the longest subsequence of contiguous integers in an array.
Sort the array
Iterate through the array and check for consecutive integers
Keep track of the longest subsequence found
- Q2. Get list of pincodes from these objects Employee{ id Long, name String, Addresses : List } Addresses{ houseNo long, pindcode long, state String, country String, } Ans. Use flatMap to flatten and then use m...
- Q3. What is Database Pooling, Hikari and its configurations. Java 8 to current enchancements and current java version Factory and Builder design patterns to explain and code Project expalantion and details, Cr...
- Ans.
Database pooling is a technique used to manage a pool of database connections for efficient resource utilization. HikariCP is a popular database connection pooling library in Java.
HikariCP is a high-performance database connection pooling library for Java applications.
It is known for its low latency and high throughput.
Configurations for HikariCP include settings such as maximum pool size, connection timeout, and idle ...
Interview Preparation Tips
Skills evaluated in this interview
(5 Questions)
- Q1. Cycle sort based question
- Q2. Streams api, optional, lambda implementation
- Q3. Hashmap iteration ways
- Ans.
There are multiple ways to iterate over a HashMap in Java.
Using keySet() and values() methods
Using entrySet() method
Using forEach() method with lambda expression
- Q4. Method overriding based code question -> guess the output
- Q5. Write API to save data
Skills evaluated in this interview
Amar Kumar Nayak
I appeared for an interview in Mar 2025, where I was asked the following questions.
- Q1. Given a string composed of the characters B, D, U, and H, determine if the string is steady by checking whether each character appears exactly n/4 times, where n is the total length of the string. For exam...
- Ans.
A steady string contains characters B, D, U, and H, each appearing exactly n/4 times, where n is the string length.
Character Count: Count occurrences of B, D, U, and H in the string.
Length Check: Ensure the string length is divisible by 4 for steady condition.
Example 1: 'HBDU' has 1 of each character, steady since length is 4.
Example 2: 'BBUDHUDH' has 2 B's, 2 D's, 2 U's, and 2 H's, steady since length is 8.
Example 3: ...
- Q2. Prepare DS concept
Selected
I applied via Naukri.com and was interviewed in Jul 2024. There were 2 interview rounds.
(2 Questions)
- Q1. Java 8 feature & java 9
- Q2. Profiler concept internal work
Separate 0 and 1 and then store in the sme array
Interview Preparation Tips
Animesh Singh 4978
Selected
I appeared for an interview in Mar 2025, where I was asked the following questions.
- Q1. Left rotate a binary tree
- Q2. Asteroid collision
I appeared for an interview in Dec 2024.
(1 Question)
- Q1. Write whatever code you have done in your last company?
I applied via Naukri.com and was interviewed in Feb 2024. There were 3 interview rounds.
One coding question with 40-45 mcq
(2 Questions)
- Q1. 2 coding questions from array
- Q2. In given array find the sum a*a+b*b=c*c
- Ans.
Use a nested loop to iterate through the array and check for the sum of squares of two elements equal to the square of a third element.
Iterate through the array using a nested loop to compare all possible combinations of elements.
Calculate the sum of squares of two elements and check if it equals the square of a third element.
Return the elements if a match is found, otherwise continue iterating.
(1 Question)
- Q1. Core java questions, springboot, one string coding question
Skills evaluated in this interview
(1 Question)
- Q1. Java 8 Theory questions
I applied via Walk-in and was interviewed in Mar 2024. There was 1 interview round.
(2 Questions)
- Q1. Oops concept and other basic
- Q2. Coding round on java 8
Interview Preparation Tips
(2 Questions)
- Q1. Fetch all the duplicate values from an array
- Q2. Java 8 streams api
Skills evaluated in this interview
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