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FirstRand Services Backend Java Developer Interview Questions and Answers
FirstRand Services Backend Java Developer Interview Experiences
1 interview found
Anonymous
I applied via Naukri.com and was interviewed in Oct 2024. There was 1 interview round.
(2 Questions)
- Q1. What is the internal working of Hashmap?
- Ans.
HashMap is a data structure that stores key-value pairs and uses hashing to efficiently retrieve values based on keys.
HashMap internally uses an array of linked lists to store key-value pairs.
When a key-value pair is added, the key is hashed to determine the index in the array where the pair will be stored.
If multiple keys hash to the same index, a linked list is used to handle collisions.
Retrieving a value involves ha...
- Q2. Design singleton class
- Ans.
A singleton class is a class that can only have one instance created and provides a global point of access to that instance.
Ensure the class has a private constructor to prevent external instantiation.
Provide a static method to access the single instance of the class.
Use lazy initialization to create the instance only when needed.
Consider thread safety if the singleton will be accessed by multiple threads.
Skills evaluated in this interview
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Interview questions from similar companies
I applied via Campus Placement and was interviewed before Jun 2020. There were 3 interview rounds.
Interview Questionnaire
2 Questions
- Q1. Simple program
- Q2. I wrote a simple program in C
Interview Preparation Tips
I applied via Company Website and was interviewed in Oct 2018. There was 0 interview round.
Interview Preparation Tips
You need to stay calm and should apply presence of mind. Please go through the job description thoroughly word-by-word and recheck your resume to ensure that you are a best-fit for the position.
Skills: Communication, Body Language, Problem Solving, Leadership, Presentation Skills
Duration: <1 week
I applied via Naukri.com and was interviewed before Oct 2019. There were 3 interview rounds.
Interview Questionnaire
1 Question
- Q1. What technical challenges have you faced in your work till now and how did you overcome it?
Interview Preparation Tips
I applied via tcs and was interviewed before Jun 2020. There were 4 interview rounds.
Interview Questionnaire
1 Question
- Q1. Java based
Interview Preparation Tips
I appeared for an interview before Nov 2020.
(2 Questions)
Round duration - 90 minutes
Round difficulty - Medium
Timing was around 10am
It was quite a normal online examination kind of environment
People from the company were there to invigilate
All were quite nice and helpful in case the exam got stuck
- Q1.
Ninja and Alien Language Order Problem
An alien dropped its dictionary while visiting Earth. The Ninja wants to determine the order of characters used in the alien language, based on the given list of wor...
- Ans.
Determine the order of characters in an alien language based on a list of words.
Create a graph data structure to represent the relationships between characters in the words.
Perform a topological sort on the graph to find the order of characters.
Return the smallest lexicographical order of characters as the result.
- Q2.
Check Duplicate Within K Distance
Given an array of integers
arrof sizeNand an integerK, determine if there are any duplicate elements within a distance ofKfrom each other in the array. Return"true... - Ans.
Check if there are any duplicate elements within a distance of K from each other in the array.
Iterate through the array and keep track of the indices of elements using a hashmap.
For each element, check if it already exists in the hashmap within distance K.
Return true if a duplicate is found within distance K, otherwise return false.
(1 Question)
Round duration - 30 minutes
Round difficulty - Medium
Timing was 2pm when it started
Interviewer was polite
- Q1.
Kth Largest Element Problem Statement
Ninja enjoys working with numbers, and Alice challenges him to find the Kth largest value from a given list of numbers.
Input:
The first line contains an integer 'T... - Ans.
The task is to find the Kth largest element in a given list of numbers for each test case.
Read the number of test cases 'T'
For each test case, read the number of elements 'N' and the Kth largest number to find 'K'
Sort the array in descending order and output the Kth element
Round duration - 20 minutes
Round difficulty - Easy
Timing was 9 am onwards
Interviewer was good enough
Interview Preparation Tips
Tip 1 : Focus on specialization of any one skill and keep a basic knowledge of all the skills you mention in your resume
Tip 2 : Gain confidence in presenting yourself by practicing well before
Tip 3 : Gain a basic knowledge of the company you go for selection
Tip 1 : Resume should be simple and precise but pretty smart to cover your skills
Tip 2 : Mention what you really know,no false things
Skills evaluated in this interview
I applied via Walk-in and was interviewed before Sep 2019. There were 3 interview rounds.
Interview Questionnaire
1 Question
- Q1. 1.Technical Ques(OOPS Concept)and 2. Area of Interest 3. About Company 4. more
Interview Preparation Tips
Sharing some tips while facing Interview Assessment or GD Round Assessment.
1. Be Confident always give the answer what they ask for, Never connect your answer with different topic.
2. Always go through Company Portal or wiki about their Operation & Function.
3. Always have positive vibes that whatever yes or No, You will surely gain something.
All the Best..!!
I applied via Recruitment Consultant and was interviewed before Jun 2020. There were 3 interview rounds.
Interview Questionnaire
1 Question
- Q1. DBMS questions
Interview Preparation Tips
I applied via Campus Placement and was interviewed before Nov 2019. There were 3 interview rounds.
Interview Questionnaire
3 Questions
- Q1. What is need for now a day software developer
- Ans.
Software developers need to have strong technical skills, problem-solving abilities, and communication skills.
Strong technical skills in programming languages, databases, and software development tools
Problem-solving abilities to identify and solve complex software issues
Communication skills to work effectively with team members and clients
Adaptability to learn new technologies and keep up with industry trends
Creativit...
- Q2. Tell about your engineering experience
- Q3. Tell about software technology
- Ans.
Software technology refers to the tools, languages, frameworks, and methodologies used to develop software applications.
Software technology includes programming languages such as Java, Python, and C++
Frameworks like React, Angular, and Vue.js are used for building web applications
Methodologies like Agile and Waterfall are used for project management
Tools like Git, JIRA, and Jenkins are used for version control, issue t...
Interview Preparation Tips
Skills evaluated in this interview
I applied via Naukri.com and was interviewed before Jan 2020. There was 1 interview round.
Interview Questionnaire
2 Questions
- Q1. Multiple constructor we can defined in a single class
- Ans.
Yes, multiple constructors can be defined in a single class.
Constructors are used to initialize objects of a class.
Multiple constructors can have different parameters.
Overloading is used to differentiate between constructors.
Example: public MyClass(int x) { } and public MyClass(int x, int y) { }
- Q2. What is the object in the python
- Ans.
Object is a fundamental concept in Python, representing a data structure that has properties and methods.
Objects are instances of classes
Objects have attributes and methods
Objects can be created using constructors
Objects can be passed as arguments to functions
Objects can be used to implement object-oriented programming
Examples of objects include lists, dictionaries, and strings
Skills evaluated in this interview
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FirstRand Services Backend Java Developer Interview Process
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