Freecharge Java Developer Interview Questions and Answers

Round duration - 90 mins
Round difficulty - Hard

There were questions related to DP and DFS.

 

Q1. 
Trapping Rain Water Problem Statement
You are given a long type array/list ARR of size N, representing an elevation map. The value ARR[i] denotes the elevation of the ith bar. Your task is to determine th...read more
Ans. 
Calculate the total amount of rainwater that can be trapped between given elevations in an array.
• Iterate through the array and calculate the maximum height on the left and right of each bar.

• Calculate the amount of water that can be trapped at each bar by taking the minimum of the maximum heights on the left and right.

• Sum up the trapped water at each bar to get the total trapped water for the entire array.
Answered by AI
Add your answer

Round duration - 60 mins
Round difficulty - Medium

At first, I was asked about the different projects that I have done so far. We had a detailed discussion on the same.
He also checked my OOP concepts

Q1. Can you describe the process of designing an LRU Cache from scratch during your System Design Round?
Ans. 
Designing an LRU Cache involves implementing a data structure that stores a fixed number of items and removes the least recently used item when full.
• Start by defining the data structure for the cache, typically using a combination of a hashmap and a doubly linked list.

• Implement methods for getting and setting key-value pairs in the cache.

• When a new item is added to the cache, check if it exceeds the maximum capacity. I...read more
Answered by AI
Add your answer
Q2. 
Reverse Linked List Problem Statement
Given a Singly Linked List of integers, your task is to reverse the Linked List by altering the links between the nodes.
Input:
The first line of input is an intege...read more
Ans. 
Reverse a singly linked list by altering the links between nodes.
• Iterate through the linked list and reverse the links between nodes

• Use three pointers to keep track of the current, previous, and next nodes

• Update the links between nodes to reverse the list

• Return the head of the reversed linked list
Answered by AI
Add your answer
Q3. 
Middle of a Linked List
You are given the head node of a singly linked list. Your task is to return a pointer pointing to the middle of the linked list.
If there is an odd number of elements, return the ...read more
Ans. 
Return the middle element of a singly linked list, or the one farther from the head if there are even elements.
• Traverse the linked list with two pointers, one moving twice as fast as the other

• When the fast pointer reaches the end, the slow pointer will be at the middle

• If there are even elements, return the one that is farther from the head node

• Handle edge cases like linked list of size 1 or empty list
Answered by AI
Add your answer

Round duration - 60 mins
Round difficulty - Medium

It is HR + Technical round
asked about the Behavioural questions and how you justify yourself in an argument .questions related to current technology.
They gave me feedback on how well I had performed so far and gave me suggestions on what more can I do to further improve myself.

Q1. Name gaurav Chauhan
Ans. My name is Gaurav Chauhan
Answered by burningeggplant
Add your answer
Q2. Paytm company 5 month working
Add your answer
Q3. My house is transport Nagar Alwar
Add your answer
Q4. Freecharge payment
Ans. Freecharge company me mana working ke h
Answered by burningeggplant
Add your answer
Q5. I am good workinig
Ans. 
I am dedicated to my work, consistently striving for excellence and fostering a collaborative team environment.
• I prioritize tasks effectively, ensuring deadlines are met without compromising quality. For example, I led a project that improved efficiency by 20%.

• I encourage open communication within the team, which helps in resolving issues quickly and promotes a positive work culture.

• I actively seek feedback from team m...read more
Answered by AI
Add your answer

Q1. Project discussion
Add your answer

Q1. What is the role of RJ45 in networking?
Ans. 
RJ45 is a type of connector commonly used for Ethernet networking.
• RJ45 connectors are used to connect computers, routers, switches, and other network devices to create a local area network (LAN).

• They are designed to transmit data using twisted pair cables.

• RJ45 connectors have 8 pins and are commonly used in Ethernet networks for both wired and wireless connections.
Answered by AI
Add your answer
Q2. What is the typical power consumption for domestic electrical lines?
Ans. 
The typical power consumption for domestic electrical lines varies depending on the size of the house and appliances used.
• Power consumption can range from 500 to 2000 watts per hour for an average household.

• Larger homes with more appliances may consume more power.

• Energy-efficient appliances can help reduce power consumption.

• Seasonal variations and usage patterns also impact power consumption.

• Electricity bills typically...read more
Answered by AI
Add your answer

Q1. What is your experience regarding job roles and tenure?
Add your answer
Q2. What is your availability for phone calls?
Ans. 
I am available for phone calls during regular business hours and can make myself available for urgent matters outside of those hours if needed.
• Available for phone calls during regular business hours

• Can make myself available for urgent matters outside of regular hours if needed
Answered by AI
Add your answer

Q1. Onbording experience
View 2 more answers
Q2. UPI knowledge and experience
View 1 more answer
Q3. Field work knowledge
View 1 more answer

Q1. Tell about yourself
Add your answer
Q2. Past experience
Ans. 
I have over 8 years of experience in project management, leading teams to deliver successful outcomes in various industries.
• Led a team of 10 in a software development project that increased efficiency by 30%.

• Implemented Agile methodologies, resulting in a 25% reduction in project delivery time.

• Managed cross-functional teams in a healthcare project, improving patient data management systems.

• Conducted regular training se...read more
Answered by AI
Add your answer
Q3. Last ctc salary
Ans. 
Discussing last CTC salary helps gauge expectations and market alignment for the Team Lead role.
• CTC stands for Cost to Company, which includes all benefits and allowances.

• For example, if my last CTC was $80,000, it included base salary, bonuses, and health benefits.

• It's important to consider the entire compensation package, not just the base salary.

• I believe in transparency regarding salary discussions to ensure mutual...read more
Answered by AI
Add your answer