Care Health Insurance Front end Developer Interview Questions and Answers

Round duration - 45 minutes
Round difficulty - Medium

I applied thorough LinkedIn and got a call from HR for the interview.
I went to their Noida Office.
First round was mainly focused on Javascript fundamentals.
Interviewer was also friendly.

Round duration - 1 hour
Round difficulty - Medium

Second round was after 15 minutes of the first round. The focus of this round was DS & Algorithms.

Q1. 
Find Subarray with Given Sum
Given an array ARR of N integers and an integer S, determine if there exists a subarray (of positive length) within the given array such that the sum of its elements equals S....read more
Ans. 
Given an array and a target sum, find a subarray that sums up to the target sum.
• Iterate through the array while keeping track of the running sum and the starting index of the subarray.

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

• If the running sum - target sum is found in the hashmap, it means a subarray with the target sum exists.

• Return the starting and ending indices of the subarray or [-1, -1]
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Q2. 
Minimum Number of Platforms Required
You are provided with two arrays, AT and DT, representing the arrival and departure times of all trains arriving at a railway station.
Your task is to determine the m...read more
Ans. 
This question asks to find the minimum number of platforms required at a railway station so that no train needs to wait.
• Sort the arrival and departure times arrays in ascending order.

• Initialize a variable 'platforms' to 1 and 'maxPlatforms' to 1.

• Iterate through the arrival and departure times arrays simultaneously.

• If the current arrival time is less than or equal to the current departure time, increment 'platforms'.

• If ...read more
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Round duration - 30 minutes
Round difficulty - Easy

Q1. What JavaScript questions did he ask you during the managerial round, and can you describe the work culture of his team?
Ans. 
The interviewer asked about JavaScript questions and the work culture of the team during the managerial round.
• JavaScript questions related to closures, prototypes, event handling, and asynchronous programming may have been asked.

• Work culture may involve collaboration, innovation, agile methodologies, and continuous learning.

• Examples of work culture could include regular team meetings, code reviews, hackathons, and ment
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Round duration - 15 minutes
Round difficulty - Easy

Round duration - 75 minutes
Round difficulty - Easy

There are 4 easy brute force question.

Q1. 
Form a Triangle Problem Statement
You are given an array of integers ARR with a length of N. Your task is to determine whether it's possible to construct at least one non-degenerate triangle using the val...read more
Ans. 
Determine if it's possible to form a non-degenerate triangle using array elements as sides.
• Check if the sum of any two sides is greater than the third side to form a triangle.

• If any such combination exists, return 'YES'; otherwise, return 'NO'.

• Example: For input [3, 4, 5], sum of 3 + 4 > 5, so 'YES'. For [1, 10, 12, 30], no such combination exists, so 'NO'.
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Round duration - 90 minutes
Round difficulty - Medium

There are 3 DS question, all are easy medium and medium level

Round duration - 90 minutes
Round difficulty - Medium

There are 3 coding problems asked which need to coded and compiled

Q1. 
Minimum Moves to Collect All Keys
Given an 'N' x 'M' grid, find the minimum number of moves required to collect all keys when starting at a specified point. Each move allows you to travel to an adjacent c...read more
Ans. 
Find the minimum number of moves required to collect all keys in a grid starting from a specified point.
• Use breadth-first search (BFS) to explore all possible paths from the starting point to collect keys.

• Keep track of keys collected, locks encountered, and the number of moves taken in each path.

• Avoid revisiting cells, and consider the movement rules while traversing the grid.

• Return the minimum number of moves to colle
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Round duration - 60 minutes
Round difficulty - Medium

There are back to back many question are asked, one have to give approach and pseudo, no need for compilable code

Q1. 
Insertion in AVL Tree Problem Statement
You are required to implement an AVL Tree from scratch. Given 'N' values representing nodes, insert these values into the AVL Tree and return its root after all ins...read more
Ans. 
Implement an AVL Tree from scratch and insert given values to balance the tree.
• Implement AVL Tree with rotation operations for balancing.

• Maintain balance factor for each node to ensure AVL property.

• Perform rotations (single or double) based on balance factor to balance the tree.

• Update heights of nodes after insertion to maintain AVL property.

• Ensure tree remains balanced after each insertion operation.
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Q2. 
Unlock the Briefcase Problem Statement
You have a briefcase secured by a lock with 4 circular wheels. The password is a sequence of 4 digits. Each wheel has 10 slots labeled ‘0’ through ‘9’. The wheels ca...read more
Ans. 
Find the minimum number of rotations required to unlock a briefcase with a given target code, considering dead-end codes.
• Iterate through all possible combinations of rotations to find the shortest path to the target code.

• Use a queue to efficiently explore all possible combinations.

• If the target code is a dead-end code, return -1 as it is not feasible to unlock the briefcase.
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Round duration - 60 minutes
Round difficulty - Easy

it was hiring manager round, most discussion is based on my resume and previous work