EpiFi Software Engineer Interview Questions and Answers

Q1. Extract data from a string.
Ans. 
Extracting data from a string involves identifying and retrieving specific information within the given text.
• Use string manipulation functions like split(), substring(), or regex to extract data.

• Identify the pattern or delimiter that separates the data you want to extract.

• Create a logic to extract the desired data and store it in an array of strings.
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Q1. System design question normal
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Coding question of moderate difficulty

Coding simple problem

Q1. Prepare for normal system design questions and you are good to go
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Q1. Basic questions on data structures
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Q1. Second round was Managerial Round. The interviewer basically had a conversation with me and asked some hr questions also.
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Q1. Basic HR questions
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Q1. Data Structure and algorithm
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Q2. System design question
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Q1. 2Sum DSA leetcode problem
Ans. 
2Sum problem involves finding two numbers in an array that add up to a specific target.
• Use a hashmap to store the difference between the target and each element in the array.

• Iterate through the array and check if the current element's complement exists in the hashmap.

• Return the indices of the two numbers that add up to the target.
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Q2. Spiral traversal of a Binary tree
Ans. 
Spiral traversal of a Binary tree involves visiting nodes level by level alternating between left to right and right to left.
• Start by pushing the root node into a queue.

• While the queue is not empty, pop a node, print its value, and push its children into the queue.

• Alternate between popping nodes from the queue and printing their values in a spiral manner.
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Q1. A problem similar to coin change problem of leetcode
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Q2. Aggressive cows problem
Ans. 
The aggressive cows problem involves finding the maximum distance between cows in a field while ensuring they are not too close to each other.
• Use binary search to find the maximum distance between cows.

• Sort the cows' positions and check if a certain distance is feasible.

• Consider the constraints of the problem such as the number of cows and the size of the field.
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Q1. Basic behavioural questions like why I am looking for a change and would I be able to handle the increased work pressure as I was shifting from MNC to a startup
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Time and work ,time and distance

Q1. There were 3 dsa questions which were of topic arrays and strings
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Q1. It was more like a managerial round where they asked questions about resume projects and past experience
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