Wayfair | Software Engineer II | Machine Coding Round

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wayfair
software engineer iiremote3 yearsOffer
August 19, 202520 reads

Summary

I recently went through the Wayfair Software Engineer II interview process, which included a machine coding round. The experience was challenging but rewarding, and I was fortunate to receive a job offer.

Full Experience

As a Software Engineer II, I was invited to participate in a machine coding round as part of the interview process. The round consisted of several coding problems that tested my ability to write efficient and clean code under time pressure. The problems were presented in a coding environment, and I had to solve them within a limited timeframe.

The interview process was entirely remote, which made it a bit more challenging to stay focused. However, the problems themselves were well-structured and required a good understanding of data structures and algorithms. I was able to solve most of the problems, which gave me confidence in my abilities.

Overall, the experience was positive, and I was happy to receive an offer for the position.

Interview Questions (3)

Q1
Find Triplet in Stream with Threshold
Data Structures & AlgorithmsHard

Given a stream of integers, find a triplet (a, b, c) such that the absolute difference between a and b is less than or equal to a given threshold, and the absolute difference between b and c is also less than or equal to the threshold. The triplet should be found in a single pass through the stream.

Q2
Minimum Number of Swaps to Make the String Balanced
Data Structures & AlgorithmsHard

You are given a string consisting of only '(' and ')'. The string is considered balanced if every opening parenthesis has a corresponding closing parenthesis and vice versa. The task is to find the minimum number of swaps required to make the string balanced.

Q3
Maximum Number of Points with Equal Distance
Data Structures & AlgorithmsHard

Given a set of points on a 2D plane, find the maximum number of points that lie on a straight line with the same distance from each other.

Preparation Tips

To prepare for the machine coding round, I focused on practicing data structures and algorithms, particularly problems related to string manipulation and array operations. I also worked on improving my coding speed and accuracy by solving problems under time constraints. Additionally, I reviewed common coding interview patterns and practiced writing clean, efficient code.

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