EX Squared Solutions Software Developer Interview Questions and Answers

Round duration - 60 Minutes
Round difficulty - Medium

The test was conducted around 3 pm . Four coding questions were there. 2 questions were easy and 2 were of moderate difficulty level. It was conducted remotely with video proctoring.I was able to solve all the 4 questions.

Q1. 
Generate Possible Words from T9 Keypad
Given a string S consisting of digits from 2 to 9, the task is to generate all possible strings that can be formed by mapping these digits to letters on a T9 keypad....read more
Ans. 
Generate all possible strings by mapping digits to letters on a T9 keypad and print them in lexicographical order.
• Create a mapping of digits to letters on a T9 keypad

• Use recursion to generate all possible combinations of letters for the given digits

• Sort the generated strings in lexicographical order

• Return the sorted strings as an array of strings
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Q2. 
Flip Bits Problem Explanation
Given an array of integers ARR of size N, consisting of 0s and 1s, you need to select a sub-array and flip its bits. Your task is to return the maximum count of 1s that can b...read more
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Round duration - 10 Minutes
Round difficulty - Easy

It was a telephonic round. The HR asked some basic questions like how was your experience in the previous rounds.
 

Q1. Why do you want to join our company and why should we hire you?
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