Agilisium Software Engineer Interview Questions and Answers

Round duration - 60 minutes
Round difficulty - Medium

Q1. 
Reverse String Operations Problem Statement
You are provided with a string S and an array of integers A of size M. Your task is to perform M operations on the string as specified by the indices in array A...read more
Ans. 
Given a string and an array of indices, reverse substrings based on the indices to obtain the final string.
• Iterate through the array of indices and reverse the substrings accordingly

• Ensure the range specified by each index is non-empty

• Return the final string after all operations are completed
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Round duration - 30 minutes
Round difficulty - Easy

Q1. How do you come out of an iframe in Selenium?
Ans. 
To switch out of an iframe in Selenium, you can use the switchTo().defaultContent() method.
• Use driver.switchTo().defaultContent() to switch out of the iframe.

• If the iframe is nested within multiple iframes, use driver.switchTo().parentFrame() to navigate up the iframe hierarchy.

• You can also switch to a specific iframe by using driver.switchTo().frame() with the iframe element or index.
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Round duration - 30 minutes
Round difficulty - Easy

Q1. Why do you want to leave your current company?
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Round duration - 45 Minutes
Round difficulty - Hard

It was conducted in the evening on Teams call. It was a mix of DSA question, conceptual discussion on javascript and node.js.

Q1. 
All Paths From Source Lead To Destination Problem Statement
In a directed graph with 'N' nodes numbered from 0 to N-1, determine whether every possible path starting from a given source node (SRC) eventua...read more
Ans. 
Determine if all paths from a given source node lead to a specified destination node in a directed graph.
• Check if there is at least one path from source to destination.

• Ensure that nodes with no outgoing edges from source are the destination.

• Verify that the number of paths from source to destination is finite.

• Return True if all paths from source lead to destination, otherwise False.
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Round duration - 30 Minutes
Round difficulty - Medium

Round duration - 60 Minutes
Round difficulty - Medium

It was a hiring manager round which happened in the evening. The interviewer introduced me to the product I was being hired for, asked me a few questions on my experience (both technical and business). I talked on the architecture and design of Single page applications and my then current project. I was also allowed to ask questions and they were addressed.

Q1. Can you explain the architecture of your current project?
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Round duration - 30 Minutes
Round difficulty - Easy

It was in the evening. The interviewer was professional. I was asked about my past experiences, why I was switching and some behavioral questions.

Q1. Prepare basics and and under why and what of any concept
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Q2. Be sure on what you answer, if not sure be sure on the answer you provide
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Q1. Scenario based python and SQL questions
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Q1. General discussion with manager
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Q1. What is the difference between List and Tuple?
Ans. 
List is mutable and Tuple is immutable in Python.
• List can be modified after creation while Tuple cannot be modified.

• List uses square brackets [] while Tuple uses parentheses ().

• List is used for homogenous data while Tuple is used for heterogenous data.

• List is slower than Tuple in terms of performance.

• Example of List: [1, 2, 3] and Example of Tuple: (1, 'hello', 3.14)
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Q2. What is __init__ ? Follow up question why is __ (double underscore) used?
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Q3. A SQL query based on group by and order by DESC LIMIT 1 in order to fetch highest row of a group in a dataset given by panelist.
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Q4. A simple query on SQL using group by and aggregate function.
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Q5. Panelist asked about my previous work experience and projects I worked upon earlier and the technologies used.
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Q6. Question on how do we create table using SQL Alchemy in Flask (since I had used Python Flask in one of my previous projects and had highlighted it pretty well on my resume).
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Q7. How is memory managed in Python?
Ans. 
Python uses automatic memory management through garbage collection.
• Python uses reference counting to keep track of memory usage.

• When an object's reference count drops to zero, it is deleted.

• Python also uses a garbage collector to handle circular references.

• Memory allocation is handled by the Python memory manager.

• Python provides tools like the 'gc' module for managing memory usage.
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Q1. Question on List operation.
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Q2. Do you know numpy pandas?
Ans. 
Yes, numpy and pandas are Python libraries used for data analysis and manipulation.
• NumPy is used for numerical operations on arrays and matrices.

• Pandas is used for data manipulation and analysis, providing data structures like DataFrame.

• Both libraries are commonly used in data science and machine learning.

• Example: import numpy as np; import pandas as pd;
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Q3. A question to count number of times a letter occurs in a sentence and then also find the maximum occurring letter.
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Q4. Difference between generator and iterator?
Ans. 
Generator generates values on the fly while iterator iterates over a collection of values.
• Generator is a function that returns an iterator.

• Generators use 'yield' keyword to return values one at a time.

• Iterators are objects that implement the 'next' method to return the next value in a collection.

• Iterators can be created from arrays, strings, maps, sets, etc.

• Generators are useful for generating large sequences of values...read more
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Q5. What is the selling point about you why should we consider you over other candidate?
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Q1. Why are you looking for a change?
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Q2. What are your salary expectations?
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