Six Sigma Soft Solutions Software Development Engineer Interview Questions and Answers

Q1. About salary expectation?
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Q2. Why are u leaving current organisation?
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Its a mix of basic OOPS concepts , functionality call and output of sample program

Q1. Asking about ourselves and college project and how we could work in challenging environment and projects
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Q2. Would you work in any environment after your training if its Development or Testing or any other
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Q1. Java technical questions
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Q1. Project related questions
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Q1. Strengths, Weakness, formalities, describe yourself.
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Round duration - 60 minutes
Round difficulty - Medium

Mcq + Data structures questions

Q1. Maximum sum subarray
Given an array of numbers, find the maximum sum of any contiguous subarray of the array.
For example, given the array [34, -50, 42, 14, -5, 86], the maximum sum would be 137, since w...read more
Ans. Brute Force Approach
1. Create a nested loop. The outer loop will go from i = 0 to i = n - k. This will cover the starting indices of all k-subarrays
2. The inner loop will go from j = i to j = i + k - 1. This will cover all the elements of the k-subarray starting from index i
3. Keep track of the maximum element in the inner loop and print it.
Space Complexity: O(1)Explanation:
O(1) because the extra space being used (looping vari...read more
Answered by CodingNinjas
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Round duration - 70 minutes
Round difficulty - Medium

Standard System Design round

Q1. System Design Question
Design a Doctor Appointment System with some testcases
Ans. 
Tip 1 : Implement using OOPs 
Tip 2 : Try to tell your approach to the interviewer as much as you can side by side
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Round duration - 90 minutes
Round difficulty - Medium

Interview of DSA + OOPS + Databse(SQL query) + Operating System

Q1. Left View Of Binary Tree
Given a binary tree. Print the Left View of the Tree.
Example :
If the input tree is as depicted in the picture: 
The Left View of the tree will be:  2 35 2 
Input format :
...read more
Ans. Recursive Approach
This problem can be solved through recursion.We will maintain max_level variable which will keep track of maxLevel and will pass current level in recursion as argument. Whenever we see a node whose current level is more than maxLevel then we will print that node as that will be first node for that current level. Also update maxLevel with current level.
Space Complexity: O(n)Explanation:
O(N), where ‘N’...read more
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Q2. SQL Question
What is the difference between CHAR and VARCHAR2 datatype in SQL? 
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Q3. SQL Question
Write an SQL query to find names of employees starting with ‘A’? 
 
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Q4. OOPS Question
What are the various types of constructors in C++?
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Q5. OOPS Question
What is the difference between overloading and overriding?
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Q6. Operating System Question
What is a process? What are the different states of a process?
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Q7. Operating System Question
What is IPC? What are the different IPC mechanisms?
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Round duration - 60 minutes
Round difficulty - Easy

Hr round - normal hr questions + situational 

Thoughtworks community discussion

Q1. Basic HR Question
Why should we hire you?
Ans. 
Tip 1 : Read all Thoughtworks community page and be honest

Tip 2 : Be open-minded and answer whatever you are thinking, in these rounds I feel it is important to have opinion.

Tip 3 : The cross-questioning can go intense sometimes, think before you speak.
Answered by CodingNinjas
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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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Q1. Question on java and microservies
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Q1. Current and expected CTC
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