i
Perfios Software Solutions
Filter interviews by
I was interviewed in Feb 2025.
Rotate an array of strings by n positions
Create a new array and copy elements from original array starting from index n to the end, then copy elements from index 0 to n-1
Alternatively, you can use array slicing to achieve the rotation
Example: Original array ['a', 'b', 'c', 'd', 'e'], rotate by 2 positions would result in ['c', 'd', 'e', 'a', 'b']
Use ORDER BY and LIMIT to get last entry in SQL query
Use ORDER BY column_name DESC to sort in descending order
Use LIMIT 1 to get only the last entry
Hash map is a data structure that stores key-value pairs and uses a hash function to map keys to their corresponding values.
Hash map uses a hash function to determine the index of the key-value pair in the underlying array.
Collisions can occur when two keys hash to the same index, which can be resolved using techniques like chaining or open addressing.
Hash maps offer constant time complexity O(1) for insertion, deletio...
Implementing a palindrome check in Java without using the reverse() function.
Create a function that takes a string as input.
Use two pointers, one starting from the beginning of the string and the other from the end.
Compare characters at the two pointers and move them towards each other until they meet or cross.
If all characters match, the string is a palindrome.
Example: 'racecar' is a palindrome.
Example: 'hello' is not
Use counting method to sort array of strings with 0's and 1's.
Create a count array to store the frequency of 0's and 1's.
Update the original array based on the count array.
Example: Input array - ['0', '1', '0', '1', '1'], Output array - ['0', '0', '1', '1', '1']
HTTPS provides secure communication over the internet using encryption, while HTTP does not.
HTTPS uses SSL/TLS encryption to secure data transmission, while HTTP does not.
HTTPS URLs begin with 'https://' and use port 443, while HTTP URLs begin with 'http://' and use port 80.
HTTPS ensures data integrity and authentication, while HTTP does not provide these security measures.
The algorithm to reverse a singly linked list involves iterating through the list and changing the pointers to reverse the direction of the links.
Start with three pointers: current, previous, and next.
Iterate through the list, updating the next pointer to point to the previous node.
Move the previous pointer to the current node and the current pointer to the next node.
Continue until the end of the list is reached, then ...
SQL query to retrieve data from employee table
Use SELECT statement to retrieve data
Specify the columns you want to retrieve
Use FROM clause to specify the table name
Add any conditions using WHERE clause if needed
React Hooks are functions that let you use state and other React features without writing a class.
React Hooks were introduced in React 16.8.
They allow you to use state and other React features in functional components.
Some commonly used React Hooks are useState, useEffect, useContext, etc.
React is better than plain JavaScript for building complex user interfaces due to its component-based architecture and virtual DOM.
React allows for easier management of state and props through its component-based architecture.
Virtual DOM in React helps improve performance by only updating the necessary parts of the actual DOM.
React's declarative approach simplifies the process of building and maintaining complex UIs.
Re...
DSA : LL, Stack , Trees, BST based questions
5 MySQL queries
Perfios Software Solutions interview questions for popular designations
posted on 20 Nov 2024
I applied via LinkedIn and was interviewed in May 2024. There was 1 interview round.
Get interview-ready with Top Perfios Software Solutions Interview Questions
I applied via Job Portal and was interviewed in Aug 2023. There were 3 interview rounds.
Take a web page and explain about how you do testing on it manually...
I applied via Campus Placement and was interviewed before Aug 2023. There were 5 interview rounds.
4 DSA questions and aptitude questions. It was a pen and paper test for nearly 75 to 90 min
Designed DB schema and API for internship project
Created normalized database schema to store user information, orders, and products
Implemented RESTful API endpoints for CRUD operations on user data
Used authentication and authorization mechanisms to secure API endpoints
Optimized queries for efficient data retrieval and processing
Alarm clocks in phones work by triggering a pre-set notification at a specific time to alert the user.
Alarm clock app is programmed to trigger a notification at a specific time set by the user
The phone's system clock is used to track the current time and compare it to the set alarm time
When the alarm time matches the current time, the phone plays the selected alarm sound or vibration
Users can customize alarm settings s...
Data Structures and Algorithms are used in real life applications such as social media algorithms, GPS navigation, and search engines.
Social media algorithms use DSA to personalize user feeds based on their interests and interactions.
GPS navigation systems use Dijkstra's algorithm to find the shortest route between two locations.
Search engines like Google use algorithms like PageRank to rank web pages based on relevanc
I applied via Naukri.com and was interviewed in Oct 2023. There were 2 interview rounds.
I applied via Referral and was interviewed before Oct 2023. There were 3 interview rounds.
More questions around springboot and some managerial questions
I was interviewed in Aug 2023.
Top trending discussions
The duration of Perfios Software Solutions interview process can vary, but typically it takes about less than 2 weeks to complete.
based on 18 interviews
Interview experience
based on 161 reviews
Rating in categories
3-5 Yrs
Not Disclosed
1-2 Yrs
Not Disclosed
Senior QA Engineer
67
salaries
| ₹0 L/yr - ₹0 L/yr |
Software Development Engineer
54
salaries
| ₹0 L/yr - ₹0 L/yr |
Senior Software Development Engineer
51
salaries
| ₹0 L/yr - ₹0 L/yr |
Data Processing Associate
50
salaries
| ₹0 L/yr - ₹0 L/yr |
Credit Analyst
45
salaries
| ₹0 L/yr - ₹0 L/yr |
FinBox
Yodlee
Money View
Signzy Technologies