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I applied via Naukri.com and was interviewed in Apr 2021. There were 3 interview rounds.
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I applied via Referral and was interviewed before Oct 2020. There were 6 interview rounds.
Coalnet Architecture of MMS Module is a system for managing and monitoring coal mines.
Coalnet Architecture is designed to manage and monitor coal mines.
It includes modules for tracking production, equipment maintenance, and safety.
The MMS Module specifically focuses on maintenance management.
It allows for scheduling and tracking of maintenance tasks, as well as inventory management.
The architecture is scalable and can ...
Find the missing number from 1 million random numbers.
Calculate the sum of all numbers from 1 to 1 million using the formula n(n+1)/2
Calculate the sum of all the given numbers
Subtract the sum of given numbers from the sum of all numbers to get the missing number
I applied via Naukri.com and was interviewed before May 2020. There were 5 interview rounds.
I appeared for an interview before Mar 2021.
Round duration - 60 Minutes
Round difficulty - Easy
Given a binary tree of integers, return the level order traversal of the binary tree.
The first line contains an integer 'T', representing the number of te...
Return the level order traversal of a binary tree given in level order with null nodes represented by -1.
Create a queue to store nodes for level order traversal
Start with the root node and add it to the queue
While the queue is not empty, dequeue a node, print its value, and enqueue its children
Repeat until all nodes are traversed in level order
Round duration - 45 minutes
Round difficulty - Easy
A deadlock in DBMS occurs when two or more transactions are waiting for each other to release locks, causing them to be stuck indefinitely.
Deadlock is a situation where two or more transactions are unable to proceed because each is waiting for the other to release locks.
To prevent deadlocks, DBMS uses techniques like deadlock detection and prevention algorithms.
Joins in DBMS are used to combine rows from two or more ta...
Round duration - 60 Minutes
Round difficulty - Medium
Design a system for Twitter
Key components: user profiles, tweets, hashtags, timelines
Architecture: microservices, load balancers, databases, caching
Scalability: sharding, replication, CDN
Real-time processing: streaming APIs, push notifications
Round duration - 60 Minutes
Round difficulty - Medium
You are provided with an array of ‘N’ integers and ‘Q’ queries. Each query requires calculating the maximum subarray sum in a specified range of the array.
The first ...
Implement a function to calculate maximum subarray sum queries in a given range of an array.
Iterate through each query and calculate the maximum subarray sum within the specified range using Kadane's algorithm.
Keep track of the maximum sum found so far and update it as needed.
Return the maximum subarray sum for each query in the test case.
Given an integer array arr
of size 'N' containing only 0s, 1s, and 2s, write an algorithm to sort the array.
The first line contains an integer 'T' representing the n...
Sort an integer array containing only 0s, 1s, and 2s in linear time complexity.
Use a single scan over the array to sort it in-place.
Maintain three pointers for 0s, 1s, and 2s and swap elements accordingly.
Example: Input: [0, 2, 1, 2, 0], Output: [0, 0, 1, 2, 2]
Round duration - 20 Minutes
Round difficulty - Medium
Tip 1 : Prepare DS and Algo
Tip 2 : Prepare Dynamic programming
Tip 1 : Good in DS and algo that will be help in the interview that is very neccassry
Tip 2 : Prepare DBMS
Reverse a given string
Use a loop to iterate through the string and append each character to a new string in reverse order
Alternatively, use built-in string functions to reverse the string
If the string is stored as an array of characters, swap the first and last elements, then the second and second-to-last elements, and so on until the middle is reached
I applied via Naukri.com and was interviewed before Jul 2020. There were 3 interview rounds.
Program on array
Arrays are used to store multiple values in a single variable
Arrays can be of any data type
Arrays can be accessed using index numbers
Arrays can be sorted and searched
I applied via Naukri.com and was interviewed in Sep 2020. There were 4 interview rounds.
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