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I was interviewed in Mar 2022.
Round duration - 120 Minutes
Round difficulty - Medium
Machine Coding Round
2 Hours in Total
15 Mins for Question Explaination and Doubts
1.5 Hours for coding
15 mins to discuss the approach
Timing - 3 to 5 pm (They are flexible)
Interviewer was very patient and helped me understand the question
Round duration - 60 Minutes
Round difficulty - Medium
2 Data Strucutre Questions
Timing 5-6 pm (They are flexible)
Google Meet
Online IDE
Given an integer 'N', your task is to compute the number of structurally unique BSTs (binary search trees) that can be formed using an exact number of 'N' uniq...
The task is to compute the number of structurally unique BSTs that can be formed using an exact number of unique values.
Use dynamic programming to solve the problem efficiently.
The number of structurally unique BSTs can be calculated using Catalan numbers.
For N nodes, the number of structurally unique BSTs is given by the Nth Catalan number.
Example: For N=3, the number of structurally unique BSTs is 5.
You are provided with a string 'STR'
that consists of lowercase English letters ranging from 'a' to 'z'. Your task is to determine all non-empty possible subsequen...
Generate all possible subsequences of a given string.
Use recursion to generate all possible subsequences by including or excluding each character in the string.
Maintain a current index to keep track of the characters being considered.
Append the current character to each subsequence generated so far.
Recursively call the function with the next index to include or exclude the next character.
Base case: When the current ind...
Round duration - 60 Minutes
Round difficulty - Easy
HIRING MANAGER ROUND
Discussion about the organisation now questions
Tip 1 : Practice is they to success, every person will need a different path for preparation, the resources that you should use will depend upon your current expertise.
Tip 2 : For Machine Coding Rounds speed is key, you need to practice atleast 20 questions, Try to figure out techniques to common out code, code out your first question, and then spend good 2-3 hours in reducing no of lines and removing redundancy, try to note down methods you used to achieve less redundancy and for all the next questions you practice try to achieve that same quality from the beginning which will automatically increase your speed
Tip 3 : Do company wise preparation, look for interview experiences and try to map out commonly asked questions and categories of those questions and practice accordingly
Tip 1 : If applying for any non FE role (or any role that does not require designing or creative skills) keep a minimalistic resume
Tip 2 : Ensure to add a summary at the top which mentions all the criterias HRs consider while short listing resumes (Experience, Degree and Branch, Languages you have experience in, City, Willingness to Relocate, Notice Period, If already on notice period mention your last working day)
I was interviewed before May 2021.
Round duration - 150 Minutes
Round difficulty - Medium
3 coding questions and 20 mcq's
Given an integer array ARR
and a positive integer K
, your task is to determine two non-overlapping subarrays of length K
that yield the maximum combined sum.
The task is to find two non-overlapping subarrays of length K in an array, such that their sum is maximum.
Iterate through the array and calculate the sum of each subarray of length K
Store the maximum sum obtained from the first subarray
Iterate again and calculate the sum of each subarray of length K, excluding the previous subarray
Store the maximum sum obtained from the second subarray
Return the sum of the two maximum
You are given a string 'S' of length 'N' which may include duplicate alphabets. Your goal is to calculate the number of distinct subsequences in the string.
The task is to find the count of distinct subsequences in a given string.
Use dynamic programming to solve the problem.
Create a 2D array to store the count of distinct subsequences for each prefix of the string.
Initialize the first row of the array with 1, as there is only one subsequence of an empty string.
For each character in the string, calculate the count of distinct subsequences by considering two cases: including...
Given two integer arrays/ lists ARR1
and ARR2
of sizes N
and M
respectively, you are required to determine their intersection. An intersection is defined as the set of...
The task is to find the intersection of two integer arrays/lists.
Read the number of test cases
For each test case, read the size and elements of the first array/list
Read the size and elements of the second array/list
Find the intersection of the two arrays/lists
Print the intersection elements in the order they appear in the first array/list
Round duration - 120 Minutes
Round difficulty - Medium
Online video call based round, Timing was 10-11 AM
Interview started with basic greetings, post that i explained by projects in brief and then we jumped right into dsa questoins.
You are given a non-empty grid that consists of only 0s and 1s. Your task is to determine the number of islands in this grid.
An island is defined as a group of 1s (re...
The task is to find the number of islands in a grid consisting of 0s and 1s.
An island is a group of 1s connected horizontally, vertically, or diagonally
The grid is surrounded by 0s on all four edges
Use a depth-first search (DFS) or breadth-first search (BFS) algorithm to traverse the grid and count the number of islands
Initialize a visited array to keep track of visited cells
For each unvisited cell with a value of 1, p...
Determine the number of permutations of list A
= [1, 2, ..., N] such that for every index i
, either A[i]
is divisible by i
or i
is divisible by A[i]
.
The input start...
The goal is to find the number of permutations of a list satisfying certain conditions.
Iterate through all permutations of the list
Check if each permutation satisfies the given conditions
Count the number of permutations that satisfy the conditions
Return the count for each test case
Determine if a given N * N matrix is an idempotent matrix. A matrix is considered idempotent if it satisfies the following condition:
M * M = M
The first line cont...
An idempotent matrix is a square matrix that remains unchanged when multiplied by itself.
Check if the given matrix satisfies the property M*M = M
Iterate through each element of the matrix and perform the matrix multiplication
Compare the result with the original matrix
If they are equal, return true; otherwise, return false
Round duration - 120 Minutes
Round difficulty - Easy
This was EM round, started with me explaining my projects in deep and facing some counter questions on that, proceeded to os, dbms basic questions and some low level designing and lastly a puzzle to end interview.
Design attendance management system
Create a database to store employee information
Implement a user interface for employees to mark their attendance
Develop a system to track and record attendance data
Generate reports and analytics based on attendance data
Round duration - 20 Minutes
Round difficulty - Easy
This was formality round, HR came and explained what meesho does and told my joining dates and compensation details.
Tip 1 : Do medium level queustions
Tip 2 : Learn basic system design for startup interviews.
Tip 1 : Put things on your resume that you know by your heart, otherwise will have a lot of difficulty in the HM round.
Tip 2 : Do not mention co-curricular activities on your resume.
I applied via Campus Placement and was interviewed in May 2024. There were 2 interview rounds.
2 medium - question 1 array and 1 dp
1 med to hard - dynamic programming
Concurrency in software development allows multiple tasks to run simultaneously, improving performance and responsiveness.
Use multithreading to execute multiple tasks concurrently
Implement asynchronous programming to handle tasks that may take longer to complete
Use synchronization techniques like locks and semaphores to manage access to shared resources
Consider using thread pools to manage and reuse threads efficiently
I applied via Campus Placement and was interviewed in Aug 2024. There were 2 interview rounds.
3 Medium level dsa questions
The Low Level Design (LLD) of a cab booking system involves detailing the system architecture and components at a lower level of abstraction.
Identify the main components of the system such as user interface, booking engine, payment gateway, and driver allocation algorithm.
Define the interactions between these components and how data flows between them.
Specify the data structures and algorithms used for efficient bookin...
I applied via Campus Placement and was interviewed in Aug 2024. There were 2 interview rounds.
3 coding question
2 medium 1 hard
HAckerrank based test
I applied via Referral and was interviewed in Mar 2024. There were 3 interview rounds.
There were 2 questions.
1. Knapsack
2. Median in an array
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based on 3 reviews
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