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I applied via LinkedIn and was interviewed before Apr 2021. There were 4 interview rounds.
There were few MCQ questions based on android and 2 coding questions
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posted on 15 Sep 2021
I appeared for an interview in Dec 2020.
Round duration - 90 minutes
Round difficulty - Medium
Total of 8 questions:
4 MCQ(oops and expected output type questions) + other 2 were coding questions, out of which one is some class implementation question.
Given an array ARR
and an integer K
, your task is to count all subarrays whose sum is divisible by the given integer K
.
The first line of input contains an...
Count subarrays with sum divisible by K in an array.
Iterate through the array and keep track of the running sum modulo K.
Use a hashmap to store the frequency of remainders.
For each prefix sum, check how many previous prefix sums have the same remainder.
Return the total count of subarrays with sum divisible by K.
Round duration - 60 minutes
Round difficulty - Easy
This round was with the USA team, the panel consisted of 2 members. It took place at around 9 PM IST. The interviewer's focus was on approach.
You are given an unsorted array ARR
. Your task is to sort it so that it forms a wave-like array.
The first line contains an integer 'T', the number of test cases.
For ea...
Sort an array in a wave-like pattern where each element is greater than or equal to its adjacent elements.
Iterate through the array and swap elements at even indices with their adjacent odd indices to form a wave pattern.
There can be multiple valid wave arrays, so any valid wave array is acceptable.
Ensure the first element is greater than or equal to the second element to start the wave pattern.
Given an integer number num
, your task is to convert 'num' into its corresponding word representation.
The first line of input contains an integer ‘T’ denoting the number o...
Convert a given integer number into its corresponding word representation.
Implement a function that takes an integer as input and returns the word representation of that number.
Break down the number into its individual digits and convert each digit into its word form.
Handle special cases like numbers between 10 and 19, and multiples of 10.
Combine the word forms of individual digits to form the final word representation
Round duration - 40 minutes
Round difficulty - Easy
It was a managerial round. The position of the person taking the interview was of a technical architect. As was informed by the recruiter, previously he was a technical architect at Amazon.
Facebook stores comments in its database using a combination of relational and non-relational databases.
Comments are typically stored in a relational database like MySQL for structured data storage.
For scalability and performance, Facebook may also use a NoSQL database like Cassandra or HBase for storing comments in a denormalized format.
Metadata related to comments such as likes, timestamps, and user information may b...
Tip 1 : Practice the most frequent and most common questions DSA questions asked in companies like Amazon, Microsoft.
Tip 2 : Focus on solving the questions on your own as much as you can.
Tip 3 : Don't waste your time on the number of questions while compromising quality.
Tip 4 : Do mock interviews with your friend if it's been a long since you have given the interview.
Tip 5 : For virtual interviews, always have a backup of data(you may use mobile data if Wi-Fi goes out). While during an interview try to maintain eye contact every now and then.
Tip 6 : Keep your resume short to 1 page and have far/good knowledge of the tech stack you have mentioned
Tip 1 : Keep it short to 1 page
Tip 2 : Prepare it well.
Tip 3 : Focus more on the problem and the solution. Rather than tools used to solve the problem
Some database questions,some java questions .
JavaScript is a programming language used for web development, while jQuery is a library built with JavaScript to simplify HTML document traversal and manipulation.
JavaScript is a programming language, while jQuery is a library written in JavaScript.
JavaScript can be used for a wide range of tasks, while jQuery is mainly used for DOM manipulation and event handling.
JavaScript is a core technology for web development, w...
Different types of joins are used in SQL to combine rows from two or more tables based on a related column between them.
Inner Join: Returns rows when there is at least one match in both tables.
Left Join (or Left Outer Join): Returns all rows from the left table and the matched rows from the right table.
Right Join (or Right Outer Join): Returns all rows from the right table and the matched rows from the left table.
Full ...
Multithreading allows multiple threads to run concurrently, while exception handling deals with errors in a program.
Multithreading involves running multiple threads simultaneously to improve performance and responsiveness.
Threads share the same memory space but have their own program counter and registers.
Exception handling is a mechanism to handle errors or exceptional situations in a program.
It helps prevent the prog...
I appeared for an interview before Mar 2022.
To implement ACID property, use transactions to ensure atomicity, consistency, isolation, and durability of data.
Use transactions to group related database operations together.
Ensure that all operations within a transaction are completed successfully or none of them are.
Maintain consistency by enforcing data integrity constraints.
Isolate transactions to prevent interference from other transactions.
Ensure durability by ...
I applied via Naukri.com and was interviewed in May 2024. There were 2 interview rounds.
Implement a counter using closure in JavaScript.
Create a function that returns another function which increments a counter variable.
The counter variable should be defined in the outer function's scope and only accessible to the inner function.
Each time the inner function is called, increment the counter variable and return its value.
Promises are objects representing the eventual completion or failure of an asynchronous operation. promise.all() is a method that takes an array of promises and returns a single promise that resolves when all of the promises have resolved.
Promises are used in JavaScript to handle asynchronous operations.
promise.all() takes an array of promises and returns a single promise that resolves when all promises in the array ha...
I applied via Approached by Company and was interviewed in Jan 2022. There were 4 interview rounds.
It was sort of pair programming where you will be told to implement some feature. Here they check your coding style, your approach and the architecture you follow.
I appeared for an interview 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 Jul 2023. There were 3 interview rounds.
3 Moderate questions were asked. I managed to solve 2 completely and 1 partially.
I applied via Campus Placement and was interviewed in Jun 2021. There was 1 interview round.
Some of the top questions asked at the Tokopedia Android App Developer interview -
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