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I was interviewed in Apr 2021.
Round duration - 60 minutes
Round difficulty - Easy
Technical interview round. I was asked 2 DSA problems to discuss and code.
You are provided with a binary array, i.e., an array containing only 0s and 1s. Your task is to sort this binary array and return it after sorting.
The fir...
Yes, the binary array sorting problem can be solved in linear time and constant space by using a two-pointer approach.
Use two pointers, one starting from the beginning of the array and the other starting from the end.
Swap 0s to the left side and 1s to the right side by incrementing and decrementing the pointers accordingly.
Continue this process until the two pointers meet in the middle of the array.
Example: Input: [1,
Given an array arr
of length N
consisting of integers, find the sum of the subarray (including empty subarray) with the maximum sum among all subarrays.
Find the sum of the subarray with the maximum sum among all subarrays in a given array.
Iterate through the array and keep track of the maximum sum subarray encountered so far.
Use Kadane's algorithm to efficiently find the maximum subarray sum.
Consider the case where all elements in the array are negative.
Handle the case where the array contains only one element.
Round duration - 60 minutes
Round difficulty - Medium
Technical interview round. I was asked questions related to Android and its architecture.
RecyclerView is a flexible view for providing a limited window into a large data set.
RecyclerView recycles views to improve performance and memory usage.
It uses a LayoutManager to organize and position items within the view.
Adapter provides data to be displayed in the RecyclerView.
ItemDecoration allows for custom drawing of item decorations like borders or dividers.
ViewModel in Android is a class that is responsible for preparing and managing data for an activity or fragment.
ViewModel is part of the Android Architecture Components and is used to store and manage UI-related data in a lifecycle-conscious way.
It survives configuration changes such as screen rotations and retains data during the lifecycle of the activity or fragment.
ViewModel should never hold a reference to a view o...
Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.
Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.
I applied via Referral and was interviewed in Oct 2020. There was 1 interview round.
Questions on data structure, algorithm, and Android development.
To find maximum sum subarray, use Kadane's algorithm
To separate zeroes and ones in array, use two pointers approach
ViewModel is a class that stores and manages UI-related data
RecyclerView is a flexible view for providing a limited window into a large data set
To implement ViewModel, extend ViewModel class and override onCleared() method
I applied via LinkedIn and was interviewed before Sep 2023. There were 2 interview rounds.
Just basic DSA round
I applied via LinkedIn and was interviewed before Sep 2021. There were 4 interview rounds.
Aptitude + Coding Test
posted on 20 Feb 2024
I applied via Campus Placement
2 Questions - 1 graph and one basic
posted on 3 Jun 2024
Java is a high-level programming language known for its portability, security, and versatility.
Java is an object-oriented language
It is platform-independent, meaning it can run on any device with a Java Virtual Machine (JVM)
Java is used for developing a wide range of applications, from mobile apps to enterprise software
posted on 6 May 2024
The 'ref' keyword in C# is used to pass arguments by reference instead of by value.
Allows a method to modify the value of the argument passed to it
Useful when you want to update the original value of a variable inside a method
Can be used with value types and reference types
Example: void UpdateValue(ref int num) { num = 10; }
Example: int value = 5; UpdateValue(ref value); // value will be 10 after the method call
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.
Hooks are more lightweight and easier to understand compared to class components.
I was interviewed before Sep 2020.
Round duration - 90 minutes
Round difficulty - Easy
This was MCQ+Coding round.
Check if two strings are anagrams by comparing the sorted versions of the strings.
Sort both strings and compare if they are equal.
Use a hashmap to store the frequency of characters in each string and compare the maps.
Ignore spaces and punctuation when comparing the strings.
Round duration - 90 minutes
Round difficulty - Easy
This was face to face interview round.
Round duration - 90 minutes
Round difficulty - Easy
This was face to face interview round.
Tip 1 : Participate in live contests on websites like Codechef, Codeforces etc as much as possible.
Tip 2 : Practice previous interview questions from LeetCode, GeeksForGeeks.
Tip 3 : Revise Computer Science subjects like DBMS, OOPS thoroughly.
Add projects and Internships if you have done any and add only those things which you really know.
Final outcome of the interviewSelectedI was interviewed before Sep 2020.
Round duration - 90 Minutes
Round difficulty - Medium
Interview started at 11:00 am. It was an online round. During the coding round I submitted optimized solution and got full acceptance of the solutions.
You are provided with a directed graph composed of 'N' nodes. You have a matrix called 'EDGES' with dimensions M x 2, which specifies the 'M' edges in the graph. Each edge...
Detect cycle in a directed graph using depth-first search (DFS) algorithm.
Use DFS to traverse the graph and detect back edges indicating a cycle.
Maintain a visited array to keep track of visited nodes during traversal.
If a node is visited again during traversal and it is not the parent node, then a cycle exists.
Return true if a cycle is detected, false otherwise.
Round duration - 80 Minutes
Round difficulty - Medium
Interview started at 10:00 am. Interview went well, I was able to connect with the interviewer and enjoyed the whole interview
Find the next smallest palindrome strictly greater than a given number 'N' represented as a string 'S'.
You are given a number in string format, a...
Find the next smallest palindrome greater than a given number represented as a string.
Convert the string to an integer, find the next greater palindrome, and convert it back to a string.
Handle cases where the number is a palindrome or has all digits as '9'.
Consider both odd and even length numbers when finding the next palindrome.
Round duration - 80 Minutes
Round difficulty - Medium
Interview started at 11:00 am. Interview went well.
Given a binary tree of integers, your task is to return the boundary nodes of the tree in Anti-Clockwise direction starting from the root node.
The first line ...
Return the boundary nodes of a binary tree in Anti-Clockwise direction starting from the root node.
Traverse the left boundary nodes in a top-down manner
Traverse the leaf nodes from left to right
Traverse the right boundary nodes in a bottom-up manner
Handle cases where duplicates occur in the boundary nodes
Implement the function without printing as printing is already managed
Tip 1 : For Data Structures number of questions doesn't matter. Try to understand the logic behind them and try to apply them in creating multiple scenario's. Learn them by heart.
Tip 2 : For Web.Development Try to learn full stack development. See which part interests you more, Increase your knowledge horizon, Always try to build a system a system considering It will be served to millions of customers. By doing this 1-2 projects will increase and cover all the major things which one should learn in their career/college.
Tip 1 : Always try to make it a single page
Tip 2 : Always make resume company specific. eg. Data Structures part more if you are applying for MNC's eg. Amazon, Google, DE Shaw, browserstack.
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