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posted on 10 Mar 2015
Algorithm to find 2 numbers in an array whose sum is equal to a target integer
Use a hash table to store the difference between target and each element in the array
Iterate through the array and check if the current element exists in the hash table
Return the pair of elements that sum up to the target integer
Write a select statement to retrieve work of all users who belong to my team.
Join USERS and WORK tables on user_id
Join MANAGERS and USERS tables on team
Filter by manager_id
The manifest.json file contains the most important information of a Chrome extension.
The manifest.json file includes the version number, permissions, content scripts, background scripts, and other important details.
It is located in the root directory of the extension.
It is required for all Chrome extensions.
Example: "manifest_version": 2, "version": "1.0", "permissions": ["tabs", "storage"]
Hashtable is faster for finding an item than a sorted list.
Hashtable has constant time complexity O(1) for finding an item.
Sorted list has logarithmic time complexity O(log n) for finding an item.
Hashtable uses hashing to directly access the item's location.
Sorted list requires binary search to find the item's location.
Hashtable is ideal for large datasets with frequent lookups.
Sorted list is ideal for datasets that re
JSON and XML are the most popular data interchange formats when using APIs.
JSON (JavaScript Object Notation) is a lightweight format that is easy to read and write. It is widely used in web APIs.
XML (Extensible Markup Language) is a more complex format that is also widely used in web APIs.
Other formats include CSV (Comma Separated Values), YAML (YAML Ain't Markup Language), and Protocol Buffers.
Popular APIs for Social Commerce services
Facebook Graph API for social media integration
Instagram API for photo sharing and tagging
Twitter API for real-time updates and customer engagement
Pinterest API for product discovery and sharing
Google Maps API for location-based services
PayPal API for secure payment processing
Use a script to iterate through each HTML page, locate phone numbers, and update their format.
Write a script using a programming language like Python or JavaScript to iterate through each HTML page
Use regular expressions to locate phone numbers in the pages
Update the format of the phone numbers as needed (e.g. adding country code, changing separators)
Save the updated HTML pages with the new phone number format
Designing Google Suggest system
I would start by analyzing user search patterns and frequently searched keywords
Then, I would create a database of these keywords and their associated search results
I would use indexing services to quickly retrieve relevant results for each keyword
I would also implement machine learning algorithms to improve the accuracy of suggestions over time
Check if a number is a power of 2 and odd.
To check if a number is a power of 2, use bitwise AND operator with the number and its predecessor. If the result is 0, it is a power of 2.
To check if a number is odd, use modulus operator with 2. If the result is 1, it is odd.
Example code in Python:
def is_power_of_two(num):
return num & (num - 1) == 0
def is_odd(num):
return num % 2 == 1
By introducing new menu items, optimizing pricing strategy, and improving the overall dining experience.
Conduct a survey to understand the preferences of employees
Introduce healthy and affordable meal options
Offer discounts for bulk orders or loyalty programs
Partner with local vendors to source fresh ingredients
Improve the ambiance and seating arrangements
Implement online ordering and delivery services
Reviewing 30 million ads from 42 languages in Google AdWords and rejecting non-compliant ads requires a systematic approach.
Create a set of specific rules and guidelines for ad compliance
Use automated tools to filter out ads that violate the rules
Assign a team of reviewers to manually check the remaining ads
Ensure that the reviewers are fluent in the languages of the ads they are reviewing
Regularly update the rules and...
Multiple data structures are used to print nodes in a specific order. One data structure cannot be used alone.
The given order suggests a depth-first search traversal of a tree-like structure.
A stack can be used to keep track of the nodes to be visited.
A queue can be used to store the children of a node in the order they are visited.
An array can be used to store the nodes in the required order.
A linked list can be used ...
Find largest pen using minimum comparisons with tops.
Divide pens into two groups and compare largest pen from each group with largest top.
Repeat the process with the group containing the largest pen until only one pen is left.
The remaining pen is the largest pen.
Total number of comparisons required is 2n-3.
Given n dice with 'a' sides and sum b, return no. of ways to obtain b. Optimize time and space complexity.
Use dynamic programming to reduce time complexity
Create a 2D array to store the number of ways to obtain each sum for each number of dice
Use rolling arrays to optimize space complexity
Example: n=2, a=6, b=7 -> 6 ways to obtain sum 7
Example: n=3, a=4, b=8 -> 21 ways to obtain sum 8
Sort 128 GB data on 2 machines with 64 GB RAM each. Extend to 1000 machines.
Use external sorting algorithm like merge sort or quick sort
Divide data into smaller chunks and sort them individually
Merge sorted chunks using additional RAM
For 1000 machines, use distributed sorting algorithms like MapReduce or Hadoop
Ensure data consistency and fault tolerance in distributed sorting
I applied via Campus Placement and was interviewed in Feb 2021. There was 1 interview round.
I applied via Walk-in and was interviewed before Nov 2020. There were 4 interview rounds.
Attributes/qualities required for becoming a customer care executive
Excellent communication skills
Empathy and patience
Problem-solving abilities
Product knowledge
Ability to handle difficult customers
Time management and organizational skills
Positive attitude and professionalism
Ability to work in a team
Adaptability and flexibility
In the next 5 years, I see myself as an experienced and successful Trainer, leading a team and making a positive impact on the professional development of individuals.
Continuing to enhance my training skills and knowledge through professional development opportunities
Taking on leadership roles within the training department
Expanding my expertise in different training methodologies and technologies
Building strong relati...
Starting a career in the BPO industry offers various benefits such as skill development, career growth, and exposure to diverse industries.
Opportunity to develop communication and customer service skills
Exposure to different industries and clients
Career growth and advancement opportunities
Enhanced problem-solving and multitasking abilities
Development of teamwork and collaboration skills
Opportunity to work with internat
I applied via Campus Placement and was interviewed before Nov 2021. There were 3 interview rounds.
Numerical and logical aptitude test
There are 5 rounds on datastructure and algorithm
I applied via Job Fair and was interviewed before Dec 2021. There were 3 interview rounds.
Strictly know about advanced coding languages like python.
Be focus on aptitude and reasoning too....
I was interviewed before Sep 2020.
Round duration - 60 Minutes
Round difficulty - Easy
It was a hangout video call. The interviewer asked me these questions. Tell me about yourself and 1 coding question.
Your task is to find the total count of special numbers within a range from 1 to a given integer, 'MAXVAL'. A special number is defined as a number whose digits, when rot...
Count the total number of special numbers within a given range by rotating digits 180 degrees.
Create a function to check if a number is a special number by rotating its digits.
Iterate through the range from 1 to MAXVAL and count the special numbers.
Handle the digit rotation mapping for 0, 1, 6, 8, 9.
Return the count of special numbers for each test case.
Round duration - 60 Minutes
Round difficulty - Easy
This was an On-site (Behavioural Round) interview. He asked me these questions.
Round duration - 60 Minutes
Round difficulty - Easy
This was another On-site ( DS & Algo) algorithm.
As the Government ramps up vaccination drives to combat the second wave of Covid-19, you are tasked with helping plan an effective vaccination schedule. Your goal is...
Given constraints, find max vaccines administered on a specific day during a vaccination drive.
Iterate through each test case and calculate the maximum number of vaccines distributed on the specified day.
Distribute vaccines evenly across days while maximizing the number on the specified day.
Ensure that the sum of vaccines administered does not exceed the maximum allowed.
Consider edge cases like when the number of days ...
Round duration - 60 Minutes
Round difficulty - Easy
Another On-site ( DS & Algo) interview.
Given an array/list representing boards, where each element denotes the length of a board, and a number ‘K’ of available painters, determine the minimum time required...
Determine the minimum time required to paint all boards with given constraints.
Use binary search to find the minimum and maximum possible time to paint all boards.
Iterate through the boards and assign them to painters based on the time constraints.
Calculate the total time taken to paint all boards with the assigned painters.
You are given an array/list CHOCOLATES
of size 'N', where each element represents the number of chocolates in a packet. Your task is to distribute these chocolates among 'M'...
Distribute chocolates among students to minimize the difference between the largest and smallest number of chocolates.
Sort the array of chocolates.
Use sliding window technique to find the minimum difference between the largest and smallest number of chocolates.
Return the minimum difference as the output.
Round duration - 60 Minutes
Round difficulty - Easy
Another On-site ( DS & Algo) interview.
You are given an array of integers and an integer K
. For each array element, you can adjust it by increasing or decreasing it by a value of K
. Your goal is to minim...
Given an array of integers and an integer K, minimize the difference between the maximum and minimum elements after adjusting each element by +/- K.
Sort the array in non-decreasing order.
For each element, calculate the difference between the current element and the next element.
Adjust the element by adding or subtracting K to minimize the difference.
Return the minimum possible difference between the maximum and minimum
Round duration - 60 minutes
Round difficulty - Easy
On-site ( DS & Algo) interview.
Google mainly focuses on logic and how you are coming with a solution. It notes down each and every small mistake. Interviewers are really very helpful. They expect clear code with an optimal approach.
Given a binary square matrix 'ARR' with 'N' rows and 'N' columns, where '0' represents water and '1' represents land.
Determine the water cell whose distanc...
Find the water cell farthest from land in a binary matrix using Manhattan distance.
Iterate through the matrix to find all land cells and water cells
Calculate the Manhattan distance of each water cell to the nearest land cell
Return the maximum distance found
Tip 1 : Participate in coding contests.
Tip 2 : Practice as many questions as you can.
Tip 3 : Do some good projects.
Tip 1 : Have some projects on your resume.
Tip 2 : Do not put false things on your resume.
based on 2 interviews
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