Zolo Hostel Warden Interview Questions and Answers

Round duration - 45 minutes
Round difficulty - Easy

This was a test where 2 coding questions were to be solved in 45 minutes.

Q1. 
Excel Column Number Conversion
Given a column title as it appears in an Excel sheet, your task is to return its corresponding column number.
Example:
Input:
S = "AB"
Output:
28
Explanation:
The seq...read more
Ans. 
Convert Excel column title to corresponding column number.
• Iterate through the characters in the input string from right to left

• Calculate the value of each character based on its position and multiply by 26^index

• Sum up the values to get the final column number
Answered by AI
Add your answer
Q2. 
Check Permutation Problem
Determine if two given strings, str1 and str2, are permutations of each other.
Explanation:
Two strings are permutations of each other if the characters of one string can be re...read more
Ans. 
Check if two strings are permutations of each other.
• Create character frequency maps for both strings.

• Compare the frequency maps to check if they are permutations.

• Handle edge cases like empty strings or strings of different lengths.
Answered by AI
Add your answer

Round duration - 60 Minutes
Round difficulty - Easy

Q1. 
0/1 Knapsack Problem Statement
A thief is planning to rob a store and can carry a maximum weight of 'W' in his knapsack. The store contains 'N' items where the ith item has a weight of 'wi' and a value of...read more
Ans. 
Yes, the 0/1 Knapsack problem can be solved using dynamic programming with a space complexity of not more than O(W).
• Use a 1D array to store the maximum value that can be stolen for each weight capacity from 0 to W.

• Iterate through each item and update the array based on whether including the item would increase the total value.

• The final value in the array at index W will be the maximum value that can be stolen.
Answered by AI
Add your answer
Q2. 
Find the Second Largest Element
Given an array or list of integers 'ARR', identify the second largest element in 'ARR'.
If a second largest element does not exist, return -1.
Example:
Input:
ARR = [2,...read more
Ans. 
Find the second largest element in an array of integers.
• Iterate through the array to find the largest and second largest elements.

• Handle cases where all elements are identical.

• Return -1 if a second largest element does not exist.
Answered by AI
Add your answer

Round duration - 60 Minutes
Round difficulty - Easy

System Design Round

Q1. Design a system for Twitter, discussing its architecture, key components, and scalability considerations.
Ans. 
Design a scalable system for Twitter with key components and architecture.
• Use microservices architecture for scalability and fault isolation.

• Key components include user service, tweet service, timeline service, and notification service.

• Use a distributed database like Cassandra for storing tweets and user data.

• Implement a message queue like Kafka for handling real-time updates and notifications.

• Use a caching layer like ...read more
Answered by AI
Add your answer

Round duration - 30 Minutes
Round difficulty - Easy

It is just a formality

Q1. Brief about your self
Add your answer
Q2. Sales experience
Ans. 
I have over 5 years of sales experience in various industries, consistently exceeding targets and building strong client relationships.
• Managed a portfolio of key accounts, increasing sales by 20% year over year

• Implemented successful sales strategies resulting in a 30% growth in revenue

• Utilized CRM software to track leads and follow up with prospects effectively
Answered by AI
Add your answer

Q1. Are you Flexible enough to work with in a city
Add your answer
Q2. What are the most important aspects of sales
Ans. 
The most important aspects of sales include building relationships, understanding customer needs, effective communication, and closing deals.
• Building relationships with customers to gain trust and loyalty

• Understanding customer needs and providing solutions that meet those needs

• Effective communication to convey the value of products or services

• Closing deals by overcoming objections and negotiating terms
Answered by AI
View 1 more answer

Q1. Past work experience
Add your answer
Q2. CP’s whom I have rapport with
Add your answer

Q1. Brief about your self
Add your answer
Q2. Sales experience
Ans. 
I have over 5 years of sales experience in various industries, consistently exceeding targets and building strong client relationships.
• Managed a portfolio of clients and consistently met or exceeded sales targets

• Developed and implemented sales strategies to increase revenue

• Built strong relationships with clients to ensure repeat business

• Utilized CRM systems to track sales progress and client interactions
Answered by AI
Add your answer

Q1. Salary and perks discussion
Add your answer