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1. How to encrypt a set of string e.g. WAAAYYFFFFFAIIIRR to W1A3Y2F4A1I3R2 etc... And how to decrypt it back to original string (2 separate functions) 2. How to design a system so that user can check in their location thru their phone, and how to scale it when the app gets popular and millions of users are using it. How would you expand the application features when popularity grows. 3. How to design a database of Warehouse, Suppliers and Customers and they ask you to write various SQL queries to pull products sold, how many customers bought more than 30 products etc 4. A coding problem to simulate the coin game and gambler's fallacy (if they are 4 Heads in a row, gambler would bet on Tail, and vice versa).
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Senior Software Engineer

Interviewed at Wayfair

3.1★
May 23, 2019

1. How to encrypt a set of string e.g. WAAAYYFFFFFAIIIRR to W1A3Y2F4A1I3R2 etc... And how to decrypt it back to original string (2 separate functions) 2. How to design a system so that user can check in their location thru their phone, and how to scale it when the app gets popular and millions of users are using it. How would you expand the application features when popularity grows. 3. How to design a database of Warehouse, Suppliers and Customers and they ask you to write various SQL queries to pull products sold, how many customers bought more than 30 products etc 4. A coding problem to simulate the coin game and gambler's fallacy (if they are 4 Heads in a row, gambler would bet on Tail, and vice versa).

Implement a class called AirMap that has two methods: 1. add_route(start, destination) - adds ONE WAY connecting flight from one airport to another 2. print_all_routes(start, destination) - prints all possible routes from start to destination Given the following routes, print all possible routes between the airport C and D: A -----> B B -----> A A -----> C C -----> A A -----> D D -----> A B -----> C C -----> B B -----> D D -----> B Expected Output: C,A,B,D C,A,D C,B,A,D C,B,D
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Senior Software Engineer

Interviewed at Bloomberg

4★
Nov 1, 2021

Implement a class called AirMap that has two methods: 1. add_route(start, destination) - adds ONE WAY connecting flight from one airport to another 2. print_all_routes(start, destination) - prints all possible routes from start to destination Given the following routes, print all possible routes between the airport C and D: A -----> B B -----> A A -----> C C -----> A A -----> D D -----> A B -----> C C -----> B B -----> D D -----> B Expected Output: C,A,B,D C,A,D C,B,A,D C,B,D

Anti-freeze: planning to buy a company with 12.5 in cash, 10% bonds for the remaining amount. Total worth of the company $137.5. assuming there is no discount rate. When will u break-even. And is it a good buy? Part(2) - Anti-freeze is currently priced at $8, with 60% market share; there are other products in the market(A) priced at $7 with 15% market share, (B) at $7 with 7% market share and (c) with $5 and 10% market share. Should we consider decreasing our price by $1 or NOT?
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Senior Business Analyst

Interviewed at Capital One

Dec 5, 2011

Anti-freeze: planning to buy a company with 12.5 in cash, 10% bonds for the remaining amount. Total worth of the company $137.5. assuming there is no discount rate. When will u break-even. And is it a good buy? Part(2) - Anti-freeze is currently priced at $8, with 60% market share; there are other products in the market(A) priced at $7 with 15% market share, (B) at $7 with 7% market share and (c) with $5 and 10% market share. Should we consider decreasing our price by $1 or NOT?

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