Groupon Interview Guide

Showing 3 of 4 questions

Ranking

A question's ranking corresponds to how commonly it's asked by Groupon. The higher the ranking, the more likely you'll encounter it in a Groupon interview.

Question

Frequency

Difficulty

Sell Diminishing-Valued Colored Balls

You are given an inventory of colored balls, each with a value equal to its count. Determine the maximum total value you can obtain by selling a limited number of these balls, given that each sale reduces the ball's value by one.

ArraysBinary SearchGreedy Algorithms

Very likely

If you have a Groupon interview, it's very likely that you will get this question

Medium

#1. Sell Diminishing-Valued Colored Balls

Medium

ArraysBinary SearchGreedy Algorithms

This question is very likely to be asked in your Groupon interview

Insert Delete GetRandom O(1)

Design a data structure that supports insertion, deletion, and random element retrieval, all in constant time on average. You'll need to handle edge cases carefully to achieve O(1) complexity.

Arrays

Somewhat likely

If you have a Groupon interview, you might get this question

Medium

#2. Insert Delete GetRandom O(1)

Medium

Design a data structure that supports insertion, deletion, and random element retrieval, all in constant time on average. You'll need to handle edge cases carefully to achieve O(1) complexity.

Arrays

This question is somewhat likely to be asked in your Groupon interview

Find the Winner of the Circular Game

Imagine people in a circle, eliminating every kth person. Determine who is the last person remaining after this process.

ArraysRecursionLinked Lists

Not likely

If you have a Groupon interview, it's unlikely that you will get this question. Groupon does ask it, but it's rare

Medium

#3. Find the Winner of the Circular Game

Medium

Imagine people in a circle, eliminating every kth person. Determine who is the last person remaining after this process.

ArraysRecursionLinked Lists

This question is not likely to be asked in your Groupon interview