Interview Questions

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6,535 questions
548 companies
49 roles
Last updated Nov 2026

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Senior Software EngineerGoogle·7 questions

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Product ManagerMeta·6 questions

Product ManagerPerplexity AI·6 questions

Program EngineerAnduril·8 questions

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Staff Software Engineer, InfrastructureAnthropic·6 questions

Product Manager, GeminiGoogle·7 questions

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Growth Lead (B2B / ChatGPT Team)OpenAI·9 questions

Senior Full Stack EngineerNetflix·6 questions

Implement an object-pool allocator in which objects are allocated on one thread and freed on another.
12 hours ago
Implement a lock-free single-producer single-consumer queue in C++.
12 hours ago
Calculate all of the possible knight moves on a chess board.
12 hours ago
Design, then implement, a pro-rata order book, in which fills at a price level are shared in proportion to resting order size instead of by time priority.
10 months ago
Roll four fair dice. What is the probability that the three smallest results sum to 3?
2 years ago
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What is the difference between a C string and a C++ string? What is a function pointer?
2 years ago
Determine whether an element is present in a matrix whose rows and columns are all sorted.
+312 hours ago
Code a stack that also returns its maximum element.
2 years ago
What is the difference between stack and heap memory in C++?
10 months ago
Thirteen face-down cards, ace to king: one chip buys the difference between any two, and at the end you are paid the product of two cards you pick. What would you pay to play?
6 years ago
How would you predict rental prices in a given city? Cover data collection, processing, model choice, the data split and feature selection.
4 years ago
How does Optiver make money?
12 hours ago
Yellow buses are late 1/6 of the time and green buses 1/8. A randomly boarded bus is late, and the chance it was green is 1/3. How many yellow buses are there per green bus?
2 years ago
You are given four months of high-frequency price and volume data for five stocks. How would you forecast each stock's volatility over the following month?
12 hours ago
Two evenly matched teams play games until one has won three. What is the expected difference between the number of games won by the winner and by the loser?
2 years ago
Someone claims he can tell the colour of an M&M by taste. There are five colours, and he gets 2 of 3 right. What can you say about his claim?
4 years ago
Design an in-memory hotel booking system and say which data structures you would use and why.
2 years ago
A random walk moves on a grid with a boundary. Compute the probability that the walk hits the boundary within N steps.
6 years ago
How do hash tables resolve collisions: separate chaining versus open addressing and probing types, and which is more efficient?
2 years ago
Implement a K-way merge of K sorted arrays, where the arrays are loaded from disk through a file reader.
10 months ago

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Interview Questions

Implement an object-pool allocator in which objects are allocated on one thread and freed on another.

Implement a lock-free single-producer single-consumer queue in C++.

Calculate all of the possible knight moves on a chess board.

Design, then implement, a pro-rata order book, in which fills at a price level are shared in proportion to resting order size instead of by time priority.

Roll four fair dice. What is the probability that the three smallest results sum to 3?

What is the difference between a C string and a C++ string? What is a function pointer?

Determine whether an element is present in a matrix whose rows and columns are all sorted.

Code a stack that also returns its maximum element.

What is the difference between stack and heap memory in C++?

Thirteen face-down cards, ace to king: one chip buys the difference between any two, and at the end you are paid the product of two cards you pick. What would you pay to play?

How would you predict rental prices in a given city? Cover data collection, processing, model choice, the data split and feature selection.

How does Optiver make money?

Yellow buses are late 1/6 of the time and green buses 1/8. A randomly boarded bus is late, and the chance it was green is 1/3. How many yellow buses are there per green bus?

You are given four months of high-frequency price and volume data for five stocks. How would you forecast each stock's volatility over the following month?

Two evenly matched teams play games until one has won three. What is the expected difference between the number of games won by the winner and by the loser?

Someone claims he can tell the colour of an M&M by taste. There are five colours, and he gets 2 of 3 right. What can you say about his claim?

Design an in-memory hotel booking system and say which data structures you would use and why.

A random walk moves on a grid with a boundary. Compute the probability that the walk hits the boundary within N steps.

How do hash tables resolve collisions: separate chaining versus open addressing and probing types, and which is more efficient?

Implement a K-way merge of K sorted arrays, where the arrays are loaded from disk through a file reader.

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