Interview Questions

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

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Senior Software EngineerGoogle·7 questions

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Senior Full Stack EngineerNetflix·6 questions

Artifacts are buried in an N x N grid, each in a rectangle of at most 4 cells. Given the cells that were dug, count the artifacts fully uncovered and those only partly uncovered.
19 hours ago
Given two lists of (timestamp, value) tuples representing time series, merge them into one time series represented as a list of tuples.
2 years ago
Process a stream of trades and price updates and, on request, report the trade on an instrument with the largest loss per lot.
4 years ago
How does a vector resize? What does push_back cost if the vector grows by 10% each time, or by a constant K elements, instead of doubling?
4 years ago
Design a hit counter over the last 5 minutes in which each hit also carries a payload of a few KB, and the payloads do not fit in memory.
4 years ago
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Given a set of currency exchange rates, design a data structure and a function that takes two currencies and an amount and returns the converted amount.
10 months ago
You and I each roll a 20-sided die and the higher roll wins $100, rerolling ties. How much would you pay for the option to roll a 30-sided die instead?
19 hours ago
You roll a fair die and get X, I roll a fair die and get Y, and you are paid max(X - Y, 0). How much would you pay to play?
19 hours ago
On an 8 by 8 chessboard, a knight goes from the bottom-left corner to the top-right corner in at most 20 moves and may revisit squares. How many different move sequences are there?
5 years ago
Flipping a fair coin repeatedly, what is the expected number of flips until the pattern HHHHT first appears?
19 hours ago
How can you improve the Sharpe ratio of an alpha? Is the Sharpe ratio a good performance measure?
3 years ago
Given an array of values and a matching array of weights, define the weighted median yourself and find it.
5 years ago
How does a market maker make money in a market with high volatility?
4 years ago
Find the next term of the sequence 12, 28, 36, 84, 88, 168.
2 years ago
Describe the different ways packets can be lost in different network setups.
2 years ago
Find the next term of the sequence 1, 2, 5, 11, 26, 59.
10 months ago
Implement a decorator in Python.
3 years ago
Find the next term of the sequence 4/3, 1, 5, 8, 23, 47.
2 years ago
Design a linked list class.
19 hours ago
Find the first occurrence of a given value in a sorted list.
19 hours ago

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Interview Questions

Artifacts are buried in an N x N grid, each in a rectangle of at most 4 cells. Given the cells that were dug, count the artifacts fully uncovered and those only partly uncovered.

Given two lists of (timestamp, value) tuples representing time series, merge them into one time series represented as a list of tuples.

Process a stream of trades and price updates and, on request, report the trade on an instrument with the largest loss per lot.

How does a vector resize? What does push_back cost if the vector grows by 10% each time, or by a constant K elements, instead of doubling?

Design a hit counter over the last 5 minutes in which each hit also carries a payload of a few KB, and the payloads do not fit in memory.

Given a set of currency exchange rates, design a data structure and a function that takes two currencies and an amount and returns the converted amount.

You and I each roll a 20-sided die and the higher roll wins $100, rerolling ties. How much would you pay for the option to roll a 30-sided die instead?

You roll a fair die and get X, I roll a fair die and get Y, and you are paid max(X - Y, 0). How much would you pay to play?

On an 8 by 8 chessboard, a knight goes from the bottom-left corner to the top-right corner in at most 20 moves and may revisit squares. How many different move sequences are there?

Flipping a fair coin repeatedly, what is the expected number of flips until the pattern HHHHT first appears?

How can you improve the Sharpe ratio of an alpha? Is the Sharpe ratio a good performance measure?

Given an array of values and a matching array of weights, define the weighted median yourself and find it.

How does a market maker make money in a market with high volatility?

Find the next term of the sequence 12, 28, 36, 84, 88, 168.

Describe the different ways packets can be lost in different network setups.

Find the next term of the sequence 1, 2, 5, 11, 26, 59.

Implement a decorator in Python.

Find the next term of the sequence 4/3, 1, 5, 8, 23, 47.

Design a linked list class.

Find the first occurrence of a given value in a sorted list.

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