Cloudflare Interview Questions

Implement a circular queue data structure with a fixed size. You'll need to handle enqueueing, dequeueing, and checking if the queue is full or empty efficiently.

Find all unique triplets in an array that sum to zero. You'll need to consider the potential for duplicate numbers and avoid duplicate triplets in your solution.

Find all unique quadruplets in an array that sum to a target value. You'll need to efficiently search for combinations of four numbers that satisfy the given condition.

Starting from (0, 0), can you reach a target point (tx, ty) by repeatedly applying the transformation (x, y) -> (x, x+y) or (x, y) -> (x+y, y)? Determine if it's possible.

Design a stack data structure with a fixed size. Implement push, pop, and an increment operation that adds a value to the bottom k elements of the stack.

Design a data structure that acts as a Least Recently Used (LRU) cache. Implement methods to get and put key-value pairs, evicting the least recently used entry when the cache is full.

Design a hit counter to track the number of hits recorded in the past 5 minutes. Implement methods to record a hit and retrieve the total hits in the past 5 minutes.

Given a grid representing land and water, count the number of distinct islands. An island is formed by connected land cells.

Write a program that prints numbers from 1 to n, replacing multiples of 3 with "Fizz", multiples of 5 with "Buzz", and multiples of both with "FizzBuzz".

Simulate the Game of Life, updating the state of a board based on the rules of cell survival and death in each generation. Modify the board in place to represent the next generation.