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This is a medium difficulty Coding & Algorithms question, commonly asked during Onsite rounds at Uber.

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This question is commonly asked for Data Scientist candidates at Uber during technical interviews.

Implement FizzBuzz

Last updated: Apr 11, 2026

Quick Overview

This question evaluates basic programming and algorithmic reasoning, including control flow, modular arithmetic, string handling, and the ability to analyze time and space complexity.

Uber

Mar 22, 2026, 12:00 AM

Data Scientist

Onsite

Coding & Algorithms

Implement the classic FizzBuzz problem.

Given a positive integer n, return the sequence from 1 to n as strings with the following rules:

If a number is divisible by 3 , output "Fizz"
If a number is divisible by 5 , output "Buzz"
If a number is divisible by both 3 and 5 , output "FizzBuzz"
Otherwise, output the number itself as a string

Example for n = 15: ["1", "2", "Fizz", "4", "Buzz", "Fizz", "7", "8", "Fizz", "Buzz", "11", "Fizz", "13", "14", "FizzBuzz"]

Discuss time and space complexity.

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