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Raindrops

Raindrops

Easy
OverviewCommunity Solutions

Introduction

Raindrops is a slightly more complex version of the FizzBuzz challenge, a classic interview question.

Instructions

Your task is to convert a number into its corresponding raindrop sounds.

If a given number:

  • is divisible by 3, add "Pling" to the result.
  • is divisible by 5, add "Plang" to the result.
  • is divisible by 7, add "Plong" to the result.
  • is not divisible by 3, 5, or 7, the result should be the number as a string.

Examples

  • 28 is divisible by 7, but not 3 or 5, so the result would be "Plong".
  • 30 is divisible by 3 and 5, but not 7, so the result would be "PlingPlang".
  • 34 is not divisible by 3, 5, or 7, so the result would be "34".
Note

A common way to test if one number is evenly divisible by another is to compare the remainder or modulus to zero. Most languages provide operators or functions for one (or both) of these.

Try to focus on using Test Driven Development for this exercise. Run the tests, one by one and try to solve the problem incrementally as it unfolds. When everything passes, see if you can refactor it to make it less repetitive.

Source

A variation on FizzBuzz, a famous technical interview question that is intended to weed out potential candidates. That question is itself derived from Fizz Buzz, a popular children's game for teaching division.The link opens in a new window or tab
Edit via GitHub The link opens in a new window or tab
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Deep Dive into Raindrops!

Explore solutions using functional pipelines, matrix multiplication, a precalculated table-based solutions using a macro, an Object Oriented approach, some impressive use of both Python and TCL, and an enterprise edition.