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looping-while-until-online-web-pt-011419's Introduction

The while and until Constructs

Objectives

  1. Build a method that uses while
  2. Build a method that uses until

Using while and until

It's our first year at Hogwarts and we're struggling to master the levitation charm, "Wingardium Leviosa". Currently, we have a levitation force of 6. We need to have a levitation force of 10 in order to actually levitate that feather.

First, we'll write a while loop that will continue to puts the phrase "Wingardium Leviosa" while our levitation force is less than 10. Every time we puts that phrase, we should increment our levitation force by 1.

Then, we'll solve this again by using an until loop. It will puts the phrase "Wingardium Leviosa" until the levitation force is equal to 10, incrementing the levitation force by 1 each time we puts the phrase.

Instructions

  1. Run the test suite in this lab to get started.

  2. Let's get the first test passing by coding our solution in while.rb: Fill out the content of the using_while method so that calling it will puts the desired phrase while your levitation force is less than 10. Remember, every time you puts the phrase, you should increment your levitation force by 1.

  3. Let's get the second test passing by coding our solution in until.rb: Fill out the content of the using_until method to puts the desired phrase, "Wingardium Leviosa", until our levitation force equals 10. Remember, every time you puts the phrase, you should increment your levitation force by 1.

Hint: If you get stuck an infinite loop when you run your tests or your code, you can abort the test run or code by pressing CONTROL+C on your keyboard.

View While and Until Loops Lab on Learn.co and start learning to code for free.

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