Looping through an array with step

Question

I want to look at every n-th elements in an array. In C++, I\'d do this:

for(int x = 0; x

        

Answer 1

Ranges have a step method which you can use to skip through the indexes:

(0..array.length - 1).step(2).each do |index|
  value_you_care_about = array[index]
end

Or if you are comfortable using ... with ranges the following is a bit more concise:

(0...array.length).step(2).each do |index|
  value_you_care_about = array[index]
end