How to change the position of an array element?

Question

I have a question on how I can change the index of a array element, so that it doesn\'t come at the 7. position but at position 2 instead...

Is there a function to h

Answer 1

If you don't care about the position of the other elements in the array you can use the .rotate! (note that the ! at the end of this method changes the actual array) method.

arr = [1, 2, 3, 4, 5, 6, 7, 8]
arr.rotate! -3
arr = [6, 7, 8, 1, 2, 3, 4, 5]

This takes the element 8 which is at index 7, and rotates it to an index of 2.