Re-order ruby array

Question

I have a ruby array:

["A", "C", "B", "D", "F", "E"]

User will supply an input, e.g.

input = "B"

I want to shift the values in the array, so the first item of the array equals input, and get the result of a new array:

["B", "D", "F", "E", "A", "C"]

User will be choosing from a dropdown options, so they can only choose the letters from original array.

Sagar Pandya · Accepted Answer · 2018-06-25 02:56:47Z

5

arr = ["A", "C", "B", "D", "F", "E"]

arr.rotate(arr.index('B'))
 #=> ["B", "D", "F", "E", "A", "C"]

answered Jun 25, 2018 at 2:56

Sagar Pandya

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