Deleting While Iterating in Ruby?

Question

I\'m iterating over a very large set of strings, which iterates over a smaller set of strings. Due to the size, this method takes a while to do, so to speed it up, I\'m tryi

Answer 1

use 'arr.shift'

a=[1,2,3,4]
while(a.length!=0)
  print a
  a.shift
  print "\n"
end

Output:

[1, 2, 3, 4]
[2, 3, 4]
[3, 4]
[4]

Answer 2

use delete_if

array.delete_if do |v|
    if v.should_be_deleted?
        true
    else
        v.update
        false
    end
end