ArrayReversal

ArrayReversal.rb

require 'minitest/autorun'

describe Array do
  before do
    @ary = %w(a b c d e)
    @temp = ""
  end

  it 'it can be reversed in place' do
    # YOUR SOLUTION HERE
    n = @ary.length/2
    n.times do |i|
      @temp = @ary[-(i+1)]
      @ary[-(i+1)] = @ary[i]
      @ary[i] = @temp
    end

    @ary.must_equal %w(e d c b a)
  end
end