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BSS
  can permutate A into B given a list of swaps (FAILED - 1)
  all together now (FAILED - 2)
  #apply_swap!
    works for 2 elements
    works for 4 elements
  #swaps
    works for 2 elements
    works for 3 elements
    works for 5 elements
    works for 6 elements
    works when there is a slight change
    does nothing when the sequences are the same

Array
  #swap_indices!
    swaps elements of an array at the given indices

Failures:

  1) BSS can permutate A into B given a list of swaps
     Failure/Error: source.should eq(target)
       
       expected: [1, 3, 4, 2]
            got: [1, 4, 2, 3]
       
       (compared using ==)
     # ./spec/bss_spec.rb:10:in `block (2 levels) in <top (required)>'

  2) BSS all together now
     Failure/Error: source.should eq(target)
       
       expected: [0, 1, 3, 7, 9]
            got: [1, 9, 0, 7, 3]
       
       (compared using ==)
     # ./spec/bss_spec.rb:19:in `block (2 levels) in <top (required)>'

Finished in 0.00226 seconds
11 examples, 2 failures

Failed examples:

rspec ./spec/bss_spec.rb:4 # BSS can permutate A into B given a list of swaps
rspec ./spec/bss_spec.rb:13 # BSS all together now