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Run options: include {:locations=>{"./spec/string_permutations_iterative_spec.rb"=>[13]}}

String
  #permutations
op_count: 1
op:  + A
current strings: []
current stack: ["A:BC"]
-----------
op_count: 2
op:  + B
current strings: []
current stack: ["A:BC", "B:AC"]
-----------
op_count: 3
op:  + C
current strings: []
current stack: ["A:BC", "B:AC", "C:AB"]
-----------
op_count: 4
op: C + A
current strings: []
current stack: ["A:BC", "B:AC", "CA:B"]
-----------
op_count: 5
op: C + B
current strings: []
current stack: ["A:BC", "B:AC", "CA:B", "CB:A"]
-----------
op_count: 6
op: CB + A
current strings: []
current stack: ["A:BC", "B:AC", "CA:B", "CBA:"]
-----------
op_count: 7
op: CA + B
current strings: ["CBA"]
current stack: ["A:BC", "B:AC", "CAB:"]
-----------
op_count: 8
op: B + A
current strings: ["CBA", "CAB"]
current stack: ["A:BC", "BA:C"]
-----------
op_count: 9
op: B + C
current strings: ["CBA", "CAB"]
current stack: ["A:BC", "BA:C", "BC:A"]
-----------
op_count: 10
op: BC + A
current strings: ["CBA", "CAB"]
current stack: ["A:BC", "BA:C", "BCA:"]
------------
op_count: 11
op: BA + C
current strings: ["CBA", "CAB", "BCA"]
current stack: ["A:BC", "BAC:"]
------------
op_count: 12
op: A + B
current strings: ["CBA", "CAB", "BCA", "BAC"]
current stack: ["AB:C"]
------------
op_count: 13
op: A + C
current strings: ["CBA", "CAB", "BCA", "BAC"]
current stack: ["AB:C", "AC:B"]
------------
op_count: 14
op: AC + B
current strings: ["CBA", "CAB", "BCA", "BAC"]
current stack: ["AB:C", "ACB:"]
------------
op_count: 15
op: AB + C
current strings: ["CBA", "CAB", "BCA", "BAC", "ACB"]
current stack: ["ABC:"]
------------
    returns all permutations of a length 3 string

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1 example, 0 failures