added code for apt set 2 SandwichBar challenge - passes all tests
added code for apt set 2 Anonymous challenge - passes 23/30 tests
added code for apt set 2 Anonymous challenge - passes all tests
added code for apt set 2 IsoMorphicWords challenge - passes 49/81 tests
added code for apt set 2 IsoMorphicWords challenge - passes 72/81 tests
added code for apt set 2 IsoMorphicWords challenge - passes all tests