How to create an arbitrary state for debugging purposes in the local computer?

Question

Is there a way to create an arbitrary state in Q# just for debugging purposes in the local computer via the quantum full state simulator?

Answer 1

Modern QDK (version 1.*): You can use the library operations PreparePureStateD (arbitrary real amplitudes) or ApproximatelyPreparePureStateCP (complex amplitudes, with a possibility of approximate state preparation) to prepare an arbitrary state starting from the $|0..0\rangle$ state.

Classic QDK (version 0.*): You can use the library operations PrepareArbitraryStateD (real non-negative amplitudes) or PrepareArbitraryStateCP (complex amplitudes) to prepare an arbitrary state starting from the $|0..0\rangle$ state.