Algorithm		Complexity		Sparsity Range (k)
sFFT 1.0 (Non-Iterative Alghorithm)	::
sFFT 2.0 (sFFT 1.0 + Heuristic)	::
sFFT 3.0 (Exact k Sparse Algorithm)	::
sFFT 4.0 (General k Sparse Algorithm)	::
Lower Bound	::