  In this exploration paper, we design algorithms for deforming and contracting
a simply connected discrete closed manifold to a discrete sphere. Such a
contraction is a kind of shrinking or reducing process. In our algorithms, we
need to assume an ambient space for the discrete manifold, and this ambient
space also a simply connected discrete space in higher dimensions.
  Our algorithm would work for most of cases. For some special cases, we will
make detailed analysis in the next paper. In other words, this paper has not
provided a complete proof for each case. The algorithm designed in this paper
is in polynomial time.
