Stacks 1-D and 2-D arrays as columns into a 2-D array.

A 1-D array is first converted to a 2-D column array. Then, the 2-D arrays are concatenated along the second axis.

Parameters:tup (sequence of arrays) – 1-D or 2-D arrays to be stacked.
Returns:A new 2-D array of stacked columns.
Return type:cupy.ndarray