Using the reduce-and-conquer technique (specifically a fixed number of reduce and conquer, a fixed number of 1), Design and describe the algorithm that finds all subsets of a given n-element set A =...

Using the reduce-and-conquer technique (specifically a fixed number of reduce and conquer, a fixed number of 1),
Design and describe the algorithm that finds all subsets of a given n-element set A = {a1, a2, ………, an}, and also write it as pseudocode.
You may think that the algorithm you will write takes a list / array as input (without element repetition) and returns a list / array of tuples as output.
Each tuple in the returned list must represent a different subset of the input set.