The problem is to find all possible subsets (power set) of a given set of distinct integers.An iterative solution involves using two loops to add elements iteratively.A backtracking solution uses recursion to generate subsets.For the input [1, 2, 3], the output subsets are [[], [1], [2], [1, 2], [3], [1, 3], [2, 3], [1, 2, 3]].