by AskAI

Solutions:

Check these solutions from our community and artificial intelligence:
The candidate's solution is a recursive function that takes in the input array and the current subset. The function iterates through the input array and adds each element to the current subset. It then calls itself with the input array and the new subset. The function also calls itself with the input array and the current subset. This allows the function to create all possible subsets. The function returns a list of all possible subsets. The function also adds the empty set to the list of subsets. The solution is correct and solves the problem. The approach is good, but could be more concise. For example, the helper function could be written as: def helper(nums, subset): subsets = [] for i in range(len(nums)): new_subset = subset + [nums[i]] subsets.append(new_subset) subsets += helper(nums[i+1:], new_subset) return subsets