Question

A recursive backtracking solution for the Subset Sum problem is generating duplicate subsets or missing valid subsets. Assuming the input array might contain duplicates, what is a crucial step often overlooked or incorrectly implemented to handle this?

A Not sorting the input array initially.
B Incorrectly updating the current_sum in recursive calls.
C Failing to pop elements from the current_subset during backtracking.
D Not skipping duplicate elements in the iteration loop to avoid redundant paths.
E The base case for current_sum == target is missing.
Practice Next

Hey! Ask a query