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.

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A recursive backtracking solution for the Subset Sum

Solution