Leetcode Problem 1994. The Number of Good Subsets
Leetcode Solutions
Dynamic Programming with Bitmasking and Prime Factorization
- Initialize a list of prime numbers less than 30.
- Create a bitmask for each number from 2 to 30 representing its prime factors.
- Initialize a DP table with 2^10 entries (for each possible combination of prime factors).
- Iterate over the numbers in the input array, updating the DP table based on the current number's bitmask.
- Handle the number 1 separately, as it can be included in any subset.
- Return the sum of the DP table (excluding the empty set) multiplied by 2^count[1] (for the number 1).
Backtracking with Prime Factorization
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