Combination Sum · Coding Interview Practice

Combination SumGiven distinct candidates and a target, return all unique combinations that sum to the target. Candidates may be reused.Constraints

1 <= candidates.length <= 30

2 <= candidates[i] <= 40

1 <= target <= 40

Examples

Input: candidates = [2,3,6,7], target = 7 Output: [[2,2,3],[7]]

Input: candidates = [2,3,5], target = 8 Output: [[2,2,2,2],[2,3,3],[3,5]]

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