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题目 Given two integersnandk, return all possible combinations ofknumbers out of 1 ...n. Example: Input:n = 4, k = 2 Output: [ [2,4], [3,4], [2,3], [1,2], [1,3], [1,4], ] 解题思路...

题目 Given asetof candidate numbers (candidates)(without duplicates)and a target number (target), find all unique combinations incandidateswhere the candidate numbers sums totarget. Thesame...

题目 Given a collection of candidate numbers (candidates) and a target number (target), find all unique combinations incandidateswhere the candidate numbers sums totarget. Each number incandidate...