摘要： Question:Given a list of numbers with duplicate number in it. Find alluniquepermutations.Example:For numbers[1,2,2]the unique permutations are:[ [1,2... 阅读全文

摘要： Question:Given a set of distinct integers, return all possible subsets.Example:If S =[1,2,3], a solution is:[ [3], [1], [2], [1,2,3], [1,3], [2,... 阅读全文