if len(tmp) == len(nums): This is my personal record of solving Leetcode Problems. If you have any questions, please discuss them in [Issues](https://github.com ...

Given a collection of numbers that might contain duplicates, return all possible unique permutations. For example, [1,1,2] have the following unique permutations: [1 ...

現在ITエンジニアとして働いていますが、コーディング・アルゴリズム力をもっと鍛えたいと思い、LeetCodeで学んだ内容をメモ的にアウトプットしています。 今回解いてみた問題は「39. Combination Sum」です。 Pythonのitertools.permutations関数は順列を効率的に生成する ...

Backtracking has proven itself to be a universal algorithmic technique that can be applied while solving all kinds of computational problems, from the most primitive (such as counting all possible ...