题目: Given a collection of numbers that might contain duplicates, return all possible unique permutations. For example, [1,1,2] have ...
Given a collection of numbers that might contain duplicates, return all possible unique permutations. For example, , , have the following unique permutations: , , , , , , and , , . 先对数组进行排序,这样在DFS的时候, ...
2012-11-13 21:22 0 4020 推荐指数:
题目: Given a collection of numbers that might contain duplicates, return all possible unique permutations. For example, [1,1,2] have ...
原题地址:https://oj.leetcode.com/problems/permutations-ii/ 题意: Given a collection of numbers that might contain duplicates ...
Permutations Given a collection of numbers, return all possible permutations. For example, [1,2,3] have the following permutations: [1,2,3], [1,3,2 ...
Permutations II Given a collection of numbers that might contain duplicates, return all possible unique permutations. For example,[1,1,2] have ...
Permutations II Given a collection of numbers that might contain duplicates, return all possible unique permutations.For example,[1,1,2] have ...
Given a collection of numbers that might contain duplicates, return all possible unique permutations. Example: 这道题是之前那道 Permutations 的延伸 ...
这个比一般的backtrack要难一点,有2个限制因素。 某个元素在某次递归中只能用一次。 重复。 主要就是这2个因素。 先SORT一下。 用visited[]记录哪个元素用过,用过直接跳过 ...
题目: Given a collection of numbers, return all possible permutations. For example, [1,2,3] have the following permutations: [1,2,3], [1,3,2 ...