46. Permutations LeetCode
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题意:求1到n的全排列。
题解:STL之next_permutation.当然,可以自己递归实现。
class Solution {public: vector<vector<int>> permute(vector<int>& nums) { vector<vector<int>> ans; sort(nums.begin(),nums.end()); do { ans.push_back(nums); }while(next_permutation(nums.begin(),nums.end())); return ans; }};
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