void nextPermutation(vector<int> &num) { // Start typing your C/C++ solution below // DO NOT write int main() function int idx = num.size() - 1; bool inorder = true; while ( idx > 0) {if ((num[idx] > num[idx-1])) { ...
classSolution {public:voidnextPermutation(vector<int>&nums) {intn = nums.size(), i = n -2, j = n -1;while(i >=0&& nums[i] >= nums[i +1]) --i;if(i >=0) {while(nums[j] <= nums[i]) --j; swap(nums[i], nums[j]); } reverse(nums.begin()+ i +1, nums.end()...
反转k + 1 ~ n之间的元素。 由于这道题中规定对于[4,3,2,1], 输出为[1,2,3,4], 故在第一步稍加处理即可。 【参考答案】 www.jiuzhang.com/solutions/next-permutation/
next_Permutation Code 如下 代码解读 1classSolution {2public:3voidnextPermutation(vector<int> &num) {4//Start typing your C/C++ solution below5//DO NOT write int main() function6inti;7vector<int>::iterator iter =num.end();8intmaxNum =INT_MIN;910//step 1, find the first number which...
classSolution{publicvoidnextPermutation(int[]nums){intN=nums.length;// find the first(from right to left) bit that is smaller than its right friends// call this bit number selectedNumberintfirstDecreasingBit=-1;for(inti=N-2;i>=0;i--){if(nums[i]<nums[i+1]){firstDecreasingBit=i;brea...
classSolution{publicvoidnextPermutation(int[]nums){if(nums==null||nums.length==0||nums.length==1){return;}intn=nums.length;intfirst=-1;for(intj=n-1;j>0;j--){if(nums[j-1]<nums[j]){first=j-1;break;}}if(first==-1){Arrays.sort(nums);return;}intminNext=Integer.MAX_VALUE;int...
while(next_permutation(str.begin(),str.end())) { num++; cout<<str<<endl; if(num==5) break; } return 0; } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 对容器: class Solution { public: vector<vector<int>> permuteUnique(vector<int>& nums) { ...
31. Next Permutation 题目描述(中等难度) 这道题的的难度我觉得理解题意就占了一半。题目的意思是给定一个数,然后将这些数字的位置重新排列,得到一个刚好比原数字大的一种排列。如果没有比原数字大的,就升序输出。 关键就是刚好是什么意思?比如说原数字是 A,然后将原数字的每位重新排列产生了 B C D E,...
next_permutation函数在头文件<algorithm>中,作用是是生成给定序列的下一个较大排序,直到序列按降序排列为止。到这里还需要强调的一点是,如果你希望生成所有的排列方式,一定要先将序列按升序排列,这里可以与sort函数结合起来使用,先用sort升序排列,再调用next_permutation函数。 class Solution { public: string getPermut...
permutation of an array of integers is an arrangement of its members into a sequence or linear order. For example, for arr = [1,2,3], the following are all the permutations of arr: [1,2,3], [1,3,2], [2, 1, 3], [2, 3, 1], [3,1,2], [3,2,1]....