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  1. #include <iostream>
  2. #include <vector>
  3. #include <deque>
  4. using namespace std;
  5. class Solution {
  6. public:
  7.     vector<int> maxSlidingWindow(vector<int>& nums, int k) {
  8.         deque<int> dq;
  9.         vector<int> res;
  10.         for(int i = 0; i < nums.size(); i++) {
  11.             if (dq.front() == i - k) dq.pop_front();
  12.             while (!dq.empty() && nums[dq.back()] < nums[i]) {
  13.                 dq.pop_back();
  14.             }
  15.             dq.push_back(i);
  16.             if (i >= k - 1) res.push_back(nums[dq.front()]);
  17.         }
  18.         return res;
  19.     }
  20. };
  21. int main() {
  22.     Solution solution;
  23.     vector<int> nums = {1, 3, -1, -3, 5, 3, 6, 7};
  24.     int k = 3;
  25.     vector<int> result = solution.maxSlidingWindow(nums, k);
  26.     for (int i = 0; i < result.size(); i++) {
  27.         cout << result[i] << " ";
  28.     }
  29.     cout << endl;
  30.     return 0;
  31. }
  32.  
Success #stdin #stdout 0s 5296KB
comments (?)
stdin 
Standard input is empty
stdout 
3 3 5 5 6 7
https://ideone.com/ZlRsyb
language:
C++14 (gcc 8.3)
created:
14 days ago
visibility:
public

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