剑指offer——滑动窗口的最大值

#include <iostream>
#include <vector>
using namespace std;

class Solution {
    public:
        vector<int> maxInWindows(const vector<int>& num, unsigned int size){
            vector<int> ans;
            if(num.empty() || size < 1 || num.size() < size){
                return ans;
            }
            for(int i = 0 ; i <= num.size()-size ; i++){
                int max = num[i];
                for(int j = i+1 ; j < i+size ; j++){
                    if(num[j] > max){
                        max = num[j];
                    }
                }
                ans.push_back(max);
            }
            return ans;
        }
};