又是滑动窗口的应用

class Solution {
public:
    /**
     * 代码中的类名、方法名、参数名已经指定,请勿修改,直接返回方法规定的值即可
     *
     * 
     * @param array int整型vector 
     * @return int整型vector
     */
    vector<int> FindGreatestSumOfSubArray(vector<int>& array) {
      std::vector<int> res;
      //  最大和、滑动窗口以及最大长度的左右区间
      int sum = 0, left = 0, right = 0, maxl = 0, maxr = 0;
      //  dp[i] 表示以下标i结尾的子数组的最大和
      std::vector<int> dp(array.size(), 0);
      
      if (array.empty()) {
        return res;
      }
      
      sum = dp[0] = array[0];
      
      for (int i = 1; i < array.size(); ++i) {
        ++right;
        
        dp[i] = std::max(dp[i - 1] + array[i], array[i]);
        
        //  更新区间
        if (dp[i - 1] + array[i] < array[i]) {
          left = right;
        }
        
        //  更新最大值
        if (dp[i] > sum || dp[i] == sum && (right - left + 1) > (maxr - maxl + 1)) {
          sum = dp[i];
          maxl = left;
          maxr = right;
        }
      }
      
      for (int i = maxl; i <= maxr; ++i) {
        res.push_back(array[i]);
      }
      
      return res;
    }
};