百度搜索部，止步二面～

test sum

2 5 6 3 2 2 6
15
int findMin(vector<int> result){
    int min = -1;
    if(result.size()==0){
        min = -1;
    }else{
        for(int i = 0;i<result.size();i++){
            if(result[i]<min)
                min = result[i];
        }
    }
    return min;
}
int getMinLength(vecotr<int> &Array, int n){
    if(Array.size()==0) return -1;
    int sum = Array[0];
    int begin = 0;
    int end = 0;
    int temp = 0;
    vector<int> result;
    for(int i = 1;i<Array.size();i++){
        if(sum < n){
            sum += Array[i];
            end = i;
        }else{
          //  here
          // 2 5 6 3 2 2 6
            temp = end - begin;
            result.push_back(temp); // bu
            if(Array[i]<= Array[begin]){
                if(sum + Array[i]-Array[begin]>n){
                   end = i;
                   begin++;
                   temp = end - begin;
                   result.push_back(temp);
                }
                // else
                end = i;
             }else {
                sum = sum + Array[i];
                while(sum - Array[begin]>n){
                    sum = sum - Array[begin];
                    begin++;
                }
                end = i;
                temp = end - begin;
                result.push_back(temp);
            }

        }
    }
    temp = findMin(result);
    return temp;

}