119. Pascal's Triangle II

 1 class Solution {
 2 public:
 3     vector<int> getRow(int rowIndex) {
 4         
 5         vector<int> triangle(rowIndex + 1);
 6         triangle[0] = 1;
 7 
 8         for (int i = 0; i < rowIndex; ++i)
 9         {
10             for (int j = i + 1; j > 0; --j)
11             {
12                 triangle[j] += triangle[j - 1];
13             }
14         }
15 
16         return triangle;
17     }
18 };