原题
1 class Solution:
2 def getRow(self, rowIndex: int) -> List[int]:
3 ans = [1]
4 for i in range(rowIndex):
5 # tmp = [1]
6 # for j in range(1,len(ans)):
7 # tmp.append(ans[j-1] + ans[j])
8 # tmp.append(1)
9 # ans = tmp
10 j = len(ans)-1
11 while j > 0:
12 ans[j] += ans[j - 1]
13 j -= 1
14 ans.append(1)
15 return ans
