119 Pascal's Triangle II
119. Pascal's Triangle II
题目： https://leetcode.com/problems/pascals-triangle-ii/
难度 : Easy
思路：
太简单了，注意一点算数就好
class Solution(object):
def getRow(self, rowIndex):
"""
:type rowIndex: int
:rtype: List[int]
"""
if rowIndex == 0:
return [1]
res = [1]
for i in range(1, rowIndex+1):
tmp = [1]
for j in range(1, i):
tmp.append(res[j-1]+res[j])
tmp.append(1)
res = tmp
return res
