119. Pascal's Triangle II

Given an integer rowIndex, return the rowIndexth (0-indexed) row of the Pascal's triangle.

In Pascal's triangle, each number is the sum of the two numbers directly above it as shown:

 

Example 1:

Input: rowIndex = 3
Output: [1,3,3,1]

Example 2:

Input: rowIndex = 0
Output: [1]

Example 3:

Input: rowIndex = 1
Output: [1,1]

 

Constraints:

• 0 <= rowIndex <= 33

---

class Solution:
    def getRow(self, rowIndex: int) -> List[int]:
        res=[1]
        for i in range(rowIndex):
            temp=[0]+res+[0]
            tlist=[]
            for j in range(len(res)+1):
                tlist.append(temp[j]+temp[j+1])
            res=tlist
        return res