You are 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:
1 <= numRows <= 33