Easy
Quiz
#119 Pascal's Triangle II
APPROACH
Given a 0-indexed row number rowIndex, return that row of Pascal's triangle as a list.
In Pascal's triangle, each element is the sum of the two elements directly above it.
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]
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What is the optimal approach for this problem?