Pascal's Triangle
Given an integer numRows, return the first numRows of Pascal's triangle.
In Pascal's triangle, each number is the sum of the two numbers directly above it.
Example 1
Input
numRows = 5Output
[[1],[1,1],[1,2,1],[1,3,3,1],[1,4,6,4,1]]The first 5 rows of Pascal's triangle are returned.
Example 2
Input
numRows = 1Output
[[1]]The first 1 row of Pascal's triangle is returned.
Constraints
- 1 <= numRows <= 30