public class Solution
extends Object
118 - Pascal's Triangle\.
Easy
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 as shown:
**Example 1:**
**Input:** numRows = 5
**Output:** [[1],[1,1],[1,2,1],[1,3,3,1],[1,4,6,4,1]]
**Example 2:**
**Input:** numRows = 1
**Output:** [[1]]
**Constraints:**
* `1 <= numRows <= 30`