标签：media sum upload pac use dia input only numbers
Given a non-negative index k where k ≤ 33, return the kth index row of the Pascal‘s triangle.
Note that the row index starts from 0.
In Pascal‘s triangle, each number is the sum of the two numbers directly above it.
Example:
Input: 3 Output: [1,3,3,1]
Follow up:
Could you optimize your algorithm to use only O(k) extra space?
自上到下行行计算
class Solution(object): def getRow(self, rowIndex): """ :type rowIndex: int :rtype: List[int] """ nums = [] for i in range(rowIndex+1): nums = [nums[j - 1] + nums[j] for j in range(1, i)] nums.insert(0, 1) if i != 0: nums.append(1) return nums
标签：media sum upload pac use dia input only numbers
原文地址：https://www.cnblogs.com/jeroen/p/9159399.html
