Given an index k, return the kth row of the Pascal's triangle.
For example, given k = 3,
Return [1,3,3,1].
Note:
Could you optimize your algorithm to use only O(k...
1. 题目
1.1 英文题目
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 ...