Pascal's Triangle II Leetcode java
题目： 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 ...
原文：[LeetCode] Pascal's Triangle II
Given an indexk, return thekthrow of the Pascal s triangle. For example, givenk ,Return , , , . Note:Could you optimize your algorithm to use onlyO k extra space 对于产生一个新的行用从后往前的方法来更新，这样就只需一个O k 的空间。 ...
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