海康威视AI工程师笔试

组合公式指的是哪些。

同78

输入小于0情况一样的，直接加abs处理一下

你好，想请问下有几道编程呀

动态规划 class Solution(object): def uniquePaths(self, m, n): """ :type m: int :type n: int :rtype: int """ rows, cols = m, n dp = [ [0] * cols for _ in range(rows)] for i in range(rows): for j in range(cols): if i == 0 or j == 0: dp[i][j] = 1 else: dp[i][j] = dp[i-1][j] + dp[i][j-1] return dp[-1][-1]