Problem Description: Given two sparse matrices A and B, return the result of AB. You may assume that A's column number is equal to B's row number. ...
ms solution: use one HashTable: ms The idea is derived froma CMU lecture. A sparse matrix can be represented as a sequence of rows, each of which is a sequence of column number, value pairs of the no ...
2015-12-31 07:57 0 2301 推荐指数:
Problem Description: Given two sparse matrices A and B, return the result of AB. You may assume that A's column number is equal to B's row number. ...
Given two sparse matrices A and B, return the result of AB. You may assume that A's column number is equal to B's row number. Example: 这道题 ...
矩阵,返回矩阵相乘的结果。 在数值分析中,稀疏矩阵(Sparse matrix),是其元素大部分为零的 ...
: http://leetcode.com/problems/sparse-matrix-multipli ...
coo_matrix.tocsr(copy = False ) 将此矩阵转换为压缩稀疏行格式,重复的条目将汇总在一起。 举例: from numpy import array from scipy.sparse import coo_matrix row = array ...
Given two strings representing two complex numbers. You need to return a string representing their multiplication. Note i2 = -1 according ...
Sparse Matrix Types Block Sparse Row matrix class scipy.sparse.bsr_matrix(arg1, shape=None, dtype=None, copy=False, blocksize=None ...
这是一个相当simple & naive的方法,几行代码完成的CSR稀疏矩阵格式的优化,剔除0元素。由于目前AMD的OpenCL SDK依旧没有赶上NVIDIA CUDA SDK的进度——新的 ...