import numpy as npa = np.array([[1,1,0], [0,1,0],[0,0,1]])print(a)b ... 1、matlab计算矩阵中每一列非零元素个数假设矩阵A: A = 0 1 0 5 5 6 0 1 9 9 0 0 0 0 4 2 ...
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