how to solve this problem, ask for advice
how to solve this problem, ask for advice
In [1]: import numpy as np
In [2]: from collections import Counter
In [3]: a = np.array([[1,2],[3,4]])
In [4]: Counter(a.flatten())
Out[4]: Counter({1: 1, 2: 1, 3: 1, 4: 1})
In [5]: b = np.array([[1,1],[3,4]])
In [6]: Counter(b.flatten())
Out[6]: Counter({1:2, 3: 1, 4: 1})
bincount
>>> a=np.random.randint(1,10,15).reshape(3,5)/10
>>> a
array([[ 0.6, 0.8, 0.3, 0.5, 0.7],
[ 0.7, 0.6, 0.7, 0.4, 0.4],
[ 0.1, 0.8, 0.4, 0.5, 0.5]])
>>> , = np.unique(a, return_counts=True)
>>> np.vstack((, ))
array([[ 0.1, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8],
[ 1. , 1. , 3. , 3. , 2. , 3. , 2. ]])
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