NumPy 面试题与答案
问题 21. How to find the index of the maximum value in a NumPy array?
You can use 'np.argmax()'. For example, 'np.argmax(arr)' returns the index of the maximum value in 'arr'.
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问题 22. What is the purpose of 'np.where()' in NumPy?
'np.where()' returns the indices of elements that satisfy a given condition.
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问题 23. Explain the use of 'np.linalg.inv()' in NumPy.
'np.linalg.inv()' computes the (multiplicative) inverse of a matrix.
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问题 24. How to find the shape of a NumPy array?
You can use the attribute 'shape'. For example, 'arr.shape' returns the shape of 'arr'.
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问题 25. What is the purpose of 'np.eye()' in NumPy?
'np.eye()' creates an identity matrix with ones on the main diagonal and zeros elsewhere.
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