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Which of the following is true about fancy indexing with integer arrays in NumPy?

easy📝 Conceptual Q2 of 15
NumPy - Indexing and Slicing
Which of the following is true about fancy indexing with integer arrays in NumPy?
AIt returns a view of the original array
BIt returns a copy of the selected elements
CIt modifies the original array in place
DIt only works with boolean arrays
Step-by-Step Solution
Solution:

  1. Step 1: Recall behavior of fancy indexing

    Fancy indexing returns a new array (a copy), not a view, so changes to it don't affect the original.

  2. Step 2: Eliminate incorrect options

    It does not modify the original array and does not require boolean arrays.

  3. Final Answer:

    It returns a copy of the selected elements -> Option B

  4. Quick Check:

    Fancy indexing returns copy = True [OK]
Quick Trick: Fancy indexing always returns a copy, not a view [OK]
Common Mistakes:
  • Thinking it returns a view
  • Assuming it modifies original array
  • Confusing with boolean indexing

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