Question

Given following ndarray A1: array([[1,2,3], [4,5,6], [7,8,9]]) What will be the output produced by the following array slices? (i) A1[: : 3,: : 2] (ii) A1[: : -1,: : -1] *

Answer 1

I. [ [1 3] ]

II. [ [9 8 7]

     [6 5 4]

     [3 2 1] ]

Answer 2

Answer: The answer is based on python programming language.

Slicing: The method of slicing a sequence can be specified with the help of a slice object. You have the ability to choose where the slicing begins and where it comes to a conclusion. In addition, you have the option of specifying the step, which enables you to do things like slice only every other item.

Python: Python is a programming language use to code software's, app and handle AI and ML features.

Explanation:

• Given Array ([[1,2,3],[4,5,6],[7,8,9]])
• The output by A1[::3,::2] is  [7,8,9]
• The output by A1[::-1,::-1] is [7,8,9]
• We can get the same thing by A1[2:3] and A1[-1]
• We used slicing technique in python to represent an array member from the n-dimensional array
• It reduces effort and time

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