Array slicing creates a copy of an array

Array slicing can create a copy of an array. The syntax is: array[start:end], where start is the starting index and end is the ending index (not included). It does not modify the original array, but creates a reference to the original element. Any modifications to the sliced ​​array or the original array will be reflected on the other side.

Array slicing creates a copy of an array

Overview

Array slicing is a Convenient way to create a copy of an array. It allows you to extract some or all elements from an existing array without modifying the original array.

Syntax

Array slicing uses the following syntax:

array[start:end]

Where:

• start Is the starting index (inclusive)
• end Is the ending index (not included)

Practical case

The following Python code demonstrates how to use array slicing to create an array copy:

# 创建一个原始数组
original_array = [1, 2, 3, 4, 5]

# 创建原始数组的副本
copy_array = original_array[1:4]

# 打印原始数组和副本
print("原始数组:", original_array)
print("副本数组:", copy_array)

Running results

原始数组: [1, 2, 3, 4, 5]
副本数组: [2, 3, 4]

As the results show, copy_array Elements from index 1 to 4 (exclusive) in original_array are included, while original_array remains unchanged.

Note

• Array slicing does not create a complete copy of the array, but instead creates a reference pointing to an element in the original array.
• Any modifications made to the sliced ​​array will be reflected in the original array and vice versa.

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