Sample Code of Multi-digit subscript in perl Array

The normal subscript operations in the perl array must be familiar to everyone. I will not describe them here.
This article describes the multi-digit values under the perl array, which greatly facilitates Array Operations.
Note: These numbers are from 0 to $ # array.

Child Array

Copy codeThe Code is as follows: @ array = (1, 2, 3, 4, 5 );
@ Subarray = @ array [0, 1]; # @ subarray = (1, 2)
@ Subarray2 = @ array [1 .. 3]; # @ subarray2 = (2, 3, 4)
@ Array [] = ("string", 46); # @ array = ("string",) now
@ Array [0 .. 3] = (11, 22, 33, 44); # @ array = (11,22, 33,44, 5) now
@ Array [, 3] = @ array [, 4]; # @ array = (, 5, 5) now
@ Array [0 .. 2] = @ array [3, 4]; # @ array = (5, 5, "", 5, 5) now

Elements can be exchanged in the form of subarrays:

Copy codeThe Code is as follows: @ array [1, 2] = @ array [2, 1];