An array in Perl is a variable used to store an ordered list of scalar values. An array variable is preceded by an “at” (@) sign. The size of an array can be determined using the scalar context on the array which returns the number of elements in the array
Size of the Array is 3
Above code returns the physical size of the array, not the number of valid elements. In order to obtain the maximum index of an array, ‘$#’ is used as shown in the example below:
Array is 1 2 3 20 Maximum index is 15
Here is how the above code works:-
Step1: Initializing an array with some values
Step2: Assigning a value at any random index leaving the other indices blank
Step3: Printing the array to show the blank spaces left in the array
Step4: To get the maximum index ‘$#’ is used
Step5: Further, print the maximum index
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