How to Iterate Over an Array in Reverse Order in Perl - Step by Step Examples

How to Iterate Over an Array in Reverse Order in Perl ?

Answer

To iterate over an array in Perl in reverse order, you can use the reverse function or a for loop starting from the last index to the first index.

✐ Examples

1 Iterate Over Integer Array in Reverse with reverse Function

In this example,

We create an integer array named @numbers with some values.
We use the reverse function to reverse the order of elements in the array.
We then use a for loop to iterate over each element of the reversed array.

Perl Program

@numbers = (1, 2, 3, 4, 5);
@reversed_numbers = reverse @numbers;
foreach $number (@reversed_numbers) {
    print "$number\n";
}

Output

2 Iterate Over String Array in Reverse with for Loop

In this example,

We create a string array named @fruits with some values.
We use a for loop starting from the last index to iterate over each element of the array in reverse order.

Perl Program

@fruits = ("apple", "banana", "cherry");
for ($i = $#fruits; $i >= 0; $i--) {
    print "$fruits[$i]\n";
}

Output

cherry
banana
apple

Summary

In this tutorial, we learned How to Iterate Over an Array in Reverse Order in Perl language with well detailed examples.

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