How to Remove Element from Array based on a Condition in Perl - Step by Step Examples

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How to Remove Element from Array based on a Condition in Perl ?

Answer

In Perl, you can use functions like `grep` or `map` to filter and modify arrays based on a condition.

✐ Examples

1 Remove Even Numbers

In this example,

We create an array `@numbers` with elements including those to be removed based on the condition.
We use the `grep` function with a condition to create a new array excluding even numbers.
We print the array after filtering.

Perl Program

@numbers = (1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
@filtered_numbers = grep { $_ % 2 != 0 } @numbers;
print 'Array after filtering:\n';
print join(' ', @filtered_numbers);

Output

Array after filtering:
1 3 5 7 9

2 Remove Strings Containing 'a'

In this example,

We create an array `@words` with elements including those to be removed based on the condition.
We use the `grep` function with a condition to create a new array excluding strings containing 'a'.
We print the array after filtering.

Perl Program

@words = ('apple', 'banana', 'grape', 'orange', 'melon');
@filtered_words = grep { index($_, 'a') == -1 } @words;
print 'Array after filtering:\n';
print join(' ', @filtered_words);

Output

Array after filtering:
grape melon

Summary

In this tutorial, we learned How to Remove Element from Array based on a Condition in Perl language with well detailed examples.

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