Linear Search in Perl

Linear Search

in Perl

Welcome to the Linear Search in Perl page! Here, you'll find the source code for this program as well as a description of how the program works.

Current Solution

#!/usr/bin/env perl
use v5.42;

use feature qw/keyword_any/;
no warnings 'experimental::keyword_any';

sub usage {
    say 'Usage: please provide a list of integers ("1, 4, 5, 11, 12") and the integer to find ("11")';
    exit;
}

sub parse_list ($s) {
    return undef unless defined $s;

    my @vals = split /\s*,\s*/, $s;

    return undef unless @vals;
    return undef if any { $_ !~ /\A\d+\z/ } @vals;

    @vals = map 0 + $_, @vals;

    return \@vals;
}

my ( $list_s, $num_s ) = @ARGV;

defined $num_s or usage();

my $list = parse_list($list_s) or usage();

usage() unless $num_s =~ /\A\d+\z/;
my $num = 0 + $num_s;

my $found = any { $_ == $num } @$list;
say $found ? "true" : "false";

Linear Search in Perl was written by:

• Tim W
• Ștefan-Iulian Alecu

If you see anything you'd like to change or update, please consider contributing.

How to Implement the Solution

No 'How to Implement the Solution' section available. Please consider contributing.

How to Run the Solution

No 'How to Run the Solution' section available. Please consider contributing.