Re: Joining an array

[trizen]

in reply to Joining an array

Here is a splice + join version...

my @t = qw(name John number 7 status unknown);

my $i = -1;
foreach my $x (1 .. $#t) {
    splice(@t, $i += 2, 0, $x % 2 ? '=' : '&');
}

print join '', @t;

[trizen]

A faster way:

my @array = qw(name John number 7 status unknown);

my $i   = -2;
my $x   = $#array - 1;
my $str = '';

while (1) {
    if ($i + 3 < $x) {
        $str .= $array[$i += 2] . '=' . $array[$i + 1] . '&';
    }
    else {
        $str .=
            $i + 3 == $x ? $array[-3] . '=' . $array[-2] . '&' . $arra
+y[-1]
          : $i + 2 == $x ? $array[-2] . '=' . $array[-1]
          :                $array[-1];
        last;
    }
}

print "$str\n";