perl - how to replace a div[ ] element with another div[ ] element?

Question

for ($i=0; $i<10; $i++)
{
  my $v1 = $sel->get_text("//body[@id='ext-gen3']/div[10]/div[2]/div/div/div/div/div/div/div/div/div/div[2]/div/**div**/table/tbody/tr/td/div/div");

my $v2 = $sel->get_text("//body[@id='ext-gen3']/div[10]/div[2]/div/div/div/div/div/div/div/div/div/div[2]/div/**div**/table/tbody/tr/td[2]/div/div")

print ($v1 . $v2);
}

For every iteration, it has to find the 14th element starting from div[10] & replace it with the increased div[ ] element (Ex: if 14th element is div, replace it by div[2]. In the next iterartion find 14th element i.e., div[2] & replace it by div[3] & so on ).

By using PATTERN matching, it can't. Is there any method by using regex for finding that particular element & replacing it ? how can i do it ?

 my $a = "//body[@id='ext-gen3']/div[10]/div[2]/div/div/div/div/div/div/div/div/div/div[2]/div/**div**/table/tbody/tr/td/div/div"; 
    my @arr = split ('/' , $a); 
    print "@arr 
"; 
    my $size1 = @arr; 
    print "$size1
"; 
    print $arr[16]; 
    foreach my $a2 (@arr) 
    { 
    print "$a2 
"; 
    }
my $b = "//body[@id='ext-gen3']/div[10]/div[2]/div/div/div/div/div/div/div/div/div/div[2]/div/**div**/table/tbody/tr/td[2]/div/div";

Two variables as mentioned in the above question as v1 & v2 (edited as $a and $b), the modification has to apply for both of them. I think i'm almost near to what you've told. Can yoy please help me further

Answer 1

use 5.010;
my $xpath = q(//body[@id='ext-gen3']/div[10]/div[2]/div/div/div/div/div/div/div/div/div/div[2]/div/div/table/tbody/tr/td/div/div);

for my $i (0..10) {
    my @nodes = split qr'/', $xpath;
    $nodes[16] .= "[$i]" unless 0 == $i;
    say join '/', @nodes;
}

Results:

//body[@id='ext-gen3']/div[10]/div[2]/div/div/div/div/div/div/div/div/div/div[2]/div/div/table/tbody/tr/td/div/div
//body[@id='ext-gen3']/div[10]/div[2]/div/div/div/div/div/div/div/div/div/div[2]/div/div[1]/table/tbody/tr/td/div/div
//body[@id='ext-gen3']/div[10]/div[2]/div/div/div/div/div/div/div/div/div/div[2]/div/div[2]/table/tbody/tr/td/div/div
//body[@id='ext-gen3']/div[10]/div[2]/div/div/div/div/div/div/div/div/div/div[2]/div/div[3]/table/tbody/tr/td/div/div
//body[@id='ext-gen3']/div[10]/div[2]/div/div/div/div/div/div/div/div/div/div[2]/div/div[4]/table/tbody/tr/td/div/div
//body[@id='ext-gen3']/div[10]/div[2]/div/div/div/div/div/div/div/div/div/div[2]/div/div[5]/table/tbody/tr/td/div/div
//body[@id='ext-gen3']/div[10]/div[2]/div/div/div/div/div/div/div/div/div/div[2]/div/div[6]/table/tbody/tr/td/div/div
//body[@id='ext-gen3']/div[10]/div[2]/div/div/div/div/div/div/div/div/div/div[2]/div/div[7]/table/tbody/tr/td/div/div
//body[@id='ext-gen3']/div[10]/div[2]/div/div/div/div/div/div/div/div/div/div[2]/div/div[8]/table/tbody/tr/td/div/div
//body[@id='ext-gen3']/div[10]/div[2]/div/div/div/div/div/div/div/div/div/div[2]/div/div[9]/table/tbody/tr/td/div/div
//body[@id='ext-gen3']/div[10]/div[2]/div/div/div/div/div/div/div/div/div/div[2]/div/div[10]/table/tbody/tr/td/div/div