Hi monks. I need your help :) I want to compare two variable. There are $a = "YAAY" $b = "$YAAA".I want to print only "Y". Only last initial "Y" is different from A to B. Below script, I can compare but I think my script is not that good on performance because of loop. Do you have nice idea? or function?. I have two cases type. case 1 couldn't compare becuase first initial is "Y". but case 2 could compare however I had to use for...I hate loop.. It make performance bad... Please help me Monks :) 
use strict;

my ($x,$y,@x,@y,$i);

# case 1 
$x = "YAAY";
$y = "YAAA";
$x =~ s/[$y]+//g;
print "$x";

# case 2
$x = "YAAY";
$y = "YAAA";
@x = split(//,$x);
@y = split(//,$y);
for($i=0;$i<=$#x;$i++){if($x[$i] ne $y[$i]){print "$x[$i]\n"}}

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In reply to variable compare by dideod.yang

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