Hello,
Is there a way by making use of s/// , I can get rid of duplicate characters in a string ? 
InPut :
$str = "abcdefghiaabccdjklm";

OutPut :

$str="efghijklm";

[download]
So I did try something like this below , but it requires me to do the replacement repeatedly to get rid of all repeating characters
Not sure if this can be done in one go itself ? 

Original String :
my $str = "abcdeffghijkllmnoppqestqaserb";

1st iteration :
$str =~ s/(\w)(.*)\1/$2/g;
Output : bcdeffghijkllmnoppqestqserb 

2nd Iteration :
$str =~ s/(\w)(.*)\1/$2/g;
OutPut : cdeffghijkllmnoppqestqser

3rd Iteration :
$str =~ s/(\w)(.*)\1/$2/g;
OutPut : cdffghijkllmnoppqestqsr 

4th Iteration :  Gets rid of consecutive elements
$str =~ s/(\w)(.*)\1/$2/g;
OutPut: cdghijkmnoestsr

[download]

In reply to How to remove duplicate characters in a string in place by punitpawar

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