It's easier to split to do that. When you want to handle uniqueness or duplication, think of using a hash.

my %hash;
while (<>) {
    for (split) {
        print "dup word '$_' occurs at line $.\n"
            if $hash{$_}++;
    }
}

[download]

You can make that $hash{+lc}++ if you want to ignore case.

After Compline,
Zaxo

In reply to Re: Finding duplicate words in a paragraph by Zaxo
in thread Finding duplicate words in a paragraph by perladdict

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