Want to replace a string containing consecutive repeating words to one using regular expression

Question

Hi Experts,
I need a regular expression to replace all duplicate words in a string with one.
eg: 'Hello Hello World 4-4-5 etc etc' should be changed to 'Hello World 4-4-5 etc'.
I tried many of them but they had one or the other problem. like (\w+\S\W)\1+' replace with ' \1' and  ' (\w+\W)\1+' replaced with ' \1' , etc
Thanks in advance
Tarique

Answer 1

Hi,
Translating what frank said to JAVA would be something like this:
        StringBuffer result = new StringBuffer();
        String myString = "This is right right, that is wrong.";
        String[] words = myString.split(" ");
        String lastWord = "";
        for (String str : words){
            if (!str.contains(lastWord))
                result.append(str);
            else
                result.append(str.substring((lastWord.length() >= 0 ? lastWord.length() : 0 ) , str.length()));
            lastWord = str;
            result.append(" ");
        System.out.println(result);
If you didnt have points and commas in your message then would be easier. But the code is not 100% correct and you will need to make it work according to yours requirements.