Question

Hello guys maybe you maybe can help . here is my problem

For example : “I am running all over the time every time with my dog and my sister”

I want to have a list containing all the unique words from the above sentences :

List data = {I,am,running,all,over,the,time,every,with,my,dog,and,sister}

I already tried this code below but it runs slow with big sentences

List textList = new ArrayList();
    StringTokenizer stringTokenizer = new StringTokenizer(text);

    while (stringTokenizer.hasMoreElements()) {
        String tokenData = (String) stringTokenizer.nextElement();
        if ((textList.size() > 0)) {
            Boolean exist = false;
            for (int i = 0; i < textList.size(); i++) {
                if (tokenData.toLowerCase().equals(
                        textList.get(i).toString().toLowerCase()))
                    exist = true;
            }
            if (exist == false)
                textList.add(tokenData);
        } else {
            textList.add(tokenData);
        }

    }

Is there anyway other than this faster way but same result . I appreciate your reply thx

Answer 1

try this code

String data = "I am running all over the time every time with my dog and my sister";
String[] arr = data.split(" ");

Set<String> st = new HashSet<String>();

st.addAll(Arrays.asList(arr));

Set only allows unique values and will ignore duplicates.