Finding repeated words on a string and counting the repetitions

Question

I need to find repeated words on a string, and then count how many times they were repeated. So basically, if the input string is this:

String s = \"House, House         


        

Answer 1

I hope this will help you

public void countInPara(String str) {

    Map strMap = new HashMap();
    List paraWords = Arrays.asList(str.split(" "));
    Set strSet = new LinkedHashSet<>(paraWords);
    int count;

    for(String word : strSet) {
        count = Collections.frequency(paraWords, word);
        strMap.put(count, strMap.get(count)==null ? word : strMap.get(count).concat(","+word));
    }

    for(Map.Entry entry : strMap.entrySet())
        System.out.println(entry.getKey() +" :: "+ entry.getValue());
}