Java Utililty Methods HashSet Create

List of utility methods to do HashSet Create

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Description

The list of methods to do HashSet Create are organized into topic(s).

Method

intselect(HashSet S)
select 
Random R = new Random();
int r = R.nextInt(S.size());
int i = 0;
for (int e : S) {
    i++;
    if (i == r) {
        return e;
return 0;
HashSetstringArrayToHashset(String[] strings)
A function for converting string arrays to HashSets of strings, provided as a convenience for preparing string arrays for TNRS. 
HashSet<String> stringSet = new HashSet<String>();
for (int i = 0; i < strings.length; i++) {
    stringSet.add(strings[i]);
return stringSet;
HashSettoHashSet(Object[] array)
to Hash Set 
HashSet result = new HashSet();
for (int i = array.length - 1; i >= 0; i--)
    result.add(array[i]);
return result;
SettoHashSet(Set inp)
to Hash Set 
Set<T> rslt = new HashSet<>();
rslt.addAll(inp);
return rslt;