private String[] filtrate(String[] input) {
Set set = new HashSet();
set.addAll(Arrays.asList(input));
String[] arr = (String[]) set.toArray(new String[0]);
String[] result = new String[arr.length];
for (int i = 0; i < arr.length; i++) {
result[i] = arr[i];
}
return result;
}