convert hashset to array
// First of all, you shouldn't use raw types.
// Use :
Set<Integer> set = new HashSet<>();
set.add(4);
set.add(1);
// Then convert to array :
Integer[] arr = x.toArray(new Integer[set.size()]);
// Using x.toArray() would give you an Object[].Copyright © 2021 Codeinu
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