List<String> list = new ArrayList();
list.add("Washington");
list.add("Nevada");
list.add("California");
PermutationIterator permIterator = new PermutationIterator((Collection) list);
permIterator.forEachRemaining(System.out::print); // prints [Washington, Nevada, California][Washington, California, Nevada][California, Washington, Nevada][California, Nevada, Washington][Nevada, California, Washington][Nevada, Washington, California]
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