Write a recursive method called subsets to find every possible sub-list of a given list. A sub-list of a list L contains 0 or more of L’s elements. Your method should accept a list of strings as its parameter and print every sub-list that could be created from elements of that list, one per line. For example, if the list stores [Janet, Robert, Morgan, Char], the output from your method would be:
[Janet, Robert, Morgan, Char][Janet, Robert, Morgan][Janet, Robert, Char][Janet, Robert][Janet, Morgan, Char][Janet, Morgan][Janet, Char][Janet][Robert, Morgan, Char][Robert, Morgan][Robert, Char][Robert][Morgan, Char][Morgan][Char][ ]
The order in which you show the sub-lists does not matter, and the order of the elements of each sub-list also does not matter. The key thing is that your method should produce the correct overall set of sub-lists as its output. Notice that the empty list is considered one of these sub-lists. You may assume that the list passed to your method is not null and that the list contains no duplicates. Do not use any loops.
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