java - all subsequeces in a string

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import java.util.ArrayList; import java.util.List; import java.util.stream.Collectors; public class _String { /** * Print Print all subsequences of a string * * http://www.geeksforgeeks.org/print-subsequences-string/ * */ public static List<String> all_subsequece_in_a_string(String str) { return powerSet(str.toCharArray()).stream() .filter(c -> c.length != 0) .map(String::new) .distinct() .collect(Collectors.toList()); } }

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