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public static void deleteElementByPattern(Set<String> mySet,String pattern){
Iterator<String> i = mySet.iterator();
while (i.hasNext()){
if (i.next().matches(pattern))
i.remove();
}
}
public static void deleteElementByPattern(Set<String> mySet,String pattern){
Iterator<String> i = mySet.iterator();
while (i.hasNext()){
if (((String)i.next()).matches(pattern))
i.remove();
}
}