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- Object nextElement = currentElement.next();
- for (int i= 20; i<= 30; i++) {
- //do something
- nextElement = nextElement.next();
- }
- Object previousElement = currentElement.previous();
- for (int i= 20; i>= 10; i--) {
- //do something
- previousElement = previousElement.previous();
- }
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