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Oct 15th, 2018
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  1. public ListNode removePertama() {
  2. if(!isEmpty()) {
  3. ListNode bantu = pertama;
  4. pertama = pertama.getKanan();
  5. return bantu;
  6. }
  7. else {
  8. return null;
  9. }
  10. }
  11.  
  12. public ListNode removeTerakhir() {
  13. if(!isEmpty()) {
  14. ListNode bantu = pertama;
  15. while (bantu.getKanan()!=terakhir) {
  16. bantu = bantu.getKanan();
  17. }
  18. terakhir = bantu;
  19. bantu = bantu.getKanan();
  20. terakhir.setKanan(null);
  21. return bantu;
  22. }
  23. else {
  24. return null;
  25. }
  26. }
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