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public java v1 · immutablepublic String remove(int num) { if (list.size() > 0) { num += -1; return list.get(num).toString(); list.remove(num); }else { return null; } }public String remove(int num) { if (list.size() > 0) { num += -1; return list.get(num).toString(); list.remove(num); }else { return null; } }