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- public void skirtingiAutoriai() {
- Map<String, Integer> skirtingiAutoriai = new TreeMap<String, Integer>();
- for (Knyga w1 : knygos) {
- Integer sum = skirtingiAutoriai.get(w1.getAutorius());
- if (sum == null) {
- sum = 0;
- }
- sum++;
- skirtingiAutoriai.put(w1.getAutorius(), sum);
- }
- System.out.println("Skirtingi autoriai: " + skirtingiAutoriai.size());
- for (Map.Entry<String, Integer> e : skirtingiAutoriai.entrySet()) {
- System.out.println("Autorius: " + e.getKey() + ". Knygų skaičius: " + e.getValue());
- }
- System.out.println("---------------------------------");
- }
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