Praktikum 3: Ordnung
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@ -73,7 +73,8 @@ public class Vorlesungsverzeichnis implements Comparator<Vorlesung>{
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Map<String, Set<String>> map = vorlesungen.stream().collect(Collectors.groupingBy(Vorlesung::getDozent, Collectors.mapping(Vorlesung::getTitle, Collectors.toSet())));
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Map<String, Set<String>> map = vorlesungen.stream().collect(
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Collectors.groupingBy(Vorlesung::getDozent, Collectors.mapping(Vorlesung::getTitle, Collectors.toSet())));
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Set<String> set = new HashSet<>();
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map.forEach((s, strings) -> {
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if(strings.size() >= 2) set.add(s);
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@ -104,7 +105,8 @@ public class Vorlesungsverzeichnis implements Comparator<Vorlesung>{
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}
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return map;
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*/
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Map<String, List<String>> map = vorlesungen.stream().collect(Collectors.groupingBy(Vorlesung::getStudiengruppe, Collectors.mapping(Vorlesung::getTitle, Collectors.toList())));
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Map<String, List<String>> map = vorlesungen.stream().collect(
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Collectors.groupingBy(Vorlesung::getStudiengruppe, Collectors.mapping(Vorlesung::getTitle, Collectors.toList())));
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map.forEach((s, strings) -> Collections.sort(strings));
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return map;
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}
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@ -137,8 +139,8 @@ public class Vorlesungsverzeichnis implements Comparator<Vorlesung>{
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}
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return map;
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*/
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Map<String, List<String>> map = vorlesungen.stream().collect(Collectors.groupingBy(Vorlesung::getTitle, Collectors.mapping(Vorlesung::getDozent, Collectors.toList())));
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Map<String, List<String>> map = vorlesungen.stream().collect(
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Collectors.groupingBy(Vorlesung::getTitle, Collectors.mapping(Vorlesung::getDozent, Collectors.toList())));
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Iterator<Map.Entry<String, List<String>>> iterator = map.entrySet().iterator();
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while (iterator.hasNext()) {
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Map.Entry<String, List<String>> entry = iterator.next();
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