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Praktikum 3: Ordnung

This commit is contained in:
Johannes Theiner 2018-04-25 13:26:11 +02:00
parent 39e025ef15
commit 3b50650702
1 changed files with 6 additions and 4 deletions
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10
src/main/java/de/joethei/hs/java2/praktikum/praktikum3/Vorlesungsverzeichnis.java
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@ -73,7 +73,8 @@ public class Vorlesungsverzeichnis implements Comparator<Vorlesung>{
*/
Map<String, Set<String>> map = vorlesungen.stream().collect(Collectors.groupingBy(Vorlesung::getDozent, Collectors.mapping(Vorlesung::getTitle, Collectors.toSet())));
Map<String, Set<String>> map = vorlesungen.stream().collect(
Collectors.groupingBy(Vorlesung::getDozent, Collectors.mapping(Vorlesung::getTitle, Collectors.toSet())));
Set<String> set = new HashSet<>();
map.forEach((s, strings) -> {
if(strings.size() >= 2) set.add(s);
@ -104,7 +105,8 @@ public class Vorlesungsverzeichnis implements Comparator<Vorlesung>{
}
return map;
*/
Map<String, List<String>> map = vorlesungen.stream().collect(Collectors.groupingBy(Vorlesung::getStudiengruppe, Collectors.mapping(Vorlesung::getTitle, Collectors.toList())));
Map<String, List<String>> map = vorlesungen.stream().collect(
Collectors.groupingBy(Vorlesung::getStudiengruppe, Collectors.mapping(Vorlesung::getTitle, Collectors.toList())));
map.forEach((s, strings) -> Collections.sort(strings));
return map;
}
@ -137,8 +139,8 @@ public class Vorlesungsverzeichnis implements Comparator<Vorlesung>{
}
return map;
*/
Map<String, List<String>> map = vorlesungen.stream().collect(Collectors.groupingBy(Vorlesung::getTitle, Collectors.mapping(Vorlesung::getDozent, Collectors.toList())));
Map<String, List<String>> map = vorlesungen.stream().collect(
Collectors.groupingBy(Vorlesung::getTitle, Collectors.mapping(Vorlesung::getDozent, Collectors.toList())));
Iterator<Map.Entry<String, List<String>>> iterator = map.entrySet().iterator();
while (iterator.hasNext()) {
Map.Entry<String, List<String>> entry = iterator.next();