mirror of
https://codeberg.org/Freeyourgadget/Gadgetbridge
synced 2024-11-16 06:59:29 +01:00
43 lines
1.5 KiB
Java
43 lines
1.5 KiB
Java
|
/* Copyright (C) 2022 José Rebelo
|
||
|
|
|
||
|
|
This file is part of Gadgetbridge.
|
||
|
|
|
||
|
|
Gadgetbridge is free software: you can redistribute it and/or modify
|
||
|
|
it under the terms of the GNU Affero General Public License as published
|
||
|
|
by the Free Software Foundation, either version 3 of the License, or
|
||
|
|
(at your option) any later version.
|
||
|
|
|
||
|
|
Gadgetbridge is distributed in the hope that it will be useful,
|
||
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
GNU Affero General Public License for more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU Affero General Public License
|
||
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
||
|
|
package nodomain.freeyourgadget.gadgetbridge.util;
|
||
|
|
|
||
|
|
import java.util.HashMap;
|
||
|
|
import java.util.Map;
|
||
|
|
|
||
|
|
public final class MapUtils {
|
||
|
|
/**
|
||
|
|
* Reverses a map. If there are multiple values for the same key, the first one will take precedence.
|
||
|
|
*
|
||
|
|
* @param map the map to reverse
|
||
|
|
* @param <V> the type for the values
|
||
|
|
* @param <K> the type for the keys
|
||
|
|
* @return the reversed map
|
||
|
|
*/
|
||
|
|
public static <V, K> Map<V, K> reverse(final Map<K, V> map) {
|
||
|
|
final Map<V, K> reversed = new HashMap<>();
|
||
|
|
|
||
|
|
for (final Map.Entry<K, V> entry : map.entrySet()) {
|
||
|
|
if (!reversed.containsKey(entry.getValue())) {
|
||
|
|
reversed.put(entry.getValue(), entry.getKey());
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return reversed;
|
||
|
|
}
|
||
|
|
}
|