Java Utililty Methods HashMap Reverse

List of utility methods to do HashMap Reverse

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HashMap Reverse

Description

The list of methods to do HashMap Reverse are organized into topic(s).

Method

HashMap reverseHashMap(HashMap map)
reverse Hash Map

HashMap<B, A> reverseMap = new HashMap<B, A>();
for (A a : map.keySet()) {
 B b = map.get(a);
 reverseMap.put(b, a);
return reverseMap;

Map reverseHashMap(Map map)
reverse Hash Map

Map<U, T> ret = new HashMap<>(map.size());
for (Entry<? extends T, ? extends U> entr : map.entrySet()) {
 ret.put(entr.getValue(), entr.getKey());
return ret;