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Kuidas sõltub LinkedHashMap-i elementide järjekorra käitumine nende viimasele ligipääsule?

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In the LinkedHashMap class in Java, the order of elements can depend on their insertion order or access order, depending on the accessOrder parameter in the constructor.

If accessOrder is set to false (default), the order of elements corresponds to their insertion order — elements are listed in the order they were added.

If accessOrder is set to true, the order of elements changes upon access (for example, when calling get(), put(), or putAll() for an existing key). In this case, the recently accessed element is moved to the end of the list, reflecting its recent use. This behavior is useful, for example, for implementing caches with an LRU (Least Recently Used) policy.

Example of creating a LinkedHashMap with access order:

LinkedHashMap<Integer, String> map = new LinkedHashMap<>(16, 0.75f, true);
map.put(1, "one");
map.put(2, "two");
map.get(1); // now the element with key 1 is considered recently used
// During iteration, the element with key 1 will come after the element with key 2
Kuidas sõltub LinkedHashMap-i elementide järjekorra… - sobes.tech