HashMap vs LinkedHashMap vs TreeMap in Java (Java Collections)
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******************** Java HashMap VS LinkedHashMap VS TreeMap
Java HashMap:
It doesn't maintain any order.
It offers O(1) for insertion and lookup.
It is implemented by an Array of LinkedLists.
Java LinkedHashMap:
It maintains insertion order.
It offers O(1) for insertion and lookup.
It is implemented by doubly-linked buckets.
Java TreeMap:
It maintains sorted order. (Default: Ascending order)
It offers O(log N) for insertion and lookup.
It is implemented by Red-Black Tree.
For more details check out: https://www.programmingline.com/2017/...
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