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What is Hash code

Hash code: It is a value returned by a hash function. A hash code can be employed as an index into a random-access data structure, offering a proficient mapping between an object and its position. Employed by classes like HashMap.

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    Hash function: A function employed to generate a hash code from the random contents of an object. The classes can override the hash Value method, inherited from the Object class, to state their own hash function.