HashMap vs. Hashtable similarities Both the Hashtable and HashMap implement the Map interface and both share the same set of methods used to add, remove and manipulate elements of a key-value, ...

Health problems are not only related to the availability of medical facilities and medical personnel but also include the security of health data. In this regard, the development of blockchain ...

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This repo provides a method that takes a JSON object, iterates all objects and adds hashes to them. This is the algorithm: Iterate to the children of each object Objects are hashed using SHA-256 ...

The hash function as a blockchain element is then implemented using the Java language to protect medical record data when it is stored and shared among hospitals using medical record applications.