implement parallel matrix multiplication by row-partitioning using the Process object of multiprocessing module. The input matrices A and B are small 3×3 matrices and each of 3 processes receives its row and matrix B from the master process, multiplies its row with matrix B to form the row of product matrix C. A worker then sends its associated row of matrixC to the master.We need to consider the following for this algorithm: when a process is spawned using the Process module, it has all of the data of the parent process but the modifications it makes are not reflected in the parent process. In order to have the product matrix C shared between the processes, we need to use the Manager object of the multiprocessing module and define C as an array to be shared from this object. Each worker process performs multiplication and stores the result in its row entry of matrix C.

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Hash Table

A hash table also called a hash map, is a data structure that maps key-value pairs. The hash table can be used in complex systems to provide fast access and compact storage. A hash table is a structure that stores data in an abstract data type kind of associative array. It keeps data in an array format, with a distinct index value for every data value. If the index of the required data is known, then the data can be accessed very easily.