Priority Queue Array Implementation | Queue Datat Structure | L 64 | Data Structures & Application
Array Implementation of Priority Queue
Array implementation of priority queue maintains separate queue for each priority number
Each queue will be implemented using circular arrays or circular queues
Every individual queue will have its own FRONT and REAR pointers
Implemented using two-dimensional array where each queue will be allocated the same amount of space
Insertion - Array Implementation of Priority Queue
To insert a new element with priority K in the priority queue, add the element at the rear end of row K, where K is the row number as well as the priority number of that element
Example: Insert an element R with priority number 3
Deletion - Array Implementation of Priority Queue
To delete an element, first find nonempty queue and then process its front element
In our priority queue, the first non-empty queue is the one with priority number1 and the front element is A, so A will be deleted and processed first
In technical terms, find the element with the smallest K, such that FRONT[K] != NULL
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