In a non-empty array of integers, the priority of a number is determined by the frequency of its occurrence. Elements are added as they come but the most frequent element is deleted first. If two elements have the same priority, then the element which came first will be deleted first. For example: nums = [1,2,3,1,3,1,3,2,3]. After the first deletion now the array will be num={1,2,1,1,2}. Implement a priority queue for the aforementioned scenario.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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In a non-empty array of integers, the priority of a number is determined by the
frequency of its occurrence. Elements are added as they come but the most frequent
element is deleted first. If two elements have the same priority, then the element
which came first will be deleted first. For example: nums = [1,2,3,1,3,1,3,2,3]. After
the first deletion now the array will be num={1,2,1,1,2}. Implement a priority queue
for the aforementioned scenario.

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