Suppose you are given an array of integers called data. Suppose we would like to be able to know the number of times that each number in the array appears in the array. So, for example, suppose that the number 7 is repeated 11 times in the array. Then we would like to be able to always access the fact that 7 has a frequency of 11 in our array. a) Which Java data structure would you use for such a task? Explain why it would be helpful? b) Implement a function called computeFrequencies that receives the array as input and returns the data structure that you suggest in part a, with the appropriate values from the array (i.e. with the numbers from the array and their frequencies).
Suppose you are given an array of integers called data. Suppose we would like to be able to know the number of times that each number in the array appears in the array. So, for example, suppose that the number 7 is repeated 11 times in the array. Then we would like to be able to always access the fact that 7 has a frequency of 11 in our array. a) Which Java data structure would you use for such a task? Explain why it would be helpful? b) Implement a function called computeFrequencies that receives the array as input and returns the data structure that you suggest in part a, with the appropriate values from the array (i.e. with the numbers from the array and their frequencies).
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
Section: Chapter Questions
Problem 1PE
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Suppose you are given an array of integers called data. Suppose we would like to be able to know the number of times that each number in the array appears in the array. So, for example, suppose that the number 7 is repeated 11 times in the array. Then we would like to be able to always access the fact that 7 has a frequency of 11 in our array.
a) Which Java data structure would you use for such a task? Explain why it would be helpful?
b) Implement a function called computeFrequencies that receives the array as input and returns the data structure that you suggest in part a, with the appropriate values from the array (i.e. with the numbers from the array and their frequencies).
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