
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
![Create a function that returns the frequency distribution of an array. This
function should return an object, where the keys are the unique elements and
the values are the frequency in which those elements occur.
Examples
get Frequencies (["A", "B", "A", "A", "A"]) → { A: 4, B: 1 }
get Frequencies ([1, 2, 3, 3, 2]) → { "1": 1, "2": 2, "3": 2 }
get Frequencies ([true, false, true, false, false])
{ true: 2, fal
→](https://content.bartleby.com/qna-images/question/2427f27b-7893-4d03-8510-ccdc07e13c4a/6e807765-ba08-46d2-bf2a-dcda5f63cd36/t9jmash_thumbnail.png)
Transcribed Image Text:Create a function that returns the frequency distribution of an array. This
function should return an object, where the keys are the unique elements and
the values are the frequency in which those elements occur.
Examples
get Frequencies (["A", "B", "A", "A", "A"]) → { A: 4, B: 1 }
get Frequencies ([1, 2, 3, 3, 2]) → { "1": 1, "2": 2, "3": 2 }
get Frequencies ([true, false, true, false, false])
{ true: 2, fal
→
Expert Solution

This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution
Trending nowThis is a popular solution!
Step by stepSolved in 2 steps with 1 images

Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- The Lo Shu Magic Square is a grid with 3 rows and 3 columns shown below. The Lo Shu Magic Square has the following properties: The grid contains the numbers 1 – 9 exactly The sum of each row, each column and each diagonal all add up to the same number. This is shown below: Write a program that simulates a magic square using 3 one dimensional parallel arrays of integer type. Do not use two-dimensional array. Each one the arrays corresponds to a row of the magic square. The program asks the user to enter the values of the magic square row by row and informs the user if the grid is a magic square or not. Project Specifications Input for this project: Values of the grid (row by row) Output for this project: Whether or not the grid is magic square Processing Requirements Use the following template to start your project: #include<iostream> using namespace std; // Global constants const int ROWS = 3; // The number of rows in the array const int COLS = 3; // The number of columns…arrow_forwardint X[10]={2,0,6,11,4,5,9,11,-2,-1); From the code above, what is the value of X[8] ?arrow_forwardJAVA Your teacher has created two arrays, each holding the results of tests, say Test 1 and Test 2. You need to create a new array which holds the averages of these two tests. You may assume that the first element of the first test array refers to the student who also has the grade in the first element of the second test, and the last element in each array are the grades the last student earned for each test. All students received grades for both tests, meaning both test arrays are of the same length. Complete the method, named makeAverage, in the class named Grades.java. There are two parameters to this method: the first is the integer array representing the grades of the first test, and the second is the array containing the grades of the second test. The new average array should be returned by the method. The grades should be treated as double variables. For example, consider the test grades for the five students in the following arrays: [ 87 ] [ 91 ] [ 76 ] [ 76 ] [ 94 ]…arrow_forward
- an int variable k, an int array currentMembers that has been declared and initialized, an int variable nMembers that contains the number of elements in the array, an int variable memberID that has been initialized, and a bool variable isAMember, Write code that assigns true to isAMember if the value of memberID can be found in currentMembers, and that assigns false to isAMemberotherwise. Use only k, currentMembers, nMembers, and isAMember.arrow_forwardC#arrow_forwardWhat’s the difference between an array and Vector?arrow_forward
- //Required Functionvoid func(int array_1[],int array_2[],int size){ for(int i=0;i<size;i++){ if(array_2[i]>array_1[i]){ array_1[i]=array_2[i]; } } return;} //main function to test the function.int main(){ int size=6; int a[]={1,5,9,8,7,6}; int b[]={1,4,10,12,7,15}; printf("First array before function call: "); for(int i=0;i<size;i++){ printf("%d ",a[i]); } func(a,b,size); //call to the created function printf("\nFirst array after function call: "); for(int i=0;i<size;i++){ printf("%d ",a[i]); } return 0;} 1. Write the statements to do the following: write a prototype for your function in the previous problem write a main function which includes the following steps declare two arrays of ints with 25 elements each prompt the user and read values into both arrays call your function from the previous problem print both arraysarrow_forwardAn array int[] intArray can be initialized during its definition by A.) It can't be initialized B.) by writing int[] intArray = {1.0f}; C.) by writing int[] intArray = {0,1,2}; D.) by writing int[0-10] intArray = {0,1,2,3,4,5,6,7,8,9};arrow_forwardmergeAndRemove(int[], int[]) This is a public static function that takes a int[] and int[] for the parameters and returns an int[]. Given two arrays of integers. Your job is to combine them into a single array and remove any duplicates, finally return the merged array.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Database System ConceptsComputer ScienceISBN:9780078022159Author:Abraham Silberschatz Professor, Henry F. Korth, S. SudarshanPublisher:McGraw-Hill EducationStarting Out with Python (4th Edition)Computer ScienceISBN:9780134444321Author:Tony GaddisPublisher:PEARSONDigital Fundamentals (11th Edition)Computer ScienceISBN:9780132737968Author:Thomas L. FloydPublisher:PEARSON
- C How to Program (8th Edition)Computer ScienceISBN:9780133976892Author:Paul J. Deitel, Harvey DeitelPublisher:PEARSONDatabase Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781337627900Author:Carlos Coronel, Steven MorrisPublisher:Cengage LearningProgrammable Logic ControllersComputer ScienceISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education

Database System Concepts
Computer Science
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:McGraw-Hill Education

Starting Out with Python (4th Edition)
Computer Science
ISBN:9780134444321
Author:Tony Gaddis
Publisher:PEARSON

Digital Fundamentals (11th Edition)
Computer Science
ISBN:9780132737968
Author:Thomas L. Floyd
Publisher:PEARSON

C How to Program (8th Edition)
Computer Science
ISBN:9780133976892
Author:Paul J. Deitel, Harvey Deitel
Publisher:PEARSON

Database Systems: Design, Implementation, & Manag...
Computer Science
ISBN:9781337627900
Author:Carlos Coronel, Steven Morris
Publisher:Cengage Learning

Programmable Logic Controllers
Computer Science
ISBN:9780073373843
Author:Frank D. Petruzella
Publisher:McGraw-Hill Education