Question

Arrays

In this homework, create two arrays – studentName and studentScore (String and Int types). Write a method (getData) that would ask user to enter a set of data – for example, five student names and corresponding scores.

This program should also have the following methods:

    getSum. This method should accept a studentScore array as its argument and return the sum of the values in the array.

    getAverage. This method should accept a studentScore array as its argument and return the average of the values in the array. Note: this should use getSum method to get the total.

    printHighest. This method should accept a both arrays as its arguments, determine the highest value in the array, and print the highest value along with the student name who earned the highest score.

    printLowest. This method should accept a both arrays as its argument, determine the lowest value in the array, and print the lowest value along with the student name who earned the highest score.

printAboveAvg. This method should accept a both arrays as its argument, determine the average score (using getAverage method), and then list students who earned score above the average.

printBelowAvg. This method should accept a both arrays as its argument, determine the average score (using getAverage method), and then list students who earned score below the average.

Answer 1

If you have any doubts, please give me comment...

import java.util.*;

public class ArraysExec{

public static void main(String[] args) {

String studentName[] = new String[5];

int studentScore[] = new int[5];

getData(studentName, studentScore);

System.out.println("Average: "+getAverage(studentScore));

printHighest(studentName, studentScore);

printLowest(studentName, studentScore);

printAboveAvg(studentName, studentScore);

printBelowAvg(studentName, studentScore);

}

public static void getData(String studentName[], int studentScore[]){

Scanner keyboard = new Scanner(System.in);

System.out.println("Enter "+studentScore.length+" students Data: ");

for(int i=0; i<studentScore.length; i++){

System.out.print("Enter student name: ");

studentName[i] = keyboard.next();

System.out.print("Enter student score: ");

studentScore[i] = keyboard.nextInt();

}

}

public static int getSum(int studentScore[]){

int sum = 0;

for(int i=0; i<studentScore.length; i++){

sum += studentScore[i];

}

return sum;

}

public static double getAverage(int studentScore[]){

return (double)getSum(studentScore)/studentScore.length;

}

public static void printHighest(String studentName[], int studentScore[]){

int highestScoreInd = 0;

for(int i=1; i<studentName.length; i++){

if(studentScore[i]>studentScore[highestScoreInd]){

highestScoreInd = i;

}

}

System.out.println("Highest score:");

System.out.println("Name: "+studentName[highestScoreInd]);

System.out.println("Score: "+studentScore[highestScoreInd]);

}

public static void printLowest(String studentName[], int studentScore[]){

int lowestScoreInd = 0;

for(int i=1; i<studentName.length; i++){

if(studentScore[i]<studentScore[lowestScoreInd]){

lowestScoreInd = i;

}

}

System.out.println("Lowest score:");

System.out.println("Name: "+studentName[lowestScoreInd]);

System.out.println("Score: "+studentScore[lowestScoreInd]);

}

public static void printAboveAvg(String studentName[], int studentScore[]){

System.out.println("Above average: ");

double avgScore = getAverage(studentScore);

for(int i=0; i<studentScore.length; i++){

if(avgScore<studentScore[i])

System.out.println(studentName[i]+" "+studentScore[i]);

}

}

public static void printBelowAvg(String studentName[], int studentScore[]){

System.out.println("Below average: ");

double avgScore = getAverage(studentScore);

for(int i=0; i<studentScore.length; i++){

if(avgScore>studentScore[i])

System.out.println(studentName[i]+" "+studentScore[i]);

}

}

}