I need to develop a JAVA appli/cation that prom/pts a user to create fi/ve stude
ID: 3699151 • Letter: I
Question
I need to develop a JAVA appli/cation that prom/pts a user to create fi/ve students by en/tering a first name, last n/ame, and a single test score bet/ween 0 and 100. After the stu/dents have been entered, sort the students by test sc/ore using the selection so/rt method in descending order (highest to lowest) and print the /list of students to the Co/nsole. I have the Sorting CLASS prepared to sort the students, demonstrating polymorphism with interfaces, and develop at least two other classes (in addition to the driver class) for this assignment.
////////CLASS SORTING////////
public class Sorting
{
public static void selectionSort (Comparable<Object>[] list)
{
int min;
Comparable<Object> temp;
for (int index = 0; index < list.length-1; index++)
{
min = index;
for (int scan = index+1; scan < list.length; scan++)
if (list[scan].compareTo(list[min]) < 0)
min = scan;
temp = list[min];
list[min] = list[index];
list[index] = temp;
}
}
public static void insertionSort (Comparable<Object>[] list)
{
for (int index = 1; index < list.length; index++)
{
Comparable<Object> key = list[index];
int position = index;
while (position > 0 && key.compareTo(list[position-1]) < 0)
{
list[position] = list[position-1];
position--;
}
list[position] = key;
}
}
}
Explanation / Answer
To get user details like first name , last name and score.
public class StudentDetails {
public static void main(String[] args)
{
Scanner input = new Scanner(System.in);
System.out.print("Enter the number of students:- ");
int num = input.nextInt();
int[] grades = new int[num];
String[] fname = new String[num];
String[] lname = new String[num];
int grade = 0;
String firstname = "";
String lastname = "";
for(int i = 0; i < num; i++)
{
firstname = input.next();
lastname = input.next();
grade = input.nextInt();
fname[i] = firstname;
lname[i] = lastname;
grades[i] = grade;
System.out.println("");
}
}
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