Answer:
The program in Java is as follows:
import java.util.*;
public class Main{
public static int countPerfect(int [] scores, int n){
int count = 0;
for(int i = 0;i<n;i++){
if(scores[i] == 100) {count++;} }
return count; }
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
int n;
System.out.print("Number of scores: ");
n = input.nextInt();
if(n<1 || n>20){n=20;}
int [] scores = new int[n];
for(int i = 0;i<n;i++){
scores[i] = input.nextInt(); }
System.out.print("Perfect Scores: "+countPerfect(scores,n));
}
}
Explanation:
The countPerfect function begins here
public static int countPerfect(int [] scores, int n){
This initializes the count to 0
int count = 0;
This iterates through the array elements
for(int i = 0;i<n;i++){
If current score is 100, count is incremented by 1
if(scores[i] == 100) {count++;} }
This returns the value of count
return count; }
The main begins here
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
This declares the number of scores, n
int n;
Prompt to enter the number of scores
System.out.print("Number of scores: ");
This gets input for n
n = input.nextInt();
If input is less than 1 or greater than 20, n is set to 20
if(n<1 || n>20){n=20;}
This declares the scores as an array
int [] scores = new int[n];
This iterates through the array and get inputs for each score
for(int i = 0;i<n;i++){
scores[i] = input.nextInt(); }
This calls the function and print the number of perfect scores
System.out.print("Perfect Scores: "+countPerfect(scores,n));
}
