Question

1. Array testGrades contains NUM_VALS test scores. Write a for loop that sets sumExtra to the total extra credit received. Full credit is 100, so anything over 100 is extra credit. Ex: If testGrades = {101, 83, 107, 90}, then sumExtra = 8, because 1 + 0 + 7 + 0 is 8.

What i am given:

import java.util.Scanner;

public class SumOfExcess {
public static void main (String [] args) {
Scanner scnr = new Scanner(System.in);
final int NUM_VALS = 4;
int[] testGrades = new int[NUM_VALS];
int i;
int sumExtra = -9999; // Assign sumExtra with 0 before your for loop

for (i = 0; i < testGrades.length; ++i) {
testGrades[i] = scnr.nextInt();
}

/* Your solution goes here */

System.out.println("sumExtra: " + sumExtra);
}
}

2. Write a for loop to print all NUM_VALS elements of array hourlyTemp. Separate elements with a comma and space. Ex: If hourlyTemp = {90, 92, 94, 95}, print:

90, 92, 94, 95

Your code's output should end with the last element, without a subsequent comma, space, or newline.

What I am given:

import java.util.Scanner;

public class PrintWithComma {
public static void main (String [] args) {
Scanner scnr = new Scanner(System.in);
final int NUM_VALS = 4;
int[] hourlyTemp = new int[NUM_VALS];
int i;

for (i = 0; i < hourlyTemp.length; ++i) {
hourlyTemp[i] = scnr.nextInt();
}

/* Your solution goes here */

System.out.println("");
}
}

Answer 1

import java.util.Scanner;

public class SumOfExcess {
    public static void main(String[] args) {
        Scanner scnr = new Scanner(System.in);
        final int NUM_VALS = 4;
        int[] testGrades = new int[NUM_VALS];
        int i;
        int sumExtra = -9999;

        for (i = 0; i < testGrades.length; ++i) {
            testGrades[i] = scnr.nextInt();
        }

        sumExtra = 0;
        for (i = 0; i < NUM_VALS; ++i) {
            if (testGrades[i] > 100) {
                sumExtra += testGrades[i] - 100;
            }
        }

        System.out.println("sumExtra: " + sumExtra);
    }
}

import java.util.Scanner;

public class PrintWithComma {
    public static void main(String[] args) {
        Scanner scnr = new Scanner(System.in);
        final int NUM_VALS = 4;
        int[] hourlyTemp = new int[NUM_VALS];
        int i;

        for (i = 0; i < hourlyTemp.length; ++i) {
            hourlyTemp[i] = scnr.nextInt();
        }

        for (i = 0; i < hourlyTemp.length; ++i) {
            System.out.print(hourlyTemp[i]);
            if (i < hourlyTemp.length - 1) {
                System.out.print(", ");
            }
        }

        System.out.println("");
    }
}