Question

JAVA: array return types

May you please help me fix this coding.

Sum is SUPPOSE to be

1253

import java.util.Scanner;

public class Array {

public static int sum(int[] arr) {

int i;

int total = 0;

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

total = total + arr[i];

}

return total;

}

public static void main(String[] args) {

int[] myArray = {45, 22, 18, 89, 82, 79, 15, 69, 100, 55, 48, 72, 16, 98, 57, 75, 44, 32, 21, 14, 7, 16, 49, 58, 72};

sum(myArray);

System.out.println("Sum of whole array = " + myArray);

}

}

Answer 1

public class Array {
  public static int sum(int[] arr) {
    int i;
    int total = 0;
    for ( i =0; i < arr.length; ++i) {
      total = total + arr[i];
    }
    return total;
  }

  public static void main(String[] args) {
    int[] myArray = {45, 22, 18, 89, 82, 79, 15, 69, 100, 55, 48, 72, 16, 98, 57, 75, 44, 32, 21, 14, 7, 16, 49, 58, 72};
    int s = sum(myArray);
    System.out.println("Sum of whole array = " + s);

  }
}

Sum of whole array = 1253

Answer 2

Here is the corrected code:

javaCopy codeimport java.util.Scanner;public class Array {    public static int sum(int[] arr) {        int i;        int total = 0;        for (i = 0; i < arr.length; ++i) {
            total = total + arr[i];
        }        return total;
    }    public static void main(String[] args) {        int[] myArray = {45, 22, 18, 89, 82, 79, 15, 69, 100, 55, 48, 72, 16, 98, 57, 75, 44, 32, 21, 14, 7, 16, 49, 58, 72};        int sum = sum(myArray);
        System.out.println("Sum of whole array = " + sum);
    }

}

The main problem in the original code was that the sum of the array was being printed instead of the returned value of the sum() method. To fix this, I stored the returned value in a variable sum and printed that instead.