Array

Question

You are given a program that takes the length of the array as the first input, creates it, and then takes the next inputs as elements of the array.

Complete the program to go through the array and calculate the sum of the numbers that are multiples of 4.

Sample Input
5
4
9
16
2
7

Sample Output
20

import java.util.Scanner;

public class Main {

public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
int length = scanner.nextInt();
int[] array = new int[length];
for (int i = 0; i < length; i++) {
array[i] = scanner.nextInt();
}

//your code goes here
int sum = 0;

for (int x = 0; x < array.length; x++){
if (array[x] % 4 == 0){
sum += array[x];
}
System.out.println(sum);

}
}
}

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Why my code is not working. Plz help me!

Answer 1

you are printing sum inside your last loop: you must move it outside... here's the corrected version of your code:

https://code.sololearn.com/c39JHRhqq5pq/?ref=app

Answer 2

// one loop version, avoid array creation:

import java.util.Scanner;

public class Main {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
int length = scanner.nextInt();
int sum = 0;
int val;
for (int i=0; i<length; ++i) {
val = scanner.nextInt();
if (val%4==0) sum += val;
}
System.out.println(sum);
}
}

Answer 3

import java.util.Scanner;

public class Main {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
int length = scanner.nextInt();
int sum = 0;
int val;
for (int i=0; i<length; ++i) {
val = scanner.nextInt();
if (val%4==0) sum += val;
}
System.out.println(sum);
}
}

Good Luck

Answer 4

Try this ,

int sum = 0;

for (int x = 0; x < array.length; x++) {
if (array[x] % 4 == 0) {
sum += array[x];
}
}
System.out.println(sum);
}
}

Answer 5

import java.util.Scanner;
public class Main {

public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
int length = scanner.nextInt();
int[] array = new int[length];
for (int i = 0; i < length; i++) {
array[i] = scanner.nextInt();
}

//your code goes here
int sum = 0;

for (int i = 0; i < length; i++)
{
if (array[i]%4==0){
sum += array[i];
}
}
System.out.println(sum);

}
}

Answer 6

import java.util.Scanner;

public class Main {

public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
int length = scanner.nextInt();
int[] array = new int[length];
int sum = 0;
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for (int i = 0; i < length; i++) {
array[i] = scanner.nextInt();
if(array[i]%4 == 0){
sum = sum + array[i];
}
}
System.out.println(sum);
}
}

Answer 7

can someone explain what the question is even asking? I don't understand what it wants me to do