I would like to make a sum of 2 arrays. I don't know where is the mistake. here is the code:
public static int[] Arr(int a[], int b[]) {
System.out.println(a[] + b[]);
return a[] + b[];
}
Asked
Active
Viewed 82 times
-4
dreamcrash
- 47,137
- 25
- 94
- 117
lezio
- 1
-
5What do you mean by "the sum of two arrays"? What's the expected output? – sp00m Jan 11 '21 at 12:42
-
Have the arrays the same length? – Aalexander Jan 11 '21 at 12:43
-
Does this answer your question? https://stackoverflow.com/questions/80476/how-can-i-concatenate-two-arrays-in-java – dreamcrash Jan 11 '21 at 13:00
-
@sp00m can you add https://stackoverflow.com/questions/80476/how-can-i-concatenate-two-arrays-in-java as the correct dup? – dreamcrash Jan 11 '21 at 13:08
1 Answers
0
I think he wants something like this :
public static int[] Arr(int a[], int b[]) {
int[] sum = new int[a.length + b.length];
for (int i = 0; i<a.length;i++) {
sum[i] = a[i];
}
for (int i = a.length; i<a.length + b.length;i++) {
sum[i] = b[i-a.length];
}
System.out.println(Arrays.toString(sum));
return sum;
}
AirlineDog
- 520
- 8
- 21
-
thank you bro! this is what i meant! but it gives me an error to "Arrays.toString it tells me that ARRAY CANNOT BE RESOLVED – lezio Jan 11 '21 at 12:58
-
You have to import java.util.Arrays in the first lines of your code – AirlineDog Jan 11 '21 at 13:01
-
-
-
There is a tick symbol at the right of the answer https://meta.stackexchange.com/questions/5234/how-does-accepting-an-answer-work – AirlineDog Jan 11 '21 at 14:09