Combine two integer arrays into one array in java

Question

I've seen similar questions and none provide the answer that I'm looking for, so I apologize in advance if this is considered a duplicate. I'm trying to combine arrays {1, 2, 3} and {4, 5, 6} into {1, 2, 3, 4, 5, 6}. What am I doing incorrectly? I'm super new to java. Sorry if the question is stupid. ``` public class combine { public static void main(String[]args){ int[]a = {1, 2, 3}; int[]b = {4, 5, 6}; int[]c = new int[a+b]; for(int i=0; i<a.length; i++) System.out.print(c[i]+" "); } public static int[]merge(int[]a, int[]b){ int[]c = new int[a.length+b.length]; int i; for(i=0; i<a.length; i++) c[i] = a[i]; for(int j=0; j<b.length; j++) c[i++]=b[j]; return c; } } ```

Accepted Answer

Instead of

```
int[]c = new int[a+b];
```

You need to call your merge method and assign the result to the array like :

```
int[]c = merge(a,b);
```

Also you for loop should be :

```
int[]c = merge(a,b);
for(int i=0; i<c.length; i++)
    System.out.print(c[i]+" ");
```

Combine two integer arrays into one array in java

Solution

Problem

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