java - Concatenate and sort two int arrays in to one int array -

i know similar question has been asked , have researched website. have tried use of answers syntax still not working.

i going through previous examination paper build knowledge of java. please forgive errors in code, still learning java syntax.

here question:

implement method static int[] splice(int[] v, int[] w) (assuming lengths of v , w same) returns array in elements if v , w interleaved, starting first element of v, followed first element of w, followed second element of v, etc. example, if v = { 1, 3, 5 } , w = { 2, 4, 6 } call splice should return { 1, 2, 3, 4, 5, 6 }.

if input arrays have different lengths, method should return null.

here code:

import java.util.*;  public class twoarraysbecomeone {  public static void main(string[] args) {      int[] v = { 1, 3, 5 };     int[] w = { 2, 4, 6 };      splice(v,w); }  public static int[] splice(int[] v, int[] w){      if(v != w) {         return null;     }      int[] x = new int[v.length + w.length];      (int = 0; < v.length; i++) {         x[i] = v[i] + w[i];     }      (int j = 0; j < x.length; j++) {         system.out.println(x[j]);     }      return x;      } } 

i aware current syntax producing new array x = { 3, 7, 11 }. have removed various attempts try , concatenate code causing errors in code. require pointers answer question.

again, please forgive errors in code, still learning java.

thank you.

try this

public static void main(string[] args) throws exception {     int[] v = { 1, 3, 5 };     int[] w = { 2, 4, 6 };     int[] res = splice(v, w);     system.out.println(arrays.tostring(res)); }  private static int[] splice(int[] v, int[] w) {     if (v.length != w.length) {         return null;     }     int[] = new int[v.length + w.length];     (int = 0; < v.length; i++) {         a[i * 2] = v[i];         a[i * 2 + 1] = w[i];     }     return a; } 

output

[1, 2, 3, 4, 5, 6]