import java.util.*;
public class swapALL
{
   public static void main(String [] args)
   {
       int[] mudkip = {12, 34, 56};
       int[] marshstomp = {20, 50, 80};
       swapALL(mudkip, marshstomp);
       System.out.println(Arrays.toString(mudkip));
       System.out.println(Arrays.toString(marshstomp));
    }
   public static void swapALL(int[] mudkip, int[] marshstomp)
   {
      int[] temp = new int[mudkip.length];
      for(int i = 0; i < temp.length; i++)
      {
          temp[i] = mudkip[i];

      }
       for(int i = 0; i < temp.length; i++)
      {
          mudkip[i] = marshstomp[i];

      }
       for(int i = 0; i < temp.length; i++)
      {
          marshstomp[i] = temp[i];

      }
   }
}

import java.util.*;
public class Merge
{
   public static void main(String [] args)
   {
       int[] a1 ={12, 34, 56};
       int[] a2= {7, 8, 9, 10};
       int[] a3 = merge(a1, a2);
       System.out.println(Arrays.toString(a3));
   }
   public static int[] merge(int[] a1, int[] a2)
   {
       int[] a3 = new int[a1.length + a2.length];
       int count = 0;
       for(int i = 0; i < a1.length; i++)
       {
           a3[i] = a1[i];
           count++;
       }
       for(int x = 0; x < a2.length; x++)
       {
           a3[count] = a2[x];
           count++;
       }
       return a3;
   }
}