Write a method with the header public static void swapAdjacent(int[] values) that takes a reference to an array of integers values and swaps adjacent pairs of elements: values[0] with values[1], values[2] with values[3], etc. For example, if you add the following test code to your main method: int[] a1 = {0, 2, 4, 6, 8, 10}; swapAdjacent(a1); System. out. println(Arrays. toString(a1));

public static void swapPairs(int[] a){

   int len=a.length;

       if(len%2 ==0){

           for(int i=0; i<len; i=i+2){

               a[i]=a[i+1];

               a[i+1]=a[i];

               int[] b={a[i]+a[i+1]};

           }    

       }

       if(len%2 !=0){

           for(int j=0; j<len; j=j+2){

               a[j]=a[j+1];

               a[j+1]=a[j];

               a[len-1]=a[len-1];

               int[] b={a[j]+a[j+1]+a[len-1]};

           }

       }    

}

public static void printArray(int[] a){

   System.out.println(a);

}

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