public int matchUp(int[] nums1, int[] nums2) {

 //if nums1 is smaller than nums2 (length) run upto nums1 and vice versa
 int min=(nums1.length<=nums2.length)? nums1.length:nums2.length;
 int dif,counter=0;
 for(int i=0;i<min;i++)
 {
  dif=Math.abs(nums1[i]-nums2[i]);
  if(dif<=2 && dif >0)
  {
   counter++;
  }
 }

 return counter;
}