第二题 LinkedList<int[]> listA = new LinkedList<>();             LinkedList<int[]> listB = new LinkedList<>();                for(int j=0;j<2;j++){                 for(int k=0;k<2;k++){                     if(a[j][k]!=b[j][k]){                         if(a[j][k]==1){                             listA.add(new int[]{j,k});                         }                         if(b[j][k]==1){                             listB.add(new int[]{j,k});                         }                     }                                 }             }                          for(int j=0;j<listA.size();j++){                 res[i] += (Math.abs(listA.get(j)[0]-listB.get(j)[0]) + Math.abs(listB.get(j)[1]-listB.get(j)[1]) );             }