comparing integer lists

[buildmaster5000]

Is this LabView, Java or C++??

In Java (the only language I know), I would use nested for loops that would compare an element in the first array wiht each element in the second array. An example is below, where any number that is found in the other array is changed to -1.

    public class ArraySort
   {
       public static void main(String[]args)
      {
         int[] num1={1,3,4,5,6,8,10,15,19,20,55,99,100,115,156,205};
         int[] num2={0,2,3,4,6,7,10,19,20,45,55,65,100,156,200,256};
      
      //check for equal variables, if one is found, set element to -1
         for(int x=0; x<num1.length; x++)
         {
            for(int a=0; a<num2.length; a++)
               if(num1[x]==num2[a])
               {
                  num1[x]=-1;
                  num2[a]=-1;
               }
         }
         	//print the arrays
         for(int x=0; x<num1.length; x++)
            System.out.print(num1[x]+" ");
      
         System.out.println();
            	      
         for(int x=0; x<num2.length; x++)
            System.out.print(num2[x]+" ");
      }
   }