CountMatches

Procedure CountMatches ( test_arr, ref_arr )
INPUT: test_arr, the array use to compare with the reference array
       ref_arr, the reference array
       
OUTPUT: match_array_count, the array length of the overlap between 2 sets

match_array_count = 0

for each each_test_int in test_arr {
  for each_ref_int in ref_arr {
    if (each_test_int == each_ref_int) }
      match_array_count += 1
    }
  }
}

return match_array_count