I have 2 arrays. One array has about 100 rows, 40 dimensions. The other has about 7000 rows, 1 dimension. <BR><BR>I need to find if a string in array 1 is in array 2. <BR><BR>My first instinct is a nested loop. I don't like this idea. <BR><BR>I read the FAQ on this and I've looked at the Filter function as well as the PositionInArray function. <BR><BR>Of these 2 (or any other that you've enountered) what is the quickest? <BR><BR>I know the best answer is "try it and see" but I'm sure someone before has asked himself this question. <BR><BR>Any suggestions?