Hi,

I'm trying to look through a two dimensional array and indicate all repeating elements. I'm sure there is some clever way to do it with two lines of code, but I can't think of one.

If I have an array that looks like:

@all=(["what", "is", "the", "matrix"],["matrix", "reloaded", "is", "no", "good"]);

I'd like to have an array which looks like:

([0, 1, 0, 1], [1, 0, 1, 0, 0])

So that all matches are pointed out. What would be the best way to do this?

p.s. a simple but comprehensive explanation of the map function will also be appreciated.

In reply to two dimensional array lookup by dannoura

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