I have 2 arrays, and I need to make sure all elements of array 1 are in array 2, but array 2 can have extra elements.

Examples:

OK:

@array1 = (a b c)
@array2 = (a b c)

[download]

OK:

@array1 = (a b c)
@array2 = (a b c d)

[download]

OK:

@array1 = (p d q)
@array2 = (d p q)

[download]

NOT OK:

@array1 = (a b c e)
@array2 = (a b c d)

[download]

The method that I've come up with so far is clunkey, with a copy of array2, and then 2 foreach loops, deleteing items from my copy - it's a mess and seems to like messing up. I'm looking for something more elegant.

Thank you monks!

In reply to Compare arrays by japhmi

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