Returning the non-intersection of two arrays
Ive got 2 arrays, array1 and array2, that store integer values. Id like a function that takes the two arrays and returns an array with every value that is in array1 and not array2 and array2 but not array1, so:
array1(1,2,3,4,5,6)
array2(3,4,5,6,7,8 )
nonIntersect(array1, array2) = array(1,2,7,8 )
The order of elements is not important.
Javascripts inbuilt array functions dont seem to helpful for this. The only way i can think to perform this would be to iterate over every value in array1 against everything from array2. There has to be a better way!
Cheers for any feedback
greg posted this at 12:26 — 17th May 2009.
He has: 1,581 posts
Joined: Nov 2005
Does this have to be JS and not server side?
pr0gr4mm3r posted this at 16:31 — 17th May 2009.
He has: 1,502 posts
Joined: Sep 2006
You're trying to calculate the difference between the two arrays, in PHP, that's easy using the array_diff() function.
There is also a Javascript function here.
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