iphone - NSMutable Array object compare -

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i want compare mutablearray object condition below...

array1 = 1,2,3,4; array2 = 2,1,4,3,6,7;

compare 2 array object & if object in array not add otherwise add in array3.

all array nsmutable array

please help

the easiest way using sets

nsmutableset *set = [nsmutableset setwitharray:array1]; [set addobjectsfromarray:array2];  nsarray *array = [set allobjects];

array give merged third array without duplicates.


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