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  • How to get Common Values from two Arrays

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    This is a simple method to compare two arrays and get all the common objects from these arrays.

    Take two arrays(say firstArray & secondArray)

    NSMutableSet* arraySet1 = [NSMutableSet setWithArray:firstArray];  //create NSMutableSet for firstArray
    NSMutableSet* arraySet2 = [NSMutableSet setWithArray:secondArray];  //create NSMutableSet for secondArray
    
    [arraySet1 intersectSet:arraySet2];     //this will assign all common(intersecting) values of two sets to arrayset1
    
    
    NSArray* arrayResult = [arraySet1 allObjects]; // assign all the object of arraySet1 to arrayResult
    

    For Example:

    firstArray=(
        abc,
        pqr
    )
    
    secondArray=(
        abc,
        pqr
    )
    
    arrayResult is=(
        pqr
    )
    

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