question: public static void mergeArrays ( Object [ ] arr1 , Object [ ] arr2 , Object [ ] destinationArray ) { System . arraycopy ( arr1 , 0 , destinationArray , 0 , arr1 . length ) ; System . arraycopy ( arr2 , 0 , destinationArray , arr1 . length , arr2 . length ) ; }
target:  Merges arrays into one larger array