text: Find extra element in the second array | Java implementation of the approach ; Function to return the extra element in B [ ] ; To store the result ; Find the XOR of all the element of array A [ ] and array B [ ] ; Driver code
code: class GFG { static int extraElement ( int A [ ] , int B [ ] , int n ) { int ans = 0 ; for ( int i = 0 ; i < n ; i ++ ) ans ^= A [ i ] ; for ( int i = 0 ; i < n + 1 ; i ++ ) ans ^= B [ i ] ; return ans ; } public static void main ( String [ ] args ) { int A [ ] = { 10 , 15 , 5 } ; int B [ ] = { 10 , 100 , 15 , 5 } ; int n = A . length ; System . out . println ( extraElement ( A , B , n ) ) ; } }