text: Reverse actual bits of the given number | Java implementation to reverse bits of a number ; function to reverse bits of a number ; traversing bits of ' n ' from the right ; bitwise left shift ' rev ' by 1 ; if current bit is '1' ; bitwise right shift ' n ' by 1 ; required number ; Driver code
code: class GFG { public static int reverseBits ( int n ) { int rev = 0 ; while ( n > 0 ) { rev <<= 1 ; if ( ( int ) ( n & 1 ) == 1 ) rev ^= 1 ; n >>= 1 ; } return rev ; } public static void main ( String [ ] args ) { int n = 11 ; System . out . println ( reverseBits ( n ) ) ; } }