unset rightmost set bit done

Author: Ram swaroop

src/me/ramswaroop/bits/RightmostSetBit.java

@@ -21,12 +21,25 @@ public static int getRightmostSetBitPosition(long n) {
         return position;
     }
 
+    public static long unsetRightmostSetBit(long n) {
+        return n & (n - 1);
+    }
+
     public static void main(String a[]) {
         System.out.println(getRightmostSetBitPosition(0));
         System.out.println(getRightmostSetBitPosition(1));
         System.out.println(getRightmostSetBitPosition(2));
         System.out.println(getRightmostSetBitPosition(5));
         System.out.println(getRightmostSetBitPosition(18));
         System.out.println(getRightmostSetBitPosition(19));
+
+        System.out.println("========================");
+
+        System.out.println(unsetRightmostSetBit(0));
+        System.out.println(unsetRightmostSetBit(2));
+        System.out.println(unsetRightmostSetBit(12));
+        System.out.println(unsetRightmostSetBit(16));
+        System.out.println(unsetRightmostSetBit(18));
+        System.out.println(unsetRightmostSetBit(-1));
     }
 }