@@ -0,0 +1,208 @@
+public class JumpFloorII %7B%0A    public int jumpFloorII(int target) %7B%0A        if(target%3C=0)%0A            return 0;%0A        if(target == 1)%0A            return 1;%0A        return (int)Math.pow(2,target-1);%0A    %7D%0A%7D%0A

Create JumpFloorII.java