题解 | #剪绳子#

    public int cutRope(int target) {
        if(target <= 3){
            return target-1;
        }
        int num = 0;
     if(target % 3 == 0){
         num = (int)Math.pow(3,target/3);
     }else if(target % 3 == 1){
         num = (int)Math.pow(3,target/3-1)*4;
     }else{
         num = (int)Math.pow(3,target/3)*2;
     }
        return num;
    }
}