Niu Ke (9) Abnormal jumping stairs

// Title description 
// A frog can jump up 1 steps at a time, or 2 steps at a time...it can also jump up n steps. 
// Find how many ways the frog can jump on a n-level stair. 
    public static int JumpFloorII(int target) { 
        if (target==0||target==1){ 
            return 1; 
        } 
        int count=0; 
        for (int i=1;i<=target;i++){ 
            count += JumpFloorII(target-i); 
        } 
        return count; 
    }