牛客NC68 跳台阶(dp)

入门级dp

    public int JumpFloor(int target) {
    
    
        if(target < 2) return 1;
        int[] dp = new int[target + 1];
        dp[0] = 1;
        dp[1] = 1;
        for(int i = 2; i < target + 1 ;i++)
            dp[i] = dp[i-1] + dp[i-2];
        return dp[target];
    }