在C#中递归打印字符串fibonacci [英] Print a string of fibonacci recursively in C#

问题描述

可以不使用while循环来完成吗?

Can that be done with no while loops?

static void Main(string[] args)
{
    Console.WriteLine("Please enter a number");
    int number = Convert.ToInt32(Console.ReadLine());
    Console.WriteLine(" #" + Fibonacci(number));
}

public static int Fibonacci(int number)
{
    if (number <= 1)
    {
        return 1;
    }
    else
    {
        return Fibonacci(number - 2) + Fibonacci(number - 1);
    }
}

我什至无法在基本案例的主体中添加 Console.WriteLine ，因为它执行了[number]次；不知道如何做到无循环...

I can't even add a Console.WriteLine in the body of base case since it gets executed [number] number of times; Not sure how to do this without loops...

推荐答案

static void Main(string[] args)
{
    Console.WriteLine("Please enter a number");
    int number = Convert.ToInt32(Console.ReadLine());
    Fibonacci(0, 1, 1, number);
}   

public static void Fibonacci(int a, int b, int counter, int number)
{
    Console.WriteLine(a);
    if (counter < number) Fibonacci(b, a+b, counter+1, number);
}

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