手把手带你用java搞定青蛙跳台阶

public static void main(String[] args) {
    Scanner scanner = new Scanner(System.in);
    int n = scanner.nextInt();
    int ret = frogJumping(n);
    System.out.println(ret);
}
public static int frogJumping(int n) {
    if(n == 1) {
        return 1;
    } else if(n == 2) {
        return 2;
    } else {
        return frogJumping(n - 1) + frogJumping(n - 2);
    }
}

#include<stdio.h>
int FrogJumping(int n)
{
	if (n == 1)
	{
		return 1;
	}
	else if (n == 2)
	{
		return 2;
	}
	else
	{
		return FrogJumping(n - 1) + FrogJumping(n - 2);
	}
}
int main()
{
	int n = 0;
	scanf("%d", &n);
	int ret = FrogJumping(n);
	printf("%d级台阶有%d种跳法", n, ret);
	return 0;
}