//斐波那契数列
import java.util.Scanner;
public class homework2{
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("请输入一个整数:");
int n = sc.nextInt();
int m = digui(n);
System.out.println(m);
}
public static int digui(int m){
if(m==1 || m==2){
return m;
}
return digui(m-1) + digui(m-2);
}
}
//输入2个数,给出一个两数之间的随机数
import java.util.Scanner;
class class1{
public static void main(String[]arg){
Scanner sc = new Scanner(System.in);
System.out.println("输入2个数,给出一个两数之间的随机数,请输入第一个数:");
int a = sc.nextInt();
System.out.println("请输入第二个数:");
int b = sc.nextInt();
if(b>a){
int c = b;
b = a;
a = c;
}
System.out.println(Math.floor(Math.random()*(a-b)+b));
}
}
import java.util.Scanner;
//判断输出字符串是否为回文字符串
class class3{
public static void main(String[] args) {
System.out.println("请输入一串字符串");
String a = new Scanner(System.in).nextLine();
boolean m = huiwen(a);
System.out.println(m);
}
public static boolean huiwen(String a){
int indexFirst = 0;
int indexEnd = a.length()-1;
while(indexFirst <= indexEnd){
if (a.charAt(indexFirst) != a.charAt(indexEnd)){
return false;
}
indexFirst++;
indexEnd--;
}
return true;
}
}