摘要： class Fbo{public static void main(String[]args){System.out.println(fn(40));System.out.println(fn1(40));}public static long fn(int n){if(n<1)return -1;int x=1;int y=1;int sum=0;for(int i=0;i<n-2;i++){sum=x+y;x=y;y=sum;}return sum;} 阅读全文

摘要： import java.util.*;public class Product{public static void main(String args[]){Scanner reader=new Scanner(System.in);double pdu=1;while(reader.hasNextInt()){double x=reader.nextInt();pdu=pdu*x;}System.out.println("所输入的数的乘积是："+pdu);}} 阅读全文

摘要： class Rectange{public static void dic(int x, int y){for(int i=1;i<=x;i++){for(int j=1;j<=y;j++){ System.out.print("* "); } System.out.println();}}public static void main(String[]args){dic(3,4);}} 阅读全文

摘要： public class Tz{public static void main(String args[]){int sum=0,i=1,max=200;while(true){i++;sum=sum+i;if(sum>=8888)break;}System.out.println("1+2+...n<8888"+"的最大整数是："+(i-1));for(i=1,sum=0;i<=max;i++){if(i%7!=0){continue;}sum=sum+i;}System.out.println("能被7整除的数的和：&qu 阅读全文