世界那么大，我要学编程看看！

package vvkg;import java.util.Scanner;public class CC1{ public static void main(String[] args) { int num; Scanner reader=new Scanner(System.in); System.out.print("请输入长度: "); num=reader.nextInt(); int[] n=.

package vvkg;import java.util.Scanner;public class A2 { public static void main(String[] args) { Scanner inp = new Scanner(System.in); System.out.println("请输入数字："); int n = inp.nextInt(); System.out.println(factor(n).

package vvkg;import java.util.Scanner;public class A1{ public static void main(String[] args) { Scanner A=new Scanner(System.in); System.out.print("请输入第一个数x："); double x=A.nextDouble(); System.out.print("请输入第二个数n：");.

import java.util.*;public class App1{ public static void main(String[] args){ int n,i=1,sum=0; Scanner buf=new Scanner(System.in); do{ System.out.print("输入正整数："); n=buf.nextInt(); }while(n<=0); while(i<=n) su.

public class App4_5{ public static void main(String[] args){ int i,n=10,s=0; for(var j=1;j<=n;j++) s=s+j; System.out.println("Sum=1+……+"+n+"="+s); s=0; System.out.print("Sum="); for(i=n;i>1;i--){ s+=i; Sys.