倍逆序式
2019独角兽企业重金招聘Python工程师标准>>>
import java.util.Scanner;
public class Testa {
public static void main(String[] args) {System.out.println("请输入n:(代表求多少个连续的合数)");Scanner reader=new Scanner(System.in);int n=reader.nextInt();int min=(int) Math.pow(10,n-1);int max=(int) (Math.pow(10,n)-1);int total=0;for(int i=min;i<max;i++){boolean x=f(i);if(x){boolean ok=k(i);if(ok){System.out.println("符合条件:"+i);}}}} //去重public static boolean f(int n){String result=String.valueOf(n);int length=result.length();for(int i=0;i<length-1;i++){for(int j=i+1;j<length;j++){char a=result.charAt(i);char b=result.charAt(j);if(a==b){return false;}}}return true;}//将数逆序,n代表传入的数public static boolean k(int n){int m=n;String result=String.valueOf(m);int leng=result.length()-1;int length=leng;int temp;int sum;sum=0;temp=m%10;sum =(int) (sum+Math.pow(10,leng)*temp);m=m/10;while(m>=10){temp=m%10;leng--;sum=(int) (sum+Math.pow(10,leng)*temp);m=m/10;}leng--;sum=(int) (sum+Math.pow(10,leng)*m);String result1=String.valueOf(sum);int length1=result1.length();if(n<sum){int k=sum/n;if(k*n==sum){return true;}}return false;}}
转载于:https://my.oschina.net/u/2511906/blog/847272
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