C++ :

#include <iostream>
#include<cstring>
using namespace std;

bool vis[10];
int num[3];
void solve(int n)
{
    if(n==3&&num[0]*2==num[1]&&num[0]*3==num[2]) cout<<num[0]<<' '<<num[1]<<' '<<num[2]<<endl;
    for(int i=1;i<=9;i++)
    {
        if(!vis[i])
        {
            vis[i]=true;
            for(int j=1;j<=9;j++)
            {
                if(!vis[j])
                 {
                     vis[j]=true;
                     for(int k=1;k<=9;k++)
                     {
                         if(!vis[k])
                         {
                             vis[k]=true;
                             num[n]=i*100+j*10+k;
                             solve(n+1);
                             vis[k]=false;
                         }
                     }
                     vis[j]=false;
                 }
            }
            vis[i]=false;
        }
    }
}
int main()
{
    memset(vis,false,sizeof(vis));
    solve(0);
}

Java :

import java.util.Arrays;

public class Main{
	public static boolean Judge(int a,int b,int c){
		boolean flag=true;
		int nums[]=new int[9];
		nums[0]=a/100;
		nums[1]=a/10%10;
		nums[2]=a%10;
		nums[3]=b/100;
		nums[4]=b/10%10;
		nums[5]=b%10;
		nums[6]=c/100;
		nums[7]=c/10%10;
		nums[8]=c%10;
		Arrays.sort(nums);//从小到大排序
		for(int i=0;i<8;i++){
			if(nums[i]==nums[i+1]||nums[i]==0){//判断重复和0
				flag=false;
				break;//只要有重复就跳出循环
			}else{
				flag=true;
			}
		}
		return flag;
		}
	public static void main(String[]args){
		for(int i=123;i<=333;i++){//min=123;max=999
			int j=i*2;
			int k=i*3;
			if(Judge(i,j,k)){
				System.out.println(i+" "+j+" "+k);
			}
		}
		
	}
}

Python :

# coding=utf-8
d_set={1,2,3,4,5,6,7,8,9}

for i in d_set:
    d1=i
    d_set_i=d_set.copy()
    d_set_i.remove(i)
    for j in d_set_i:
        d2=j
        d_set_j=d_set_i.copy()
        d_set_j.remove(j)
        for k in d_set_j:
            d3=k
            d_set_k=d_set_j.copy()
            d_set_k.remove(k)


            for a in d_set_k:
                d4=a
                d_set_a=d_set_k.copy()
                d_set_a.remove(a)
                for b in d_set_a:
                    d5=b
                    d_set_b=d_set_a.copy()
                    d_set_b.remove(b)
                    for c in d_set_b:
                        d6=c
                        d_set_c=d_set_b.copy()
                        d_set_c.remove(c)

                        for x in d_set_c:
                            d7=x
                            d_set_x=d_set_c.copy()
                            d_set_x.remove(x)
                            for y in d_set_x:
                                d8=y
                                d_set_y=d_set_x.copy()
                                d_set_y.remove(y)
                                for z in d_set_y:
                                    d9=z
                                    n1=d1*100+d2*10+d3
                                    n2=d4*100+d5*10+d6
                                    n3=d7*100+d8*10+d9
                                    if n3==3*n1 and n2==2*n1:
                                        print(n1,n2,n3)