下面程序NUM为定值是可以运行，若用循环for(NUM=1;NUM<=20;NUM++)则出错
int Counter[];
        int Sum[];
        Counter=new int[40];
        Sum=new int[40];
        int Num=20;
        int Inum;
        int Jcon=39;
        int n;
        int m;
        
        for(Num=20;Num>0;Num--)
        {
            //////
            for(int i=0;i<40;i++)//初始化数组
            {
                Counter[i]=0;
            }
            
            Counter[Jcon]=Num;
            for(Inum=1;Inum<NUM;INUM++) 乘几次
            {
                for(n=0;n<40;n++)
                {
                     Counter[n]=Counter[n]*Num;
                }
                for(Jcon=39;Jcon>0;Jcon--)
                {
                     Counter[Jcon-1]=Counter[Jcon-1]+Counter[Jcon]/10;
                     Counter[Jcon]=Counter[Jcon]%100%10;                                                
                }
                    
                                            
            }
            ///////
            /*for(int s=39;s>=0;s--)
            {
                Sum[s]=Sum[s]+Counter[s];
            }
            for(Jcon=39;Jcon>=1;Jcon--)
            {
                Sum[Jcon-1]=Sum[Jcon-1]+Sum[Jcon]/10;
                Sum[Jcon]=Sum[Jcon]%10;                                                
            }*/
            for(int h=0;h<=39;h++)
            {
                System.out.print(Counter[h]);
            }
            System.out.println();
        
        }