histogram

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

class kulka
{
    public:
  kulka *next;
  kulka *down;
  int v;
  kulka(int value):next(NULL),down(NULL),v(value){};
  kulka():next(NULL),down(NULL),v(rand()%100){};

  void add_1(kulka *new_one)
  {
      if(down) down->add_1(new_one);
      else  down=new_one;

  }
  void show()
  {
      kulka *temp = this;
      while(temp)
      {
          kulka *temp2 = temp;
          while(temp2)
          {

              cout<<temp2->v<<"  ";
              temp2=temp2->next;
          }
          cout<<endl;

          temp=temp->down;
      }
  }

  void show2()
  {
      if(down) down->show2();
      cout<<v<<"\t";
      if(next) next->show2();
  }

  void add_2(kulka *new_one)
  {
      if(new_one->v/10==v)
      {
          if(next==NULL) next=new_one;
          else
          {
              new_one->next=next;
              next=new_one;
          }


      }
      else
      {
          down->add_2(new_one);
      }

  }

};


int main()
{
    kulka *root = new kulka(0);

    for(int i=1;i<10;i++)
    {
        kulka *new_one = new kulka(i);
        root->add_1(new_one);

    }

    for(int i=0;i<90;i++)
    {
        kulka *new_one = new kulka;
        root->add_2(new_one);
    }
    root->show();

    return 0;
}