В данном натуральном числе переставить цифры таким образом, чтобы образовалось наименьшее число, записанное этими цифрами

#include <iostream>
 
using namespace std;
 
int main(int argc, char * argv[])
{
    int scoreBalls[20] = {1, 0, 0, 2, 4, 1, 1, 0, 2, 0, 0, 0, 2, 1, 3, 4, 5, 1, 0, 0};
    int missingBalls[20] = {2, 0, 1, 0, 2, 2, 0, 1, 2, 0, 1, 0, 1, 2, 1, 0, 0, 2, 1, 0};
    int countOfVictories = 0;
    int countOfNobodies = 0;
    int countOfDefeats = 0;
 
    for (int i = 0; i < 20; i++)
    {
        cout << i + 1 <<" Match: ";
        if(scoreBalls[i] < missingBalls[i])
        {
            cout << "DEFEAT." << '\n';
            countOfDefeats++;
        }
        if(scoreBalls[i] > missingBalls[i])
        {
            cout << "VICTORY." << '\n';
            countOfVictories++;
        }
        if(scoreBalls[i] == missingBalls[i])
        {
            cout << "NOBODY." << '\n';
            countOfNobodies++;
        }   
    }
    cout << "Count of victories:" << countOfVictories << '\n';
    cout << "Count of defeats:" << countOfDefeats << '\n';
    cout << "Count of nobodies:" << countOfNobodies << '\n';
    return 0;
}

#include <iostream>
 
int main(){
  char buf[] ="c f t t         abcdfg    tryhu jjjjj   kkkk kkkkk    k     m      ";
  int count = 0, max = 0;
  for(int i = 0; buf[i] != '\0';i++){
      if(buf[i] == ' '&& buf[i + 1] == ' '){ count ++;}
      else count = 0;
      if(count > max ) max = count;
  }std::cout << max + 1;
  system("pause");
  return 0;
}

#include <iostream>
#include <string>
 
using namespace std;
 
struct Book
{
    string nameOfAuthor;
    string nameOfBook;
    int yearOfPublication;
};
 
int main(int argc, char * argv[])
{
    Book books[5];
    books[0].nameOfAuthor = "Petrov A.A.";
    books[0].nameOfBook = "Night. Part 1";
    books[0].yearOfPublication = 2000;
 
    books[1].nameOfAuthor = "Petrov A.A.";
    books[1].nameOfBook = "Night. Part 2";
    books[1].yearOfPublication = 2001;
 
    books[2].nameOfAuthor = "Petrov A.A.";
    books[2].nameOfBook = "Night. Part 3";
    books[2].yearOfPublication = 2002;
 
    books[3].nameOfAuthor = "Ivanov A.A.";
    books[3].nameOfBook = "Morning";
    books[3].yearOfPublication = 2002;
 
    books[4].nameOfAuthor = "Sidorov A.A.";
    books[4].nameOfBook = "Day";
    books[4].yearOfPublication = 2002;
 
    cout << "Author of books, which were written in 2002:" << '\n';
    for (int i = 0; i < 5; i++)
    {
        if (books[i].yearOfPublication == 2002)
        {
            cout << books[i].nameOfAuthor << '\n';
        }
    }
 
    cout << "Books, which were written by Petrov A.A:" << '\n';
    for (int i = 0; i < 5; i++)
    {
        if (books[i].nameOfAuthor == "Petrov A.A.")
        {
            cout << books[i].nameOfBook << '\n';
        }
    }
    
    return 0;
}

#include "stdio.h"
#include "stdlib.h"
int cnt_values(int * arr, int len)
{
        int cnt_val = 1;
        for (int i = 1; i < len; ++i)
                if (arr[i] != arr[i - 1]) ++cnt_val;
        return cnt_val;
}
int main(int argc, char* argv[])
{
        const int cnt = 20;
        int arr[cnt];
        arr[0] = 100;
        for (int i = 1; i < cnt; ++i)
                arr[i] = arr[i - 1] - rand() % 3;
 
        for (int i = 0; i < cnt; ++i)
                printf("%i  ",arr[i]);
        printf("\nCount: %i",cnt_values(arr, cnt));
        getchar();
        return 0;
}