Strings_arrays

#include <iostream>
#include <string.h>
using namespace std;



char* StringCopy(char* s)
{
    char* Str = 0;
    int len = 0;
    for (int i = 0; s[i]; i++){
        len++;
    }

    len++;
    Str = new char [len];
    for (int i = 0; i<len; i++)
        Str[i] = s[i];
    return Str;
};





char* StringRename(char* s)
{
    char* Str = 0;
    int len =0, counter1 = 0, counter2 = 0, counter3 = 0;
    for (int i=0;s[i];i++)
    {
        if (s[i]=='1')
            counter1++;
        if (s[i]=='2')
            counter2++;
        if (s[i]=='3')
            counter3++;
    }
    int lenght=strlen(s)+counter1*2+counter2*2+counter3*4;

    int j = 0;
    int lenString = strlen(s);
    Str = new char [lenght+1];
    for (int i = 0; i<lenString; i++)
    {
        switch (s[i])
        {
        case '1':
            Str[j] = 'O';
            Str[j+1] = 'n';
            Str[j+2] = 'e';
            j+=2;
            break;
        case '2':
            Str[j] = 'T';
            Str[j+1] = 'w';
            Str[j+2] = 'o';
            j+=2;
            break;
        case '3':
            Str[j] = 'T';
            Str[j+1] = 'h';
            Str[j+2] = 'r';
            Str[j+3] = 'e';
            Str[j+4] = 'e';
            j+=4;
            break;
        default:
            Str[j] = s[i];
            break;
        }
        j++;
    }
    Str[lenght]=0;
    return Str;
}


bool SearchWord(char* s,int& bLet,int& FirstIndex,int& LastIndex)
{

    for (;s[bLet]; bLet++)
    {
        if (!(s[bLet]==' '))
        {
            FirstIndex=bLet;
            break;
        }
    }

    if (!s[bLet]){  return false;}
    for (;s[bLet];bLet++)
    {
        if (s[bLet]==' ')
            break;
    }
LastIndex=bLet;
return true;
}

char* WordsSwap(char* s)
{
    char* Str = 0;
    int length=strlen(s);
    int beginLetter = 0;
    int fwb = 0;
    int fwe = 0;
    if(!SearchWord(s,beginLetter, fwb, fwe)) {
        cout << "нет первого слова";
        return s;
    }

    int lwb = 0;
    int lwe = 0;
    while (SearchWord(s,beginLetter,lwb,lwe)){}


    if (!lwb) {return s;}

char* newStr = new char [length];

    int count=0;
    int lwbcount=lwb;
    int fwecount=fwe;
    int lwecount=lwe;
    int fwbcount=fwb;

    for (int i=0;i<fwb;i++){
        newStr[count]=s[i];
        count++;
    }

    for (lwb;lwbcount<lwe;lwbcount++){
        newStr[count]=s[lwbcount];
        count++;
    }

    for (fwe;fwecount<lwb;fwecount++){
        newStr[count]=s[fwecount];
        count++;
    }

    for (fwb;fwbcount<fwe;fwbcount++){
        newStr[count]=s[fwbcount];
        count++;
    }


    for (lwe;lwecount<length;lwecount++){
        newStr[count]=s[lwecount];
        count++;
    }
    newStr[count]=0;
return newStr;

}

void NumberOfLatinSymbolsIncluded(char* s)
{
    int i = 0;

    int A [26];
    for(int i = 0; i<26; i++)
    {
        A[i]=0;
    }

    while (s[i])
    {   if ((s[i]>='A') && (s[i]<='Z'))
        A[s[i]-'A']++;
    else if ((s[i]>='a') && (s[i]<='z')
        {A[s[i]-'a']++;}

        i++;

    }
    for(int j = 0; j<26; j++)
    {
        cout << A[j] << " ";
    }
}

char* DeleteEachSecondSymbolInString(char *s)
{
    char* Str = 0;
    int lenght = 0;
    lenght = (strlen(s)+(strlen(s)%2==0 ? 0 : 1))/2;
    Str = new char [lenght+1];
    int j = 0;
    for (int i = 0; i<strlen(s); i+=2)
    {
        Str[j] = s[i];
        j++;
    }
    Str[lenght] = 0;
    return Str;
}

char** ArrayChange(char** mas, int M)
{
    char** table = 0;
    table = new char* [M];
    for (int i = 0; i<M; i++)
    {
        int j = 0;
        int len = strlen(mas[i]);
        for (j; mas[i][j]; j++)
            if (mas[i][j]==' ')
                break;
        table[i] = new char [j+7];
        table[i][0] = mas[i][j+1];
        table[i][1] = '.';
        table[i][2] = ' ';
        int k ;
        for (k = j+1; mas[i][j]; k++)
            if (mas[i][k]==' ')
                break;
        table[i][3] = mas[i][k+1];
        table[i][4] = '.';
        table[i][5] = ' ';
        for (int q = 0; q<j; q++)
            table[i][q+6] = mas[i][q];
        //table[i][j+6] = ';';
        table[i][j+6] = 0;

    }
    return table;
}

int* ArrayContainAllEvenNumbers(int* mas, int size, int &cnr)
{
    cnr = 0;
    int *res = 0;
    for (int i = 0; i<size; i++)
        if (mas[i]%2==0)
            cnr++;
    res = new int [cnr];
    int j = 0;
    for (int i = 0; i<size; i++)
    {
        if (mas[i]%2==0)
        {
            res[j] = mas[i];
            j++;
        }
    }
    return res;
}

// -1163005939
int AllSymbolsTakenOneTime(int*p,int B)
{
        int length=B;
        int*mas_simv=new int[length];
        int symbol;
        bool flag;
        int j=0;


        for (int i=0;i<length;i++)
        {
                symbol=p[i];
                flag=false;
                for (int k=0; k<j;k++) {

                        if (mas_simv[k]==symbol)
                            flag=true;
                }

                if (flag==false)
                {
                        mas_simv[j]=p[i];
                        j++;
                }
        }
        for(int i=0;i<j;i++)
                        cout<<mas_simv[i]<<" ";
        delete[] mas_simv;
return 0;
}






int main(){
    char* MyString = 0;
    char* NewStr = 0;
    const int N= 100;
    char string[N];
//  cout << "Enter the string:" << endl;
//  cin.getline(string, N);

    /*MyString = StringCopy(string);
    cout << MyString << endl;

    NewStr = StringRename(MyString);
    cout << NewStr << endl;
*/
    //NewStr = WordsSwap(string);
//  cout << NewStr << endl;

//  NumberOfLatinSymbolsIncluded(string);
/*
cout << DeleteEachSecondSymbolInString(string) << endl;
*/
/*
    int M = 0;
    char ** mas = 0;
    cout << "How many students will be?" << endl;
    cin >> M;
    cin.ignore(256,'\n');
    cout << "Enter F.I.O of these students:" << endl;
    mas = new char* [M];
    for (int i = 0; i<M; i++)
    {
        cin.getline(string, N);
        mas[i] = StringCopy(string);
    }
    mas = ArrayChange(mas, M);
    for (int i = 0; i<M; i++)
    {
        cout << mas[i] << endl;
    }
    */
/*
        int size = 0, cnr=0;
    cout << "How many elements will be?" << endl;
    cin >> size;
    int* massiv = 0;
    massiv = new int [size];
    cout << "Inpunt string of " << size << " numbers." << endl;
    for (int i = 0; i<size; i++)
        cin >> massiv[i];
    int* NewMas = 0;
    NewMas = ArrayContainAllEvenNumbers(massiv, size, cnr);
    if (cnr==0) cout << "There are no even numbers." << endl;
    else
    {
        cout << "Array of all even numbers: ";
        for (int i = 0; i<cnr; i++)
            cout << NewMas[i] << "  ";
        cout << endl;
    }
    cnr=0;
*/

       int B;
        cout<<"Put the number of elements"<<endl;
        cin>>B;
        int *p=0;
        p=new int[B];
        for (int i=0;i<B;i++)cin>>p[i];
        AllSymbolsTakenOneTime(p,B);



    system("pause");

}