lab3_3

#include <iostream>
#include <fstream>

using namespace std;

int takeСhoise(int MIN, int MAX) {
    const string error = "Проверьте корректность введнных данных!\n";
    bool isIncorrect;
    int num;
    do {
        isIncorrect = false;
        cin >> num;
        if (cin.fail()) {
            isIncorrect = true;
            cout << error;
            cin.clear();
            while (cin.get() != '\n');
        }
        if (!isIncorrect && cin.get() != '\n') {
            cin.clear();
            while (cin.get() != '\n');
            cout << error;
            isIncorrect = true;
        }
        if (!isIncorrect && (num < MIN || num > MAX)) {
            isIncorrect = true;
            cout << error;
        }
    } while (isIncorrect);
    return num;
}

int* takeAmount(int& n) {
    cout << "Пожалуйста, введите количество чисел в массиве\n";
    n = takeСhoise(0, INT_MAX);
    int* sequence = new int[n];
    return sequence;
}


void takeNums(int* sequence, int n) {
    cout << "Введите числа\n";
    for (int i = 0; i < n; i++) {
        sequence[i] = takeСhoise(1, INT_MAX);
    }
}

int* findFrequency(int* sequence, int n) {
    int* frequency = new int[n];
    for (int i = 0; i < n; i++) {
        frequency[i] = 0;
    }
    for (int i = 0; i < n; i++) {
        int k = sequence[i];
        for (int j = 0; j < n; j++) {
            if (k == sequence[j]) {
                frequency[i]++;
            }
        }
    }
    return frequency;
}

void sortArray(int* frequency, int n, int*& sequence) {
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++) {
            if (frequency[i] < frequency[j]) {
                int swap = frequency[i];
                frequency[i] = frequency[j];
                frequency[j] = swap;
                swap = sequence[i];
                sequence[i] = sequence[j];
                sequence[j] = swap;
            }
        }
    }
}

string wayToFile() {
    fstream checkFile;
    string way;
    bool isIncorrect;
    do {
        isIncorrect = false;
        cout << "Введите путь к файлу\n";
        cin >> way;
        checkFile.open(way);
        if (!checkFile.is_open()) {
            cout << "Проверьте правильность и нахождение вашего файла по заданному пути\n";
            isIncorrect = true;
            checkFile.close();
        }
        else {
            isIncorrect = false;
        }
        if(!isIncorrect)
            checkFile.close();
    } while (isIncorrect);
    return way;
}

int* takeAmountFromFile(int& n) {
    fstream outFile;
    bool isIncorrect;
    do {
        isIncorrect = false;
        string name = wayToFile();
        outFile.open(name);
        if (!outFile.bad()) {
            outFile >> n;
            if (n < 0 || n > INT_MAX || n == 0) {
                cout << "Ошибка. Проверьте содержание файла\n";
                isIncorrect = true;
                outFile.close();
            }

        }
    } while (isIncorrect);
    int* sequence = new int[n];
    return sequence;
}

void takeNumsFromFile(int* sequence, int n) {
    fstream outFile;
    bool isIncorrect;
    do {
        isIncorrect = false;
        string name = wayToFile();
        outFile.open(name);
        if (!outFile.bad()) {
            outFile >> n;
            for (int i = 0; i < n; i++ && !isIncorrect) {
                outFile >> sequence[i];
                if (sequence[i] < 1 || sequence[i] > INT_MAX) {
                    cout << "Ошибка. Проверьте содержание файла";
                    isIncorrect = true;
                }
            }
            outFile.close();
        }
    } while (isIncorrect);
}

int* choiseEnter(int& n) {
    int choise;
    int* sequence{};
    cout << "Выберете способ ввода. \n 1. Введите 1 для использования консоли. \n 2. Введите 0 для использования файла.\n";
    choise = takeСhoise(0, 1);
    if (choise == 1) {
        sequence = takeAmount(n);
        takeNums(sequence, n);

    }
    else {
        sequence = takeAmountFromFile(n);
        takeNumsFromFile(sequence, n);
    }
    int* chastota = findFrequency(sequence, n);
    sortArray(chastota, n, sequence);
    return sequence;
}


void resultInConsole(int* sequence, int n) {
    cout << "Отсортированный массив: ";
    for (int i = 0; i < n; i++) {
        cout << sequence[i] << " ";
    }
}

void resultInFile(string name, int* sequence, int n) {
    fstream inFile;
    inFile.open(name);
    if (!inFile.bad()) {
        for (int i = 0; i < n; i++) {
            inFile << sequence[i] << " ";
        }
    }
    inFile.close();
}

void choiseExit(int* sequence, int n) {
    int choise;
    cout << "Выберете способ вывода результата. \n 1. Введите 1 для использования консоли. \n 2. Введите 0 для использования файла.\n";
    choise = takeСhoise(0, 1);
    if (choise == 1) {
        resultInConsole(sequence, n);
    }
    else {
        string name = wayToFile();
        resultInFile(name, sequence, n);
    }
}

int main()
{
    setlocale(LC_ALL, "Rus");
    int n;
    int* sequence = choiseEnter(n);
    choiseExit(sequence, n);
}