Repository: TheAlgorithms/C-Plus-Plus
File: greedy_algorithms/digit_separation.cpp (C++)

Code before:
#include <vector>     /// For std::vector to store separated digits

/**
 * @namespace
 * @brief Greedy Algorithms
 */
namespace greedy_algorithms {

/**
 * @brief A class that provides methods to separate the digits of a large
 * positive number.
 */
class DigitSeparation {
 public:
    /**
     * @brief Default constructor for the DigitSeparation class.
     */
    DigitSeparation() {}

    /**
     * @brief Implementation of digitSeparationReverseOrder method.
     *
     * @param largeNumber The large number to separate digits from.
     * @return A vector of digits in reverse order.
     */
    std::vector<std::int64_t> DigitSeparation::digitSeparationReverseOrder(
        std::int64_t largeNumber) const {
        std::vector<std::int64_t> result;
        if (largeNumber != 0) {
            while (largeNumber != 0) {
                result.push_back(std::abs(largeNumber % 10));
                largeNumber /= 10;
            }
        } else {
            result.push_back(0);
        }
        return result;
    }

    /**
     * @brief Implementation of digitSeparationForwardOrder method.
     *
     * @param largeNumber The large number to separate digits from.
     * @return A vector of digits in forward order.
     */
    std::vector<std::int64_t> DigitSeparation::digitSeparationForwardOrder(
        std::int64_t largeNumber) const {
        std::vector<std::int64_t> result =
            digitSeparationReverseOrder(largeNumber);
        std::reverse(result.begin(), result.end());
        return result;

Review comment (suggestion):
```suggestion
    std::vector<std::int64_t> digitSeparationReverseOrder(
```

Code after:
 * @author [Muhammad Junaid Khalid](https://github.com/mjk22071998)
 */

#include <algorithm>  /// For reveresing the vector
#include <cassert>    /// For assert() function to check for errors
#include <cmath>      /// For abs() function
#include <cstdint>    /// For int64_t data type to handle large numbers
#include <iostream>   /// For input/output operations
#include <vector>     /// For std::vector to store separated digits

/**
 * @namespace
 * @brief Greedy Algorithms
 */
namespace greedy_algorithms {

/**
 * @brief A class that provides methods to separate the digits of a large
 * positive number.
 */
class DigitSeparation {
 public:
    /**
     * @brief Default constructor for the DigitSeparation class.
     */
    DigitSeparation() {}

    /**
     * @brief Implementation of digitSeparationReverseOrder method.
     *
     * @param largeNumber The large number to separate digits from.
     * @return A vector of digits in reverse order.
     */
    std::vector<std::int64_t> digitSeparationReverseOrder(
        std::int64_t largeNumber) const {
        std::vector<std::int64_t> result;
        if (largeNumber != 0) {
            while (largeNumber != 0) {
                result.push_back(std::abs(largeNumber % 10));
                largeNumber /= 10;
            }
        } else {
            result.push_back(0);
        }
        return result;
    }

    /**
     * @brief Implementation of digitSeparationForwardOrder method.
     *
     * @param largeNumber The large number to separate digits from.