Refactor the following code to modern [Тут напиши стандарт] programming standards:

[Сюда вставь свой код]

Refactor the following code to modern c++23 programming standards:

int* createIntArray(int size) {
    int* arr = new int[size];
    for (int i = 0; i < size; ++i) {
        arr[i] = i * i;
    }
    return arr; 
}

#include <memory>
#include <vector>
#include <algorithm>

// Option 1: Return a std::vector (recommended for most cases)
auto createIntArray(int size) -> std::vector<int> {
    std::vector<int> arr(size);
    std::ranges::generate(arr, [i = 0]() mutable { return i * i++; });
    return arr;
}

// Option 2: Return a std::unique_ptr (if you specifically need heap allocation)
auto createIntArrayUnique(int size) -> std::unique_ptr<int[]> {
    auto arr = std::make_unique<int[]>(size);
    for (int i = 0; i < size; ++i) {
        arr[i] = i * i;
    }
    return arr;
}

// ❌ Старый подход без концептов
template<typename T>
T max_value(const std::vector<T>& values) {
    // Ошибка будет обнаружена только при инстанциации шаблона
    return *std::max_element(values.begin(), values.end());
}

// ✅ Современный подход с концептами
template<typename T>
requires std::totally_ordered<T>
T max_value(const std::vector<T>& values) {
    return *std::max_element(values.begin(), values.end());
}

// Еще короче с auto
auto max_value(const std::vector<std::totally_ordered auto>& values) {
    return *std::max_element(values.begin(), values.end());
}

# Через vcpkg
vcpkg install gtest

# Через conan
conan install gtest/1.16.0

# Сборка из исходников
git clone https://github.com/google/googletest.git
cd googletest
mkdir build && cd build
cmake ..
cmake --build .

// Базовый тест
#include <gtest/gtest.h>

TEST(StringTest, StringEquality) {
    std::string actual = "Hello";
    actual += " World";
    EXPECT_EQ(actual, "Hello World");
}

int main(int argc, char **argv) {
    ::testing::InitGoogleTest(&argc, argv);
    return RUN_ALL_TESTS();
}

class MathTest : public ::testing::TestWithParam<std::tuple<int, int, int>> {};

TEST_P(MathTest, Addition) {
    int a = std::get<0>(GetParam());
    int b = std::get<1>(GetParam());
    int expected = std::get<2>(GetParam());
    EXPECT_EQ(a + b, expected);
}

INSTANTIATE_TEST_SUITE_P(
    AdditionTests,
    MathTest,
    ::testing::Values(
        std::make_tuple(1, 1, 2),
        std::make_tuple(5, 3, 8),
        std::make_tuple(-1, 1, 0)
    )
);