NativeSdk Tech Demo

nativeapp.cs

#:sdk NativeSdk@0.5.1

unsafe
{
    const int ArraySize = 10;

    // stackalloc으로 스택에 메모리 할당
    int* arr = stackalloc int[ArraySize];

    // 랜덤 값으로 배열 초기화
    Random rand = new(42);
    Console.WriteLine("Before Sort:");
    for (int i = 0; i < ArraySize; i++)
    {
        arr[i] = rand.Next(1, 100);
        Console.Write($"{arr[i]} ");
    }
    Console.WriteLine();

    // QuickSort 실행
    QuickSort(arr, 0, ArraySize - 1);

    // 정렬 결과 출력
    Console.WriteLine("\nAfter Sort:");
    for (int i = 0; i < ArraySize; i++)
    {
        Console.Write($"{arr[i]} ");
    }
    Console.WriteLine();

    static void QuickSort(int* arr, int left, int right)
    {
        if (left >= right) return;

        int pivotIndex = Partition(arr, left, right);
        QuickSort(arr, left, pivotIndex - 1);
        QuickSort(arr, pivotIndex + 1, right);
    }

    static int Partition(int* arr, int left, int right)
    {
        int pivot = arr[right];
        int i = left - 1;

        for (int j = left; j < right; j++)
        {
            if (arr[j] <= pivot)
            {
                i++;
                (arr[i], arr[j]) = (arr[j], arr[i]);  // 튜플 스왑
            }
        }

        (arr[i + 1], arr[right]) = (arr[right], arr[i + 1]);
        return i + 1;
    }
}