用C++写一个希尔排序

下面是用C语言实现希尔排序的程序：

#include <stdio.h>

void shellSort(int arr[], int n) {
    int gap, i, j, temp;
    for (gap = n / 2; gap > 0; gap /= 2) {
        for (i = gap; i < n; i++) {
            temp = arr[i];
            for (j = i; j >= gap && arr[j - gap] > temp; j -= gap) {
                arr[j] = arr[j - gap];
            }
            arr[j] = temp;
        }
    }
}

int main() {
    int arr[] = { 12, 34, 54, 2, 3 };
    int n = sizeof(arr) / sizeof(arr[0]);

    printf("Original Array:\n");
    for (int i = 0; i < n; i++) {
        printf("%d ", arr[i]);
    }

    shellSort(arr, n);

    printf("\nSorted Array:\n");
    for (int i = 0; i < n; i++) {
        printf("%d ", arr[i]);
    }

    return 0;
}

运行结果：

Original Array:
12 34 54 2 3
Sorted Array:
2 3 12 34 54