C语言对含有10个元素的一维数组使用选择排序法分别按升序和降序排序

以下是对含有10个元素的一维数组使用选择排序法分别按升序和降序排序的C语言代码：

#include <stdio.h>

void selectionSortAsc(int arr[], int n) {
    int i, j, min_idx;
    for (i = 0; i < n - 1; i++) {
        min_idx = i;
        for (j = i + 1; j < n; j++)
            if (arr[j] < arr[min_idx])
                min_idx = j;
        int temp = arr[min_idx];
        arr[min_idx] = arr[i];
        arr[i] = temp;
    }
}

void selectionSortDesc(int arr[], int n) {
    int i, j, max_idx;
    for (i = 0; i < n - 1; i++) {
        max_idx = i;
        for (j = i + 1; j < n; j++)
            if (arr[j] > arr[max_idx])
                max_idx = j;
        int temp = arr[max_idx];
        arr[max_idx] = arr[i];
        arr[i] = temp;
    }
}

int main() {
    int arr[10] = {9, 2, 8, 4, 5, 7, 1, 3, 10, 6};
    int i;

    printf("Original array: ");
    for (i = 0; i < 10; i++)
        printf("%d ", arr[i]);

    selectionSortAsc(arr, 10);
    printf("\nArray sorted in ascending order: ");
    for (i = 0; i < 10; i++)
        printf("%d ", arr[i]);

    selectionSortDesc(arr, 10);
    printf("\nArray sorted in descending order: ");
    for (i = 0; i < 10; i++)
        printf("%d ", arr[i]);

    return 0;
}

输出结果为：

Original array: 9 2 8 4 5 7 1 3 10 6 
Array sorted in ascending order: 1 2 3 4 5 6 7 8 9 10 
Array sorted in descending order: 10 9 8 7 6 5 4 3 2 1