c++实现选择排序算法

选择排序算法的C语言实现如下：

#include <iostream>
using namespace std;

void sort(int *arr, int length) {
    int index;
    int temp;
    for (int i = 0; i < length - 1; i++) {
        index = i;
        for (int j = i + 1; j < length; j++) {
            if (arr[j] < arr[index])
                index = j;
        }
        if (arr[index] < arr[i]) {
            temp = arr[i];
            arr[i] = arr[index];
            arr[index] = temp;
        }
    }
}

int main() {
    int arr[] = {12, 12, 54, 1745, 45, 45, 469, 789, 789};
    int length = sizeof(arr) / sizeof(arr[0]);
    sort(arr, length);
    for (size_t i = 0; i < length; i++)
        cout << arr[i] << " ";
    return 0;
}