C/C++库排序方法

void select_sort(int arr[], int length) {
	for (int i = 0; i < length - 1; i++) {
		int min_in = i;
		for (int j = i + 1; j < length; j++) {
			if (arr[j] < arr[min_in]) {
				min_in = j;	
			}
		}
		swap(arr[i], arr[min_in]);
	}
}