冒泡排序

int arr[] = {2,34,4,55,43,6,7,8,100};
	
	int len = sizeof(arr) / sizeof(arr[0]);
	
	for (int i = 0; i < len; i++)
	{
		for (int k = 0; k < len - 1 -i; k++)
		{
			if (arr[k] > arr[k + 1])
			{
				int temp = arr[k];
				arr[k] = arr[k+1];
				arr[k+1] = temp;
			}
			
		}
	}

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