插入排序 C语言实现

#include

void insertsort(int* arr,int length)
{
    if(arr == NULL || length < 0)
        return;

    for(int i = 1; i < length; i++)
    {
        for(int j = i; j > 0; j--)
        {
            if(arr[j-1] > arr[j])
            {
                int temp = arr[j-1];
                arr[j-1] = arr[j];
                arr[j] = temp;
            }
        }
    }
}

int main()
{
    int arr[] = {42,1,12,4,44,32};
    int nLength = sizeof(arr)/sizeof(arr[0]);
    insertsort(arr,nLength);

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

    return 0;
}