Function pushFront

Source/ThirdParty/recastnavigation/RecastMesh.cpp:550–555

static void pushFront(int v, int* arr, int& an)
{
	an++;
	for (int i = an-1; i > 0; --i) arr[i] = arr[i-1];
	arr[0] = v;
}

static void pushBack(int v, int* arr, int& an)
{