3维数组初始化及内存释放

// Initilize a 3D array
void initialize_3DArray(double*** arr, int x, int y, int z)
{
arr = new double**[z];
for(int i=0;i<x;i++)
{
arr[i] = new double*[x];
for(int ii=0;ii<y;ii++)
{
arr[i][ii] = new double[y];
for(int iii=0;iii<y;iii++)
{
arr[i][ii][iii] = (double)rand() / RAND_MAX;
}
}
}
}