Sequential to dimensional indices conversion

IndicesConversion.cs

        // conversion between dimensional indices for a multidimensional or jagged array to sequential index
        // and vice-versa
        
        // 2D array (nX, nY) created as [i,j] or jagged array indexed as [i][j]
        // array created with nested for loops, i (nX), then j (nY) (outmost to innermost)
        
        private int GetSequentialIndex(int i, int j, int nY) => i * nY + j;

        private int[] GetDimensionalIndices(int index, int nY)
        {
            int[] dimIndices = new int[2];

            dimIndices[0] = index / nY;
            dimIndices[1] = index % nY;

            return dimIndices;
        }
        
        // 3D array (nX, nY, nZ) created as [i,j,k] or jagged array indexed as [i][j][k]
        // array created with nested for loops, i (nX), then j (nY), then k (nZ) (outmost to innermost)
        
        private int GetSequentialIndex(int i, int j, int k, int nY, int nZ) => i * (nY * nZ) + j * nZ + k;

        private int[] GetDimensionalIndices(int index, int nY, int nZ)
        {
            int[] dimIndices = new int[3];

            dimIndices[0] = index / (nY * nZ);
            dimIndices[1] = (index % (nY * nZ)) / nZ;
            dimIndices[2] = index % (nZ);

            return dimIndices;
        }