Editing Stride of an array (section)

===Example of multidimensional array with non-unit stride===
Non-unit stride is particularly useful for images. It allows for creating subimages without copying the pixel data. Java example:

<syntaxhighlight lang="java">
public class GrayscaleImage {
    private final int width, height, widthStride;
    /** Pixel data. Pixel in single row are always considered contiguous in this example. */
    private final byte[] pixels;
    /** Offset of the first pixel within pixels */
    private final int offset;

    /** Constructor for contiguous data */
    public Image(int width, int height, byte[] pixels) {
        this.width = width;
        this.height = height;
        this.pixels = pixels;
        this.offset = 0;
        this.widthStride = width;
    }

    /** Subsection constructor */
    public Image(int width, int height, byte[] pixels, int offset, int widthStride) {
        this.width = width;
        this.height = height;
        this.pixels = pixels;
        this.offset = offset;
        this.widthStride = widthStride;
    }

    /** Returns a subregion of this Image as a new Image. This and the new image share
        the pixels, so changes to the returned image will be reflected in this image. */
    public Image crop(int x1, int y1, int x2, int y2) {
        return new Image(x2 - x1, y2 - y1, pixels, offset + y1 * widthStride + x1, widthStride);
    }

    /** Returns pixel value at specified coordinate */
    public byte getPixelAt(int x, int y) {
        return pixels[offset + y * widthStride + x];
    }
}
</syntaxhighlight>