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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

# Algorithms beginning with D

- date_difference [edit] v0.2
*Compute the difference in weeks, days, hours, minutes and seconds between two dates.* - decode_phpstring [edit] v0.1
*Decode a string which may contain PHP octal or hexidecimal notation to represent ASCII characters. Octal notation is of the form \NNN where NNN is a 3-digit octal number. Hexidecimal notation is of the form \xMM where MM is a 2-digit hex number.* - degtorad [edit] v0.1
*Returns degrees converted to radians.* - derivative [edit] v0.3
*Take the derivative of a function.* - diceRoll [edit] v0.2
*Rolls a number of dice and returns the results of each roll as well as the total.* - distance_on_earth [edit] v0.1
*Uses the spherical law of cosines to calculate the distance (in km) between 2 points on the earth.* - draw_bezier [edit] v0.1
*Draw a Bezier curve specified by the four points p0, p1, p2, p3.* - draw_cube [edit] v0.8
*Draw a 3d cube.* - draw_mandelbrot [edit] v0.1
*Draw the Mandelbrot set fractal. See http://en.wikipedia.org/wiki/Mandelbrot_set* - draw_playing_card [edit] v0.1
*Use CSS to draw a playing card - no images are used.* - draw_pyramid [edit] v0.2
*Draw a 3d pyramid.* - draw_quick_sphere [edit] v0.3
*Draw an approximation of a sphere with a single light source. This algorithm merely draws a series of ellipses to approximate the shading in the sphere.* - draw_sierpinski [edit] v0.5
*Draw a Sierpinski fractal triangle.* - draw_sphere [edit] v0.3
*Render a 3d sphere.* - draw_triangle [edit] v0.4
*Draw a filled triangle.* - draw_upc_barcode [edit] v0.3
*Draw a barcode for a UPC number.* - duotone_image [edit] v0.5
*Change an image into a tinted grayscale.*