Приложения разработчика Jake Baker в Android Market

Prime Factor Finder (v. 2.12)

Jake Baker опубликовал приложение 2012-11-02
(обновлено 2012-11-02)

A fast, flexible and powerful prime factorization app!  Integers of up to 14 digits will be factorized very quickly (try 81000198000121 for example, or a strong pseudoprime such as 10000130243671).  Integers of up to 20 digits are factorized within a few seconds in most cases.

The app uses Pollard's Rho algorithm to find factors of large integers, in combination with trial division optimized for speed when possible by interpreting sub-factors as long integers.

A menu button allows factorization calculations to be extended for faster devices.  Pollard's Rho calculations are iterated more times when the depth in increased, which results in factorizing 'harder' numbers, but takes longer.  The depth can also be reduced.

The app will accept arbitrarily large integers, and will find the prime factors of powers of 10 or other numbers with small factors very quickly.

Integers with prime factors of seven or more digits will take longer to factorize, depending on the device the app is running on.

Progress is shown by listing factors as they are found.  If a sub-factor which is known to be non-prime is taking a long time to factorize, the display will show "working ...".  Calculation can be cancelled by pressing the back button on the device.  However, if the app cannot find all the factors, it will terminate and list any factors it has found, rather than hanging or freezing.

Mandelbrot Set Generator (v. 1.12)

Jake Baker опубликовал приложение 2012-07-14
(обновлено 2012-07-14)

Easy to use Mandelbrot Set Generator.  Simply touch the screen to zoom.  Specify the resolution and maximum iteration limit on the initial screen.  Note, this app currently zooms in on the point at which the screen is touched.  It does not support pinch-zoom, or touch and dragging.  These are features which will be implemented soon.

Zooms can be individually set to higher iteration limit using the menu.  An iteration limit of 500 is okay for initial exploration of the Mandelbrot Set.  For some zooms a higher limit will be needed; for example the smaller 'copies' of the Mandelbrot Set may be blobby unless the iteration limit is increased.

Use the options menu to try different colour schemes - your zoom will change to the new scheme without resetting the zooming process.

The Mandelbrot Set is a fractal generated by a simple rule.  The patterns which result are extraordinarily detailed, with fascinating symmetries and recurring shapes.

This app allows the user to zoom in on any region repeatedly.  The default settings allow fairly fast processing even on a low-end phone.  Users with devices with faster processors can change the settings, resulting in sharper images.  The menu button also provides an option for increasing the iteration limit of an existing zoom, so that even on slower devices a user can quickly zoom in to a desired area, and the view that area in more detail.

Colour schemes can be changed at any stage, without affecting the current zoom or iteration depth.  This allows exploration of detail, and makes it easier for the user to find zooms which show aspects of the Mandelbrot set more clearly.

Images can be saved to the device's storage, or shared using email, text messaging or other sharing applications.

Hundreds of millions of calculations may be necessary for a sharp image of parts of the Mandelbrot Set, and some zooms may slow your device.