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David's Math Pages |
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| David E. Dirkse |
games, puzzles, math articles, freeware and Delphi programming
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Contents
games | |
| Colorstacks | logistic puzzle with 7 levels |
| SHIFT | the most difficult puzzle in the world |
| Jumping Goats | puzzle for all ages |
| Connect4 | single player, 8 levels, board game with analyses |
| Nim | 9 strategic board games, easy to difficult |
| Solitaire | single player puzzles |
| Sudoku Helper - Solver | select the desired amount of help |
math | |
| geometry puzzle | send your solution to be published |
| paint Lissajous curves | Graphics-Explorer makes Lissajous curves move |
| Linear Regression | find the best fitting line through a set of points |
| the Least Squares method | find the best polynomial through a set of points |
| geoproofs | geometric proofs of trigonometric identities |
| geocalc | some calculations in plane geometry |
| p calculation | calculate p using pencil and paper |
| Triangles and Sides | can these lines form a triangle? |
| Calculate square root with pencil and paper | |
| Euclid | solve Ax + By = C |
| the Ultimate Gutter | the best gutter dimensions |
freeware | |
| Prime Number Generator | program + algorithm description + source code |
| Polygon Overlap Calculator | program + algorithm description + source code |
| Graphics-Explorer | Plot, print, explore equations and functions |
| Euclid | solve Ax + By = C |
| ChrCode | show characters and codes |
| Factors | factorize numbers, calculate gcd |
| FontTest | show characters enlarged |
| KeyStroke | show key codes |
| LinEq | solve system of linear equations |
| Numbers | convert number systems |
| Pinwheel | Operate a vintage mechanical calculator |
| Ranks | Calculate the rank of a combination, permutation or partition |
Delphi programming | |
| Drawing | drawing techniques, part 1,2,3,4 |
| Sudoku | programming the Sudoku helper-solver |
| programming techniques(1) | use of the "absolute" (abs) function |
| programming techniques(2) | programming complex loops |
| Colormixer | a simple component for dialog forms |
| Peg-Solitaire puzzle | how to program the search for solutions |
| SHIFT puzzle | how to program the search for solutions |
| freehand drawing | generate and store hand drawn images |
| the Xfont project | create your own font |
| the Xfont class | implementation of the XFont project |
| the Xbitmap class | add many new features to a bitmap |
| a microseconds counter | |
| a simple component for color selection | |
| an arraybutton component | |
| 3D spheres generator | |
ict - algorithms | |
| Exponential Curve Fitting | how Graphics-Explorer builds exponential functions |
| Polygon Triangulation | How to dissect a complex polygon into triangles |
| the direction of a vector | obtain the direction of a line in degrees |
| a Connect4 search algorithm | how the computer calculates the best move |
| bitmap resizing | enlarge or reduce digital images |
| non recursive floodfill | floodfill any shape |
| formula translation | break down a math formula into basic operations |
