Nugroho's blog.

I post the full source code below   unit Unit1; interface uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, F...

I have a question from a new friend on my instagram Basically, he needs only certain substring. Here's my code to parse the stri...

Here's my first kivy program after a while.

I change the font in memo (tMemo) into courier. With this change, it's easy to do string manipulation with old Pascal style. Below, I...

This simple program is using an edit as input, a button to trigger processing and a memo for output. I used edit.text as s value and then...

This code moves the star from cell to cell on string grid. I use variable s, an array of string type variable. For delay, or controlling...

A digit word is a word where, after possibly removing some letters, you are left with one of the single digits: ONE, TWO, THREE, FOUR, FIVE...

Suppossed we want to animate our plot, say f(x) = (x-c)^(2) to see the effect of various c value, we could do it in Python using Matplotlib ...

Yeah, what about it? The previous code have the both end bounded . If we want a free/unbound end, we could set the condition at the with ...

I use matplotlib module to do the animation. The main code is in def waves(y0,y1,cb) that use finite difference that solved initial value ...

Yeah, it's basically Gauss elimination (or we could call it Gauss Naif :) ) but with slight modification at the end. So, instead ...

After do this in Python , now it's time to bring it back to Delphi, where all of this is started, :) The heart of code lay on this ...

Okay, we've done the manual one , how about automatize it? It's actually just a matter of finding the pattern on that code  and af...

What if we didn't do back substitution on Gauss Naif method but eliminate the rest instead? Nah, we get the Gauss Jordan here. The i...

How about some manual matrix using manual Gauss just like always, but in Python? Okay, here it is. I use tuple, I think it's just the ...

Maybe that's something come to our mind when we read this code . Yeah, that's forward dfference. It's designed to get the diffe...

This Python code only works with function that crossing x-axis. The idea is we started from x=0 and walking to the positive direction and ...

I use this code in order to find its pattern. Yes, there is many Gauss code out there. I plan to write it on next post about it. The dynam...

It's a whole a lot easier than Newton's divided differences interpolation polynomial , because there is no divided difference part...

We may already knew that on computational physic,  differentiation is used in Euler method to compute integration, or used in finite differe...