Hello party people! 🙂 Today I was wondering whether I have forgotten to code in Python after 4 weeks of coding marathon in VBA and I have decided to try a small portion of the weekly challenge from CodeForces! So, the …
Python – Algorithm from CodeForces – Bears and Blocks Read more »
In the current article I will try to solve a problem for calculation of average distance with Dijkstra, given in codeforces.com contest here in pdf. What is the problem like? We have n weighted graphs like this: For each given graph, …
Python – Algorithm – Calculate Average distance with Dijkstra Read more »
Sometimes complicated algorithms are really easy to be written down. The current problem is solved in 6 lines of code (from line 5 to line 11), but it you need to put effort to understand how the algorithm works and what are …
Python Algorithms – Maximum combinations of coins Read more »
Yesterday I have spent some hours, trying to resolve one problem for shortest paths. The problem was coming from HackBulgaria and was somehow similar to these two problems here: Get the shortest path in a weighted graph with Dijkstra Dijkstra for …
Python Algorithms – Full Dijkstra is stunning again Read more »
Today, I will take a look at a problem, similar to the one here. In the article there, I produced a matrix, calculating the cheapest plane tickets between any two airports given. Today, the task is a little different. I would …
Python – Get the shortest path in a weighted graph – Dijkstra Read more »
Today I was looking into the following problem for word counter in python from Hack Bulgaria: You are given a rectangular table filled with characters and a word. Your task is to count the occurrences of the word in the …
Python – Calculating words in matrix – contest problem Read more »
In this article I will present the solution of a problem for finding the shortest path on a weighted graph, using the Dijkstra algorithm for all nodes. The problem is formulated by HackBulgaria here. Pretty much, you are given a …
Yesterday, I have decided to make an account in codeforeces.com and to check how the system works. Pretty much quite well, in 90 minutes I have managed to solve 2 of the 5 problems: I have decided to stop, because for …
After the article here, concerning the building of the binary trees and their usefulness, today I will show how to use these trees in action 🙂 Imagine that we have the following problem, used in arena.hackbulgaria.com: Implement a program in …
Python – Usage of a Binary Tree with List in Python Read more »
Yesterday, I have started to solve problems from a challenging Russian site for programming competitions. Today, I have decided to spend about 30 minutes on another problem, which seemed easy, but I am already spending hours on it, without being able …
Python – Algorithm Challenge – First Day At School Read more »
About 3 weeks ago, I have enlisted myself in some course for algorithms. There, one of the guys mentioned a web site for web contests and I have decided to take a look. The site is called Timus.ru and the …
Today, after playing some interesting board games, I was wondering about some probabilities with dice. As far as I did not want to calculate them with statistics methods (and it is always funnier to make a simulation), I have …
Python – Times the dice is same as previous or next Read more »
How did it all start? When I was a student at the University of Sofia, I had to translate about 100 pages of the Greek Military Codex, which was quite an unpleasant task (if someone claims the opposite – run away from …
This month I have finished with my Python course in HackBulgaria, thus I have decided to continue with a course, called Algorithms. The course had a requirement of three tasks, which should be resolved in a reasonable time. The first one …
So, some time ago I have started to create apps in Django with Python. It is really fun and amazing, what one can achieve with this package 🙂 E.g., I have generated a small app, counting words and analyzing their repeatability, …
Python Django – How to add css to django application Read more »
Sending e-mail through the internet is quite a trivial trick in many programming languages. Some time ago, I have shown how to send MS Excel range as an e-mail and how to send a mail through VBA, with HTML. As far …
Some time ago, I have built something like a primitive SQL language for C# here. Today, I have worked on a similar task, checking the powers of Sqlite3 with Python. This time it was not that primitive and the results were better …
Have you ever wondered on what servers the top 50 most visited Bulgarian sites run? That is definitely an interesting question, if you are Bulgarian IT admin and you have pretty much free time 🙂 Anyway, as far as I am …
Python – Crawling the top 50 sites from Bulgaria for their servers Read more »
Who follows you? Who follows your followers? And who follows the followers of your followers? And what about the next level? These are pretty interesting question actually. With easy answers, if you are interested only in GitHub. The GitHub team have provided …
Some time ago, like a year or so, I have written an article for ABC analysis for linguists for C#. Today, I have decided to do it for Python, just for fun and to check whether the 80/20 rule is valid. …
initially, the idea of the article was to write four lines of code, doing the following 2 tasks: uploading data to a given file getting JSON data from file and using it in an application However, as soon as I started, I …
Python – Add data to external files and get JSON data from files Read more »
Python’s lists are powerful. Especially, if you come from the VBA world its like switching to a new car after years of using the old red Ikarus. Thus, I have decided to write a small article about them, just to be …
Python – A little bit about lists and operations with them Read more »
If you want to build a magic square, check this article, the python code is at the bottom – How to build a magic square A magic square is an arrangement of the numbers from 1 to N^2 (N-squared) in …
Some time ago I have started to learn Python. Today, I will present a way to solve the problem “Reduce file path”. The problem is the following – you are given a string and you should reduce it to a meaningful …
Python – Reduce file path problem (with string slicing and list comprehension) Read more »
This week I have started to study Python a little more into detail in the courses of HackBulgaria. After end of the second day, the last problem was considered worthy for blogging, as far as it took me about an …
In the current article, I will present a few useful commands, for the Linux(Ubuntu) terminal. The article is going to be updated constatly with new entries:) Here they come: General Python Related Java Script and Git related
This weekend I have managed to finish the online version of the book “The Python Workbook”, kindly provided to me by Springer. The book provides you with 174 exercises, which can make you an advanced beginner (if this term exists) …