The Stack Data Structure in Python

The stack is a wonderfully simple data structure which despite its simplicity makes many powerful algorithms possible. Some of the uses for a stack data structure in software development are: The Depth-First...

Python programming integers are immutable

Python Programming – List Mutation

A Surprising Feature of Python Lists What do you expect the output of the following Python code to be? def mutate_or_not(a_list): a_list[0] = "I've changed" my_list = [1, 2, 3] mutate_or_not(my_list) print(my_list)...

Python Programming Two Sum Interview Problem

This article is about a classic challenge that is often given in Python coding interviews. There are several different approaches you could take, but the aim is to come up with a...

Python Programming Challenge – Maximum Value in List

Here’s a python programming challenge for you to help you develop your problem solving and algorithmic thinking skills. Find the position of the maximum value in a Python list of integers. Some...

Python Memoization

Improving the efficiency of Python Programs Using Memoization Some of you may be familiar with the Fibonacci sequence, which is famous in both mathematics and computer programming. The sequence is formed by...

2-Dimensional Lists in Python

2-dimensional lists are an extremely important data structure in Python programming, with many applications. They can be very confusing to begin with, and you should make sure you are confident and competent...

Python append() and extend() List Methods

In this article we are going to take a look at two important Python list methods – append() and extend(). Both are very useful, but each serves a different purpose. Python List...

Python Programming Challenge – Intervals of Consecutive Characters

Python Programming Challenge – Intervals of Consecutive Characters Here’s a fun Python programming challenge: Write a function which takes a string as input and returns a list of tuples containing the start...

A Key Distinction for Better Understanding of Computer Science GCSE and A Level

Do you mean the thing or the container for the thing? In this article I want to discuss a key distinction which crops up again and again throughout Computer Science GCSE and...

Learning Bubble Sort for Computer Science GCSE and A Level

They say a picture is worth a thousand words, and that is probably true, IF you are ready to understand the picture! When this is the case, we often experience those wonderful...

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