Get the Next Small Integer in Python
The challenge Write a function: def solution(A) that, given an array A of N integers, returns the smallest positive integer (greater than 0) that does… Read More »Get the Next Small Integer in Python
Python
Find All Numbers Disappeared in an Array using Python
The challenge Given an array of integers where 1 ≤ a[i] ≤ n (n = size of array), some elements appear twice and others appear once. Find all… Read More »Find All Numbers Disappeared in an Array using Python
HashMaps (aka: Dictionaries) in Python
Introduction Java has a built-in called HashMap. It allows you to store and very quickly retrieve key value pairs. In Python, this is called a… Read More »HashMaps (aka: Dictionaries) in Python
Get The Shortest Path in Binary Matrix using Python
The challenge In an N by N square grid, each cell is either empty (0) or blocked (1). A clear path from top-left to bottom-right has length k if and… Read More »Get The Shortest Path in Binary Matrix using Python
Palindrome Partitioning in Python
The problem Given a string s, partition s such that every substring of the partition is a palindrome. Return all possible palindrome partitioning of s. Example: Input: “aab” Output: [… Read More »Palindrome Partitioning in Python
Best Time to Buy and Sell Stock with Python
The problem Say you have an array prices for which the ith element is the price of a given stock on day i. Design an algorithm to find the maximum… Read More »Best Time to Buy and Sell Stock with Python
Self Dividing Numbers using Python
Introduction A self-dividing number is a number that is divisible by every digit it contains. For example, 128 is a self-dividing number because 128 % 1 == 0, 128… Read More »Self Dividing Numbers using Python
RuntimeError: thread.__init__() not called (Python)
Today I got a really dumb error from Python. RuntimeError: thread.__init__() not called But luckily it’s really easy to fix! Below is the code before… Read More »RuntimeError: thread.__init__() not called (Python)
How to get the UTC Timestamp in Python
All dates in your server applications should be stored in the UTC timezone. This is because you always want to store time without the offset… Read More »How to get the UTC Timestamp in Python
How to make an HTTP Request in AWS Lambda using Python
The requests module for Python is very useful in helping simplify HTTP/s requests from Python, but how would you use it in an AWS Lambda… Read More »How to make an HTTP Request in AWS Lambda using Python
Get the Maximum Length of a Concatenated String with Unique Characters in Python
The problem Given an array of strings arr. String s is a concatenation of a sub-sequence of arr which have unique characters. Return the maximum possible length of s. Example test-cases Example 1: Input:… Read More »Get the Maximum Length of a Concatenated String with Unique Characters in Python
How to get the last element of a list in Python
Let’s say that you have a Python list with the following 5 foods: How do we go about getting the last item? Option 1 It’s… Read More »How to get the last element of a list in Python
How to embed a web server in your Python3 app
This is not the first time that I created a Python3 application that spat out some output and required access to it via an HTTP… Read More »How to embed a web server in your Python3 app
How to duplicate zeros in place using Python
Given a fixed length array arr of integers, duplicate each occurrence of zero, shifting the remaining elements to the right. Note that elements beyond the length of the… Read More »How to duplicate zeros in place using Python
A Quick Introduction to Asyncio in Python3
Python has never been the best at doing multiple things at the same time. While there are ways to mostly resolve this, such as using… Read More »A Quick Introduction to Asyncio in Python3
How to Reorder Data in Log Files using Python
Let’s say that you have an array or a list, or logs. Each of these logs is a space-delimited string of words. For example: logs… Read More »How to Reorder Data in Log Files using Python
How to implement a Queue using Stacks in Python
A common programming interview question, and for a change, one that you will actually be able to use in the job, is that of implementing… Read More »How to implement a Queue using Stacks in Python
Find positions of largest groups of characters in a String with Python
The question Take a string S of lowercase letters. These letters form consecutive groupings of like characters. Find groups with 3 or more like characters… Read More »Find positions of largest groups of characters in a String with Python
How to Measure Execution Time in Google Colab
Google Colab is a fantastic environment to write Python code using Jupyter Notebooks, hosted for free by Google. If you’ve ever used Jupyter Notebooks before,… Read More »How to Measure Execution Time in Google Colab
How to fake a User Agent in Python
A User-Agent is a bunch of text that is sent with every HTTP and HTTPS request. The server processing this request is able to determine… Read More »How to fake a User Agent in Python
Read the bottom n lines of a file in Python
Using Operating System Commands in Python Use the Linux/Mac tail command to provide the data: Creating a Python Only Script Read the whole file into… Read More »Read the bottom n lines of a file in Python
How to make a Python script Pip-installable
As Python developers, we’ve all used pip to install applications, but speaking to other Python developers, it’s not always clear how to make your own… Read More »How to make a Python script Pip-installable
How to send emails using Python and AWS SES SMTP
Sending emails using Python and AWS’ SES service is really easy. They provide an SMTP server that you can authenticate against and send email programmatically… Read More »How to send emails using Python and AWS SES SMTP
Read the top n lines of a file in Python
Sometimes you may need to read the top n lines of a file using Python. We start by opening the file for reading and then… Read More »Read the top n lines of a file in Python
How Fast is your Website?
I operate a bunch of different sites and have done for many years now. Some of them get quite a lot of traffic and require… Read More »How Fast is your Website?
- « Previous
- 1
- 2
- 3
- 4
- Next »