How to Convert Integer to Whitespace format in Python
The challenge
Hereinafter, [space] refers to " ", [tab] refers to "\t", and [LF] refers to "\n" for illustrative …
Technical Articles
In-depth guides, insights, and best practices for modern software engineering
How to Perform Frog Jumping in Python
The challenge
You have an array of integers and have a frog at the first position
[Frog, int, int, int, ..., int]
The integer itself may tell you the …
Read Article →How to Calculate the area of a regular N sides polygon inside a circle of radius R in Python
The challenge
Write the following function:
def area_of_polygon_inside_circle(circle_radius, number_of_sides):
It should calculate the area of a …
Read Article →How to create an Image Host Filename Generator in Python
The challenge
You are developing an image hosting website.
You have to create a function for generating random and unique image filenames.
Create a …
Read Article →How to Find the Missing Alphabets in Python
The challenge
Task
Given string s, which contains only letters from a to z in lowercase.
A set of the alphabet is given by abcdefghijklmnopqrstuvwxyz. …
How to move MySQL database to another drive
Step 1:
Login to your MySQL server, enter your password when prompted:
mysql -u root -p
Find out where the data directory is located:
mysql> select …How to Find the Sum of Prime-Indexed Elements in Go
The challenge
You will be given an integer array and your task is to return the sum of elements occupying prime-numbered indices.
The first element of …
Read Article →How to Find the Longest Substring in Alphabetical Order in Python
The challenge
Find the longest substring in alphabetical order.
Example:
the longest alphabetical substring in "asdfaaaabbbbcttavvfffffdf" …
Calculate the Most Frequent Weekdays in Go
The challenge
What is your favourite day of the week? Check if it’s the most frequent day of the week in the year.
You are given a year as …
Read Article →Return Index of Matching Closing Bracket in Go
The challenge
In this challenge, you will be given a string with brackets and an index of an opening bracket and your task will be to return the index …
Read Article →How to Presign an S3 URL in AWS using AWS CLI
You can use the AWS CLI to presign URLs so that objects in S3 can be shared publicly even if they are set as private.
Presigned URLs are great for …
Read Article →How to Download using Aria2c with Multiple Connections
If you use aria2c to download files using the command-line, then you can also use it to download using multiple connections.
aria2c -x16 -s16 …