How to Parse HTML/CSS Colors in Java
The challenge
In this challenge, you parse RGB colors represented by strings. The formats are primarily used in HTML and CSS. Your task is to …
Read Article →Technical Articles
In-depth guides, insights, and best practices for modern software engineering
Solving Simple Transposition in Java
The challenge
Simple transposition is a basic and simple cryptography technique. We make 2 rows and put first a letter in Row 1, the second in Row 2, …
Read Article →How to Binary to Text (ASCII) Conversion in Python
The challenge
Write a function that takes in a binary string and returns the equivalent decoded text (the text is ASCII encoded).
Each 8 bits on the …
Read Article →How to Find the Row of the Odd Triangle in Python
The challenge
Given a triangle of consecutive odd numbers:
1
3 5
7 9 11
13 15 17 19
21 23 …Solving Number Zoo Patrol in Python
The challenge
Write a function that takes a shuffled list of unique numbers from 1 to n with one element missing (which can be any number including n …
Common AWS CDK CLI Commands
The AWS Cloud Development Kit (CDK) comes with numerous CLI commands.
| Command | Function … |
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How to Create an S3 bucket with PublicRead in CloudFormation
AWSTemplateFormatVersion: 2010-09-09
Description: Basic S3 Bucket CloudFormation template
Resources:
S3BucketForWebsiteContent:
Type: …How to Create a VPC in CloudFormation
It’s very easy to deploy a VPC using CloudFormation:
AWSTemplateFormatVersion: 2010-09-09
Description: Deploy a VPC
Resources:
VPC:
Type: …How to Setup Git on EC2 for AWS CodeCommit
Connect to the instance:
chmod 400 KEYPAIR.pem
ssh -i KEYPAIR.pem ec2-user@EC2PublicIP
Install Git:
sudo yum install -y git
Setup Git Credential …
Read Article →The Difference of 2 in Java
The challenge
The objective is to return all pairs of integers from a given array of integers that have a difference of 2.
The resulting array should …
Read Article →How to Make the Deadfish Swim in Java
The challenge
Write a simple parser that will parse and run Deadfish.
Deadfish has 4 commands, each 1 character long:
iincrements the value …
How to Write Number in Expanded Form in Java
The challenge
You will be given a number and you will need to return it as a string in Expanded Form.
Examples:
Challenge.expandedForm(12); // Should …